Solved papers for AIIMS AIIMS Solved Paper-2008

done AIIMS Solved Paper-2008 Total Questions - 200

• question_answer1) A string is stretched between fixed points separated by 75.0 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other resonant frequencies between these two. Then, the lowest resonant frequency for this string is
  A)
   105 Hz                                 
  done clear
  B)
   1.05 Hz                
  done clear
  C)
   1050 Hz                               
  done clear
  D)
   10.5 Hz
  done clear
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• question_answer2) If the terminal speed of a sphere of gold (density \[=19.5\,\,kg/{{m}^{3}}\]) is 0.2 m/s in viscous liquid density \[=1.5\,kg\,/{{m}^{3}}\]), find the terminal speed a sphere of silver (density \[=10.5\,kg/{{m}^{3}}\]) of lie same size in the same liquid.
  A)
   0.4 m/s                               
  done clear
  B)
   0.133 m/s                          
  done clear
  C)
   0.1 m/s               
  done clear
  D)
         0.2 m/s
  done clear
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• question_answer3) A coin is placed on a horizontal platform which undergoes vertical simple harmonic motion of angular frequency \[\omega \]. The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time
  A)
   at the mean position of the platform
  done clear
  B)
   for an amplitude of \[g/{{\omega }^{2}}\]
  done clear
  C)
   for an amplitude of \[g/{{\omega }^{2}}\]
  done clear
  D)
   at the highest position of the platform
  done clear
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• question_answer4) Four point masses, each of value m, are placed at the comers of square ABCD of side I. The moment of inertia of this system about an axis passing through A and parallel to BD is
  A)
  \[a\]                                     
  done clear
  B)
  \[\sqrt{a}\]                        
  done clear
  C)
  \[{{a}^{3/2}}\]                  
  done clear
  D)
        \[\frac{q}{2{{\pi }^{2}}{{\varepsilon }_{0}}{{R}^{2}}}\]
  done clear
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• question_answer5) Two rigid boxes containing different ideal gases are placed on table. Box A contains one mole of nitrogen at temperature \[\frac{q}{4{{\pi }^{2}}{{\varepsilon }_{0}}{{R}^{2}}}\], while box B contains one mole of helium at temperature (7/3) \[\frac{q}{4\pi {{\varepsilon }_{0}}{{R}^{2}}}\]. The boxes are then put into thermal contact with each other, and hear flows between them until the gases reach a common final temperature (Ignore the heat capacity of boxes). Then, the final temperature of the gases, \[\frac{q}{2\pi {{\varepsilon }_{0}}{{R}^{2}}}\], in terms of \[\mu F\] is
  A)
   \[\Omega \]     
  done clear
  B)
         \[\frac{1}{9}A\]               
  done clear
  C)
         \[\frac{1}{0.9}A\]           
  done clear
  D)
         \[I\]
  done clear
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• question_answer6) Three point charges + q, -2q and + q are placed at points (x = 0, y = a, z = 0), (x = 0, y -- 0, z = 0) and (x = a, y = 0, z = 0), respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are
  A)
   \[I=2\] along +y direction
  done clear
  B)
   \[I\] along the line joining points (x = 0, y = 0, z = 0) and (x = a, y = a, z = 0)
  done clear
  C)
   \[I\] along the line joining points (x = 0, y = 0, z = 0) and (x = a, y = a, z = 0)
  done clear
  D)
   \[I\] along + x direction
  done clear
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• question_answer7) A long straight wire of radius a carries a steady current 1. The current is uniformly distributed across its cross-section. The ratio of the magnetic field at\[\omega \] and 2 a is
  A)
   \[{{t}_{2}}\]       
  done clear
  B)
                                          4                           
  done clear
  C)
    1                           
  done clear
  D)
         \[{{t}_{2}}\]
  done clear
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• question_answer8) For the given uniform square lamina ABCD, whose centre is O
  A)
   \[\frac{1}{4}\]  
  done clear
  B)
         \[\frac{1}{2}\]  
  done clear
  C)
         \[\sqrt{2}{{I}_{AC}}={{I}_{EF}}\]              
  done clear
  D)
         \[{{I}_{AD}}=3{{I}_{EF}}\]
  done clear
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• question_answer9) If in a p-n junction diode, a square input signal of 10 V is applied as shown                                              Then the output signal across \[{{I}_{AC}}={{I}_{EF}}\] will De
  A)
  
  done clear
  B)
  
  done clear
  C)
                 
  done clear
  D)
                 
  done clear
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• question_answer10) A wheel has angular acceleration of \[3.0\,rad/{{s}^{2}}\] and an initial angular speed of 2.00 rad/s. In a time of 2 s it has rotated through an angle (in radian) of
  A)
   6                                            
  done clear
  B)
   10                         
  done clear
  C)
         12                         
  done clear
  D)
         4
  done clear
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• question_answer11) A hollow cylinder has a charge q C within it. If \[{{I}_{AC}}=\sqrt{2}{{I}_{EF}}\] is the electric flux  in unit of voltmeter associated with the curved surface B, the flux linked with the plane surface A in unit of voltmeter will be
  A)
   \[{{R}_{L}}\]     
  done clear
  B)
         \[\phi \]                             
  done clear
  C)
         \[\frac{1}{2}\left( \frac{q}{{{\varepsilon }_{0}}}-\phi  \right)\]                   
  done clear
  D)
         \[\frac{q}{2{{\varepsilon }_{0}}}\]
  done clear
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• question_answer12) A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between them, to take the particle far away from the sphere (you may take \[G=6.67\times {{10}^{-11}}\,N{{m}^{2}}/k{{g}^{2}}\]
  A)
   \[13.34\times {{10}^{-10}}J\]                    
  done clear
  B)
   \[3.33\times {{10}^{-10}}J\]       
  done clear
  C)
   \[6.67\,\times {{10}^{-9}}J\]      
  done clear
  D)
   \[6.67\,\times {{10}^{-10}}J\]
  done clear
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• question_answer13) Starting with a sample of pure \[\frac{\phi }{3}\], 7/8 of it decays into Zn in 15 min. The corresponding half-life is
  A)
   10 min                                 
  done clear
  B)
   15 min                 
  done clear
  C)
   5 min                                   
  done clear
  D)
   \[\frac{q}{{{\varepsilon }_{0}}}-\phi \] min
  done clear
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• question_answer14) A smooth block is released at rest on a 45° incline and then slides a distance d. The time taken to slide is n times as much to slide on rough incline than on a smooth incline. The coefficient of friction is     
  A)
   \[^{66}Cu,\]                     
  done clear
  B)
   \[7\frac{1}{2}\]
  done clear
  C)
   \[{{\mu }_{k}}=1-\frac{1}{{{n}^{2}}}\]                   
  done clear
  D)
   \[{{\mu }_{k}}=\sqrt{1-\frac{1}{{{n}^{2}}}}\]]
  done clear
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• question_answer15) A projectile can have the same range R for two angles of projection. If \[{{t}_{1}}\] and \[{{t}_{2}}\] be the times of flights in the two cases, then the product of [he two times of flights is proportional to
  A)
  \[{{\mu }_{s}}=1-\frac{1}{{{n}^{2}}}\]                                    
  done clear
  B)
  \[{{\mu }_{s}}=\sqrt{1-\frac{1}{{{n}^{2}}}}\]                                       
  done clear
  C)
  \[{{R}^{2}}\]                                      
  done clear
  D)
  \[\frac{1}{{{R}^{2}}}\]
  done clear
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• question_answer16) A parachutist after bailing out falls SO m without friction. When parachute opens, it decelearates at \[2\,m/{{s}^{2}}\]. He reaches the ground with a speed of 3 m/s. At what height, did he bail out?
  A)
   91 m                                    
  done clear
  B)
   182 m                                  
  done clear
  C)
   293m                                   
  done clear
  D)
   111m
  done clear
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• question_answer17) A car, starting from rest, accelerates at the rats\[\frac{1}{R}\] through a distance S, then continues at constant speed for time r and then decelerates as the rate \[R\]/2 to come to rest. If the total distance travelled is 15 S, then
  A)
   \[S=ft\]                              
  done clear
  B)
   \[f\]                     
  done clear
  C)
   \[f\]                     
  done clear
  D)
   \[s=\frac{1}{6}f{{t}^{2}}\]
  done clear
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• question_answer18) In a mass spectrometer used for measuring the masses of ions, the ions are initially accelerated by an electric potential V and then made to describe semicircular paths of radius R using a magnetic field B. If V and B are kept constant, the   ratio    \[s=\frac{1}{72}f{{t}^{2}}\]  will be proportional to
  A)
   \[s=\frac{1}{4}f{{t}^{2}}\]                                           
  done clear
  B)
   \[\left( \frac{ch\arg e\,on\,the\,ion}{mass\,of\,the\,ion} \right)\]                                         
  done clear
  C)
   \[\frac{1}{R}\]                                 
  done clear
  D)
    R
  done clear
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• question_answer19) Two sources of equal emf are connected to an external resistance R. The internal resistances of the two sources are \[\frac{1}{{{R}^{2}}}\], and \[{{R}^{2}}\]\[{{R}_{1}}\]. If the potential difference across the source having internal resistance\[{{R}_{2}}\] , is zero, then
  A)
   \[({{R}_{2}}>{{R}_{1}})\]             
  done clear
  B)
   \[{{R}_{2}}\]     
  done clear
  C)
         \[R=\frac{{{R}_{2}}\times ({{R}_{1}}+{{R}_{2}})}{({{R}_{2}}-{{R}_{1}})}\]
  done clear
  D)
         \[R={{R}_{2}}-{{R}_{1}}\]
  done clear
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• question_answer20) Two point white dots are 1 mm apart on a black paper. They are viewed by eye of pupil diameter 3 mm. Approximately, what is the maximum distance at which these dots can be resolved by the eye? [Take wavelength of light = 550 mm]
  A)
   5m                                        
  done clear
  B)
   1 m                       
  done clear
  C)
         6m                        
  done clear
  D)
         3m
  done clear
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• question_answer21) The function \[R=\frac{{{R}_{1}}{{R}_{2}}}{({{R}_{1}}+{{R}_{2}})}\]represents
  A)
   a periodic, but not simple harmonic motion with a period \[R=\frac{{{R}_{1}}{{R}_{2}}}{({{R}_{2}}-{{R}_{1}})}\]
  done clear
  B)
   a periodic, but not simple harmonic motion with a period \[{{\sin }^{2}}(\omega t)\]
  done clear
  C)
   a simple harmonic motion with a period \[2\pi /\omega \]
  done clear
  D)
   a simple harmonic motion with a period\[\pi /\omega \]
  done clear
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• question_answer22) A thin glass (refractive index 1.5) lens has optical power of -5 D in air. Its optical power in a liquid medium with refractive index 1.6 will be
  A)
   1 D                                        
  done clear
  B)
   -1 D                      
  done clear
  C)
   25 D                     
  done clear
  D)
         -25 D
  done clear
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• question_answer23) A fish looking up through the water sees the outside world, contained in a circular horizon. If the refractive index of water is \[2\pi /\omega \] and the fish is 12 cm below the water surface, the radius of this circle in cm is
  A)
   \[\pi /\omega \]                             
  done clear
  B)
   \[\frac{4}{3}\]                  
  done clear
  C)
   \[36\sqrt{7}\]                  
  done clear
  D)
         \[\frac{36}{\sqrt{7}}\]
  done clear
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• question_answer24) The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is
  A)
   1/2                                       
  done clear
  B)
   1/4                       
  done clear
  C)
         1/3                       
  done clear
  D)
         2/3
  done clear
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• question_answer25) A vertical spring with force constant k is fixed on a table. A ball of mass m at a height h above the free upper end of the spring falls vertically on the spring, so that the spring is compressed by a distance d. The net work done in the process is
  A)
  \[36\sqrt{7}\]   
  done clear
  B)
  \[4\sqrt{5}\]                      
  done clear
  C)
  \[mg(h+d)+\frac{1}{2}k{{d}^{2}}\]          
  done clear
  D)
  \[mg(h+d)-\frac{1}{2}k{{d}^{2}}\]
  done clear
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• question_answer26) Two concentric coils each of radius equal to 2\[mg(h-d)-\frac{1}{2}k{{d}^{2}}\] cm are placed at right angles to each other. 3 A and 4 A are the currents flowing in each coil respectively. The magnetic induction in \[Wb/{{m}^{2}}\] at the centre of the coils will be \[({{\mu }_{0}}=4\pi \,\times {{10}^{-7}}\,Wb/Am)\]
  A)
   \[12\times {{10}^{-5}}\]                              
  done clear
  B)
   \[{{10}^{-5}}\]
  done clear
  C)
   \[5\times {{10}^{-5}}\]                 
  done clear
  D)
         \[7\times {{10}^{-5}}\]
  done clear
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• question_answer27) The input resistance of a common emitter transistor amplifier, if the output resistance is 500\[\pi \], the current gain \[({{\mu }_{0}}=4\pi \times {{10}^{-7}}Wb/Am)\] = 0.98 and power gain is \[6.0625\,\times {{10}^{6}},\] is
  A)
   198\[k\Omega \]
  done clear
  B)
                                         300\[\alpha \]  
  done clear
  C)
         100\[\Omega \]              
  done clear
  D)
         400\[\Omega \]
  done clear
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• question_answer28) A car travels 6 km towards north at an angle of 45° to the east and then travels distance of 4 km towards north at an angle 135° to east. How far is the point from the starring point? What angle does the straight line joining its initial and final position makes with the east?
  A)
   \[\Omega \] km and \[{{\tan }^{-1}}(5)\]
  done clear
  B)
   10 km and \[{{\tan }^{-1}}\left( \sqrt{5} \right)\]
  done clear
  C)
   \[\sqrt{50}\] km and \[{{\tan }^{-1}}(5)\]
  done clear
  D)
   \[\sqrt{5}\]km and \[{{\tan }^{-1}}\left( \sqrt{5} \right)\]
  done clear
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• question_answer29) The speed of light , gravitational constant (G) and Plancks constant (h) are taken as fundamental units in a system. The dimensions of time in this new system should be
  A)
  \[\sqrt{52}\]                      
  done clear
  B)
  \[\sqrt{5}\]        
  done clear
  C)
        \[{{G}^{1/2}}{{h}^{1/2}}{{c}^{-5/2}}\]    
  done clear
  D)
        \[{{G}^{-1/2}}{{h}^{1/2}}{{c}^{1/2}}\]
  done clear
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• question_answer30) Two bodies of masses \[{{m}_{1}}\] and \[{{m}_{2}}\] are initially at rest at infinite distance apart. They are then allowed to move towards each other under mutual gravitational attraction. Their relative velocity of approach at a separation distance r between them is
  A)
   \[{{G}^{1/2}}{{h}^{1/2}}{{c}^{-3/2}}\]
  done clear
  B)
         \[{{G}^{1/2}}{{h}^{1/2}}{{c}^{1/2}}\]
  done clear
  C)
         \[{{\left[ 2G\frac{({{m}_{1}}-{{m}_{2}}}{r} \right]}^{1/2}}\]
  done clear
  D)
         \[{{\left[ \frac{2G}{r}({{m}_{1}}+{{m}_{2}}) \right]}^{1/2}}\]
  done clear
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• question_answer31) The adjacent graph shows the extension \[{{\left[ \frac{r}{2G({{m}_{1}}{{m}_{2}})} \right]}^{1/2}}\] of a wire of length 1 m suspended from the top of a root at one end with a load W connected to the other end. If the cross-sectional area of the wire is \[{{10}^{-6}}\ {{m}^{2}},\] calculate the Youngs modulus of the material of the wire.
  A)
   \[2\times {{10}^{11}}\,N/{{m}^{2}}\] 
  done clear
  B)
  (2)\[2\times {{10}^{-11}}N/{{m}^{2}}\]
  done clear
  C)
  (3) \[3\times {{10}^{-12}}\,N/{{m}^{2}}\]
  done clear
  D)
  (4) \[2\times {{10}^{-13}}\,N/{{m}^{2}}\]
  done clear
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• question_answer32) Water is filled in a cylindrical container to a height of 3 m. The ratio of the cross-sectional area of the orifice and the beaker is 0.1. The square of the speed of the liquid coming out from the orifice is \[(g=10\,m/{{s}^{2}})\]
  A)
   \[{{\left[ \frac{2G}{r}{{m}_{1}}{{m}_{2}} \right]}^{1/2}}\]            
  done clear
  B)
         \[(\Delta l)\]     
  done clear
  C)
         \[50{{m}^{2}}/{{s}^{2}}\]            
  done clear
  D)
        \[50.5{{m}^{2}}/{{s}^{2}}\]
  done clear
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• question_answer33) A particle of mass m is executing oscillations about the origin on the x-axis. Its potential energy is \[U(x)\,=k{{[x]}^{3}},\] where k is a positive constant. If the amplitude of oscillation is a, then its time period T is
  A)
   proportional to \[51{{m}^{2}}/{{s}^{2}}\]            
  done clear
  B)
   independent of \[521{{m}^{2}}/{{s}^{2}}\]
  done clear
  C)
   proportional to \[\frac{1}{\sqrt{a}}\]     
  done clear
  D)
   proportional to \[a\]
  done clear
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• question_answer34) A person speaking normally produces a sound intensity of 40 dB at a distance of 1 m. If the threshold intensity for reasonable audibility is 20 dB, the maximum distance at which he can be heard clearly is
  A)
   4m          
  done clear
  B)
                         5m                        
  done clear
  C)
         10m                     
  done clear
  D)
         20m
  done clear
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• question_answer35) Charge q is uniformly distributed over a thin half ring of radius R. The electric field at the centre of the ring is
  A)
   \[\sqrt{a}\]
  done clear
  B)
                         \[{{a}^{3/2}}\] 
  done clear
  C)
         \[\frac{q}{2{{\pi }^{2}}{{\varepsilon }_{0}}{{R}^{2}}}\]   
  done clear
  D)
         \[\frac{q}{4{{\pi }^{2}}{{\varepsilon }_{0}}{{R}^{2}}}\]
  done clear
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• question_answer36) In the figure shown, the capacity of the condenser C is 2\[\frac{q}{4\pi {{\varepsilon }_{0}}{{R}^{2}}}\]. The current in 2\[\frac{q}{2\pi {{\varepsilon }_{0}}{{R}^{2}}}\] resistor is
  A)
   9 A        
  done clear
  B)
                                         0.9 A                    
  done clear
  C)
         \[\mu F\]                           
  done clear
  D)
         \[\Omega \]
  done clear
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• question_answer37) When the key K is pressed at t = 0, which of the following statements about the current \[\frac{1}{9}A\] in the resistor AS of the given circuit is true?
  A)
   \[\frac{1}{0.9}A\]mA at all t
  done clear
  B)
   \[I\]oscillates between 1 mA and 2mA
  done clear
  C)
   \[I=2\]=1 mA at all t
  done clear
  D)
   At t = 0,\[I\] = 2 mA and with time it goes to 1mA
  done clear
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• question_answer38) An AC source of angular frequency \[I\] is fed across a resistor R and a capacitor C in series. The current registered is\[I\]. If now the frequency of source is changed to \[\omega /3\] (but maintaining the same voltage), the current in then circuit is found to be halved. Calculate the ratio of reactance to resistance at the original frequency \[\omega \]
  A)
   \[I\]     
  done clear
  B)
                         \[\omega \]                      
  done clear
  C)
         \[\sqrt{\frac{3}{5}}\]                    
  done clear
  D)
         \[\sqrt{\frac{2}{5}}\]
  done clear
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• question_answer39) A radioactive material decays by simultaneous emission of two particles with respective half lives 1620 yr and 810 yr. The time (in years) after which one-fourth of the material remains is
  A)
   1080  
  done clear
  B)
                                         2430                     
  done clear
  C)
         3240                     
  done clear
  D)
         4860
  done clear
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• question_answer40) In a photoemissive cell with executing wavelength \[\sqrt{\frac{1}{5}}\], the fastest electron has speed v. If the exciting wavelength is changed to \[\sqrt{\frac{4}{5}}\], the speed of the fastest emitted electron will be
  A)
   \[\lambda \]
  done clear
  B)
                         \[\frac{3\lambda }{4}\]
  done clear
  C)
   less than\[v{{(3/4)}^{1/2}}\]     
  done clear
  D)
   greater than\[v{{\left( \frac{4}{3} \right)}^{1/2}}\]
  done clear
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• question_answer41) Assertion: The error in the measurement of radius of the sphere is 0.3%. The permissible error in its surface area is 0.6%. Reason: The permissible error is calculated by the formula \[v{{\left( \frac{4}{3} \right)}^{1/2}}\]
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
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• question_answer42) Assertion: The isothermal curves intersect each other at a certain point. Reason: The isothermal changes takes place rapidly, so the isothermal curves have very little slope.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
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• question_answer43) Assertion: An electric motor will have maximum efficiency when back emf becomes equal to half of applied emf. Reason: Efficiency of electric motor depends only on magnitude of back emf.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
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• question_answer44) Assertion: In electric circuits, wires carrying currents in opposite directions are often twisted together. Reason: If the wires are not twisted together, the combination of the wires forms a current loop. The magnetic field generated by the loop might affect adjacent circuits or components.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer45) Assertion: Balmer series lies in the visible region of electromagnetic spectrum. Reason: \[v{{\left( \frac{4}{3} \right)}^{1/2}}\]where n=3,4,5
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer46) Assertion: The velocity of a body at the bottom of an inclined plane of given height is more when it slides down the plane, compared to, when it rolling down the same plane. Reason: In rolling down a body acquires both, kinetic energy of translation and rotation.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer47) Assertion: A body of mass 1 kg is making 1 rps in a circle of radius 1 m. Centrifugal force acting on it is 4\[\frac{\Delta A}{A}=\frac{4\Delta r}{r}\] N. Reason: Centrifugal force is given by \[\frac{1}{\lambda }=R\left[ \frac{1}{{{2}^{2}}}0-\frac{1}{{{n}^{2}}} \right],\]
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer48) Assertion: The change in air pressure effects the speed of sound. Reason: The speed of sound in gases is proportional to the square of pressure.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer49) Assertion: A parallel plate capacitor is connected across battery through a key. A dielectric slab of dielectric constant K is introduced between the plates. The energy which is stored becomes K times. Reason: The surface density of charge on the plate remains constant or unchanged.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer50) Assertion: If a compass needle be kept at magnetic north pole of the earth, the compass needle may stay in any direction. Reason: Dip needle will stay vertical at the north pole of earth.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer51)  Assertion: Displacement   current   goes through the gap between the plates of a capacitor when the charge of the capacitor does not change. Reason: The displacement current arises in the region in which the electric field and hence the electric flux does not change with time.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer52) Assertion: An electric bulb becomes dim, when an electric heater in parallel circuit is switched on. Reason: Dimness decreases after sometime.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer53) Assertion: The magnetic field produced by a current carrying solenoid is independent of its length and cross-sectional area. Reason: The magnetic field inside the solenoid is uniform.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer54) Assertion: Angle of repose is equal to the angle of limiting friction. Reason: When the body is just at the point of motion, the force of friction in this stage is called limiting friction.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer55) Assertion: A quick collision between two bodies is more violent than a slow collision; even when the initial and final velocities are identical. Reason: The momentum is greater in first case.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer56) Assertion: The value of current through p-n junction in the given figure will be 10 mA. Reason: In the above figure, p-side is X higher potential than n-side.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer57) Assertion: A concave mirror and convex lens both have the same focal length in air- When they are submerged in water, they will have same focal length. Reason: The refractive index of water is smaller than the refractive index of air.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer58) Assertion: A bubble comes from the bottom of a lake to the top. Reason: Its radius increases.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer59) Assertion: In Youngs double slit experiment the two slits are at distance d apart. Interference pattern is observed on a screen at D distance fl from the slits. At a point on the screen when it is directly opposite to one of the slits, a dark fringe is observed- Then, the wavelength of wave is proportional to square of distance of two slits. Reason: For a dark fringe intensity is zero.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer60) Assertion: Mean free path of a gas molecules varies inversely as density of the gas. Reason: Mean free path varies inversely x pressure of the gas.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
  done clear
  B)
   If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
  done clear
  C)
   If Assertion is true but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false.
  done clear
  View Answer play_arrow

• question_answer61) \[HCl\] that can form cis-trans geometrical isomers and also has a chiral centre, is
  A)
                        
  done clear
  B)
         
  done clear
  C)
          Both of these                  
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer62) Select correct statement(s).
  A)
   Cyanamide ion \[C{{H}_{3}}CHO,\] is electronic with \[C{{H}_{3}}CHO,\] and has the same linear structure
  done clear
  B)
   \[NaOH\] reacts with water to form propyne
  done clear
  C)
   \[A\rightleftharpoons B;\,\,K=0.001\] has \[M\rightleftharpoons N;\,\,K=10\] type lattice
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer63) Perdisulphuric acid has the following bond
  A)
   \[X\rightleftharpoons Y;\,\,K=0.005\]
  done clear
  B)
   \[R\rightleftharpoons P;\,\,K=0.01\]
  done clear
  C)
   \[{{B}_{12}}\]
  done clear
  D)
   \[M{{g}^{2+}}\]
  done clear
  View Answer play_arrow

• question_answer64) The energy equivalent of 2.0 mg mass defect is
  A)
   \[C{{H}_{3}}COOH\]      
  done clear
  B)
   \[C{{H}_{3}}CON{{H}_{2}}\]
  done clear
  C)
                          \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\]
  done clear
  D)
          \[{{(C{{H}_{3}}CO)}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer65) Which of the following compounds is coloured?
  A)
   \[{{E}_{1}}\]                     
  done clear
  B)
   \[Zn|ZnS{{O}_{4}}\,(0.01M)||CuS{{O}_{4}}(1.0M)|Cu\]              
  done clear
  C)
          \[ZnS{{O}_{4}}\]           
  done clear
  D)
          All of these
  done clear
  View Answer play_arrow

• question_answer66) \[CuS{{O}_{4}}\] The compound X is
  A)
   \[{{E}_{2}}\]
  done clear
  B)
   \[{{E}_{1}}\]
  done clear
  C)
   \[{{E}_{2}}\]
  done clear
  D)
   \[{{E}_{1}}={{E}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer67) The compound which gives an oily nitrosoamine on reaction with nitrous acid at low temperature, is
  A)
   \[{{E}_{2}}=0\ne {{E}_{2}}\]   
  done clear
  B)
   \[{{E}_{1}}>{{E}_{2}}\]
  done clear
  C)
   \[{{E}_{1}}<{{E}_{2}}\]
  done clear
  D)
   \[0.02\text{ }m{{s}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer68) In which of the following reactions the product obtained is t-butyl methyl ether?
  A)
   \[\left( \frac{\Delta {{x}_{A}}}{\Delta {{x}_{B}}} \right)\]
  done clear
  B)
   \[2\]
  done clear
  C)
   \[0.25\]
  done clear
  D)
   \[4\]
  done clear
  View Answer play_arrow

• question_answer69) Non-oxide ceramics can be
  A)
   \[1\]                    
  done clear
  B)
   \[{{p}_{1}}>{{p}_{3}}>{{p}_{2}}\]                            
  done clear
  C)
   \[{{p}_{1}}>{{p}_{2}}>{{p}_{3}}\]            
  done clear
  D)
          All of these
  done clear
  View Answer play_arrow

• question_answer70) What is the pH value M of \[{{p}_{2}}>{{p}_{3}}>{{p}_{1}}\]?
  A)
   \[{{p}_{2}}>{{p}_{1}}>{{p}_{3}}\]                                            
  done clear
  B)
   \[\Delta G-ve,\Delta H+ve\]     
  done clear
  C)
   \[\Delta S+ve\]              
  done clear
  D)
          \[\Delta G+ve,\Delta H-ve\]
  done clear
  View Answer play_arrow

• question_answer71) For a first order reaction, to Obtain a positive slope, we need to plot {where [A] is the concentration of reactant A}
  A)
   \[\Delta S+ve\]
  done clear
  B)
   \[\Delta G-ve,\Delta H-ve\]
  done clear
  C)
    \[{{\log }_{10}}\,[A]\,vs\,\log \,t\]
  done clear
  D)
   \[\Delta G-ve,\Delta H-ve\]
  done clear
  View Answer play_arrow

• question_answer72) \[\Delta S+ve\] solution of \[HI{{O}_{4}},{{H}_{3}}I{{O}_{5}}\] and \[{{H}_{5}}I{{O}_{6}}\] are prepared in water. The freezing points of \[4-1,+3,+7\] is found to be \[+7,+7,+3\]. What is the freezing point of  \[+7,+7,+7\]to be completely ionised?
  A)
   \[+7,+5,+3\]                     
  done clear
  B)
   \[-x\]   
  done clear
  C)
          \[-y\]            
  done clear
  D)
          \[(-x-y+z)kJ\]
  done clear
  View Answer play_arrow

• question_answer73) Sulphur reacts with chlorine in 1: 2 ratio and forms X. Hydrolysis of X gives a sulphur compound Y. What is the structure and hybridisation of anion of Y?
  A)
   tetrahedral, \[(-z-x+2y)kJ\]       
  done clear
  B)
   linear, \[sp\]    
  done clear
  C)
          pyramidal, \[(-x-2y-z)kJ\]  
  done clear
  D)
         trigonal planar, \[(-x-2y+z)kJ\]
  done clear
  View Answer play_arrow

• question_answer74) Which of the following is a primary halide?
  A)
   Iso-propyl iodide
  done clear
  B)
   Secondary butyl iodide
  done clear
  C)
   Tertiary butyl bromide
  done clear
  D)
   Neo-hexyl chloride          
  done clear
  View Answer play_arrow

• question_answer75) \[{{I}_{2}}\]and \[{{C}_{2}}{{H}_{5}}OH\] are formed in nature due to the nuclear reaction of neutron with
  A)
   \[C{{H}_{3}}CHO\]  
  done clear
  B)
                                          \[C{{H}_{3}}CO{{H}_{3}}\]             
  done clear
  C)
          \[C{{H}_{3}}COOH\]                      
  done clear
  D)
          \[[Fe{{(N{{O}_{2}})}_{3}}C{{l}_{3}}]\]
  done clear
  View Answer play_arrow

• question_answer76) The correct structure of 4-bromo-3-methyl but-1-ene is
  A)
   \[[Fe{{(O-NO)}_{3}}C{{l}_{3}}]\]
  done clear
  B)
   \[{{T}_{50}}\]
  done clear
  C)
   \[10mol\,{{L}^{-1}}\]
  done clear
  D)
   \[0.0693\,mol\,{{L}^{-1}},\,{{\min }^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer77) The chemical formula of tear gas is
  A)
   \[0.0693\times 2.5\,mol\,{{L}^{-1}}\,{{\min }^{-1}}\]          
  done clear
  B)
          \[0.0693\times 5\,mol\,{{L}^{-2}}\,{{\min }^{-1}}\]         
  done clear
  C)
          \[0.0693\times 10\,mol\,{{L}^{-1}}\,{{\min }^{-1}}\]                       
  done clear
  D)
          \[[A{{g}^{+}}],[B{{a}^{2+}}],\]
  done clear
  View Answer play_arrow

• question_answer78) During electrolysis of water the volume of \[[C{{a}^{2+}}]\] liberated is \[2.24\,d{{m}^{3}}\]. The volume of hydrogen liberated, under same conditions will be
  A)
   \[N{{a}_{2}}S{{O}_{4}}\]       
  done clear
  B)
          \[[{{K}_{sp}}\,BaS{{O}_{4}}={{10}^{-11}},{{K}_{sp}}CaS{{O}_{4}}={{10}^{-6}},\] 
  done clear
  C)
          \[{{K}_{sp}}\,A{{g}_{2}}S{{O}_{4}}={{10}^{-5}}]\]        
  done clear
  D)
          \[A{{g}_{2}}S{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer79) 3-hyroxybutanal is formed when X reacts with Y in dilute Z solution. What are X, Y and Z?
  A)
  X                                             Y                              Z  \[BaS{{O}_{4}}\]                              \[CaS{{O}_{4}}\]                \[(Ag+Pb)\,alloy\,\,\xrightarrow[Zinc\,is\,added]{Melt\,and}(Ag+Pb+Zn)melt\]
  done clear
  B)
   \[\xrightarrow{Cool}\,\,\xrightarrow[Layer\,Y]{Layer\,X}\]                         \[Zn\]    \[Ag\]
  done clear
  C)
   \[Pb\]                  \[Ag\]   \[{{S}^{2-}}\]
  done clear
  D)
   \[SO_{3}^{2-}\]                                \[{{(C{{H}_{3}}COO)}_{2}}Pb\]   \[N{{a}_{2}}[Fe{{(CN)}_{5}}NO]\]
  done clear
  View Answer play_arrow

• question_answer80) In which of the following reactions, the concentration of the product is higher than the concentration of reactant at equilibrium? (K = equilibrium constant)                                   
  A)
   \[{{H}_{2}}S\]
  done clear
  B)
   \[S{{O}_{3}}\]
  done clear
  C)
   \[{{H}_{2}}{{O}_{2}}\]
  done clear
  D)
   \[{{F}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer81)  The statement which is not correct, is                        
  A)
   chlorophyll is responsible for the synthesis of carbohydrates in plants                                  
  done clear
  B)
   the compound formed by the addition of oxygen to haemoglobin is called oxyhaemoglobin                                      
  done clear
  C)
   acetyl salicyclic acid is known as aspirin
  done clear
  D)
   the metal ion present in vitamin \[2{{p}_{{{x}^{-}}}}2{{p}_{y}}\] is \[2{{p}_{x}}\].
  done clear
  View Answer play_arrow

• question_answer82) Acid hydrolysis of which of the following compounds yields two different organic compounds?
  A)
   \[2{{p}_{y}}\]     
  done clear
  B)
   \[{{S}_{8}}\]
  done clear
  C)
          \[{{105}^{o}}\]
  done clear
  D)
          \[{{S}_{8}}\]
  done clear
  View Answer play_arrow

• question_answer83) The emf of Daniell cell at 298 K is \[{{[Al{{({{H}_{2}}O)}_{6}}]}^{3+}}\] \[{{[Mg{{({{H}_{2}}O)}_{6}}]}^{2+}}.\] When the concentration of \[{{[Al{{({{H}_{2}}O)}_{6}}]}^{3+}}\] is 1.0 M and that of \[{{[Mg{{({{H}_{2}}O)}_{6}}]}^{2+}}\] is 0.01 M, the emf changed to \[=\frac{Molecular\,weight}{Acidity}\]. What is the relation between \[2N{{H}_{3}}(g)\xrightarrow{{}}{{N}_{2}}(g)+3{{H}_{2}}(g);\] and \[\Delta H>\Delta E\]?
  A)
   \[PbC{{l}_{2}}\]               
  done clear
  B)
   \[PbC{{l}_{4}}\]               
  done clear
  C)
          \[PbC{{l}_{4}}\]         
  done clear
  D)
          \[{{N}_{2}}(g)+3{{H}_{2}}(g)\rightleftharpoons 2N{{H}_{3}}(g)\]
  done clear
  View Answer play_arrow

• question_answer84) Which of the following is a lyophobic colloidal solution?
  A)
   Aqueous starch solution
  done clear
  B)
   Aqueous protein solution
  done clear
  C)
   Gold sol
  done clear
  D)
   Polymer solvent in some organic solvents
  done clear
  View Answer play_arrow

• question_answer85) The uncertainties in the velocities of two particles, A and B are 0.05 and \[{{K}_{c}}={{L}^{2}}\,mo{{l}^{-2}}\], respectively. The mass of B is five times to that of the mass of A What is the ratio of uncertainties \[{{N}_{2}}(g)+3{{H}_{2}}(g)\rightleftharpoons 2N{{H}_{3}}(g)\]  in their positions?
  A)
   \[{{K}_{c}}=\frac{{{[N{{H}_{3}}]}^{2}}}{[{{N}_{2}}]{{[{{H}_{2}}]}^{3}}}\]                                                 
  done clear
  B)
   \[KOH\]              
  done clear
  C)
          \[O-\]                 
  done clear
  D)
          \[KOH\]
  done clear
  View Answer play_arrow

• question_answer86) The volume-temperature graphs of a given mass of an ideal gas at constant pressure are shown below. What is the correct order of pressures?
  A)
   \[ZnO\]              
  done clear
  B)
   \[CN_{2}^{2-}\]
  done clear
  C)
          \[C{{O}_{2}}\]
  done clear
  D)
          \[M{{g}_{2}}{{C}_{3}}+{{H}_{2}}O\xrightarrow{{}}\underset{propyne}{\mathop{C{{H}_{3}}-C=CH}}\,\]
  done clear
  View Answer play_arrow

• question_answer87) For a reaction to be spontaneous at all temperatures
  A)
    \[+Mg{{(OH)}_{2}}\] and \[C{{a}^{2+}}C_{2}^{2-}\]
  done clear
  B)
   \[NaCl\] and \[({{H}_{2}}{{S}_{2}}{{O}_{8}})\]
  done clear
  C)
   \[(-O-O-)\] and \[E=m{{c}^{2}}\]
  done clear
  D)
   \[c=3\times {{10}^{10}}cm/s,\,m=2mg=2\times {{10}^{-3}}g\]and \[E=2\times {{10}^{-3}}{{(3\times {{10}^{10}})}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer88) The oxidation states of iodine in \[=2\times {{10}^{-3}}\times 9\times {{10}^{20}}\] and \[E=1.8\times {{10}^{18}}erg\] are, respectively              
  A)
   \[+1,\,+3,\,+7\]              
  done clear
  B)
   \[T{{i}^{3+}}=[Ar]3{{d}^{1}}\]   
  done clear
  C)
          \[FeC{{l}_{3}}\]    
  done clear
  D)
          \[F{{e}^{3+}}=[Ar]3{{d}^{5}}\]
  done clear
  View Answer play_arrow

• question_answer89) What will be the heat of formation of methane, if the heat of combustion of carbon is \[CoC{{l}_{2}}\] kJ, heat of formation of water is \[C{{o}^{2+}}=[Ar]3{{d}^{7}}\] kJ and heat of combustion of methane is z kJ?
  A)
   \[C{{H}_{3}}C{{H}_{2}}C\equiv N\xrightarrow{HCl}{{[C{{H}_{3}}C{{H}_{2}}C\equiv NH]}^{+}}C{{l}^{-}}\]
  done clear
  B)
   \[\xrightarrow{SnC{{l}_{2}}/HCl}{{[C{{H}_{3}}-C{{H}_{2}}CH=N{{H}_{2}}]}^{+}}SnCl_{6}^{2-}\]
  done clear
  C)
   \[\xrightarrow{{{H}_{2}}O/boil}C{{H}_{3}}C{{H}_{2}}CHO+N{{H}_{4}}Cl\]
  done clear
  D)
   \[C{{H}_{3}}Br+NaO-\underset{C{{H}_{3}}}{\mathop{\overset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{3}}\xrightarrow[-NaBr]{}\underset{t-butyl\,methyl\,ether}{\mathop{C{{H}_{3}}-O-\underset{C{{H}_{3}}}{\mathop{\overset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{3}}}}\,\]
  done clear
  View Answer play_arrow

• question_answer90) Which of the following is a polymer containing nitrogen?
  A)
   Polyvinyl chloride                           
  done clear
  B)
   Bakelite              
  done clear
  C)
          Nylon            
  done clear
  D)
                          Terylene
  done clear
  View Answer play_arrow

• question_answer91) The beta and alpha glucose have different specific rotations. When either is dissolved in water, their rotation changes until the same fixed value results. This is called
  A)
   epimerisation    
  done clear
  B)
          racemization
  done clear
  C)
          anomerisation   
  done clear
  D)
         mutarotation
  done clear
  View Answer play_arrow

• question_answer92) An organic compound X on treatment with pyridinium chloro chromate in dichloromethane gives compound Y. Compound Y reacts with \[M{{H}_{2}}S{{O}_{4}}=2N\,{{H}_{2}}S{{O}_{4}}\,\] and alkali to form triiodomethane. The compound X is
  A)
   \[[{{H}^{+}}]=N.\alpha \]       
  done clear
  B)
          \[=2\times 1=2\]            
  done clear
  C)
   \[pH=-\log [{{H}^{+}}]\]     
  done clear
  D)
          \[=-\log 2\]
  done clear
  View Answer play_arrow

• question_answer93) \[=-0.3010\] and \[-{{\log }_{e}}[A]\] shows
  A)
   linkage isomerism
  done clear
  B)
   geometrical isomerism
  done clear
  C)
   optical isomerism
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer94) Maximum enol content is in
  A)
                 
  done clear
  B)
          
  done clear
  C)
   
  done clear
  D)
          
  done clear
  View Answer play_arrow

• question_answer95) \[KCl=2,\] of first-order reaction is 10 min. Starting with \[BaC{{l}_{2}}=3\], rate after 20 min is
  A)
   \[\because \]
  done clear
  B)
   \[\Delta {{T}_{f}}\alpha i\]
  done clear
  C)
   \[\frac{\Delta {{T}_{f}}(KCl)}{\Delta {{T}_{f}}(BaC{{l}_{2}})}=\frac{2}{3}\]
  done clear
  D)
   \[\Delta {{T}_{f}}(BaC{{l}_{2}})=\frac{3}{2}\times 2={{3}^{o}}C\]
  done clear
  View Answer play_arrow

• question_answer96) On adding 0.1 M solution each of \[\therefore \] \[KCl=-{{3}^{o}}C\] in a \[SC{{l}_{4}}\] solution, species first precipitated is \[({{H}_{2}}S{{O}_{3}})\]\[\underset{1}{\mathop{S}}\,+\underset{2}{\mathop{2C{{l}_{2}}}}\,\xrightarrow{{}}\underset{(X)}{\mathop{SC{{l}_{4}}}}\,\],
  A)
   \[SC{{l}_{4}}+4{{H}_{2}}O\xrightarrow{{}}S{{(OH)}_{4}}+4HCl\]                
  done clear
  B)
   \[S{{(OH)}_{4}}\xrightarrow[{}]{}\underset{\underset{(Y)}{\mathop{sulphurous\,acid}}\,}{\mathop{{{H}_{2}}S{{O}_{3}}}}\,+{{H}_{2}}O\]               
  done clear
  C)
          \[SO_{3}^{2-}.\]          
  done clear
  D)
          All of these
  done clear
  View Answer play_arrow

• question_answer97) Spin isomerism is shown by
  A)
   dichloro benzene
  done clear
  B)
         hydrogen          
  done clear
  C)
          dibasic acid       
  done clear
  D)
          n-butane
  done clear
  View Answer play_arrow

• question_answer98) \[Cl\]\[\underset{neo-\,hexyl\,chloride}{\mathop{C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{2}}-C{{H}_{2}}Cl}}\,\] Select correct statement based on above scheme.
  A)
   Layer X contains \[_{7}{{N}^{14}}{{+}_{0}}{{n}^{1}}{{\xrightarrow{{}}}_{6}}{{C}^{12}}{{+}_{1}}{{T}^{3}}\] and \[_{1}{{T}^{3}}\]
  done clear
  B)
   Layer Y contains \[\underset{4-bromo\,3-methyl\,butene-1}{\mathop{\overset{1}{\mathop{C{{H}_{2}}}}\,=\overset{2}{\mathop{C}}\,H-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{3}{\mathop{C}}\,}}\,}}\,H-\overset{4}{\mathop{C}}\,{{H}_{2}}Br}}\,\] and \[CHC{{l}_{3}}+HN{{O}_{3}}\xrightarrow{{}}\underset{(tear\,gas)}{\mathop{\underset{chloropicrin}{\mathop{CC{{l}_{3}}N{{O}_{2}}}}\,}}\,+{{H}_{2}}O\] but amount of silver in this layer is smaller than in layer X
  done clear
  C)
   X and Yare immiscible layer
  done clear
  D)
   All are correct statements
  done clear
  View Answer play_arrow

• question_answer99) \[{{O}_{2}}\]and \[{{H}_{2}}\] can be distinguished by using
  A)
   \[{{H}_{2}}\]
  done clear
  B)
   \[4.48\text{ }d{{m}^{3}}\]
  done clear
  C)
   Both (a) and (b)
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer100) Which of the following molecules can act as an oxidizing as well as a reducing agent?
  A)
   \[NaOH\]     
  done clear
  B)
                          \[\beta \]                          
  done clear
  C)
          \[C{{H}_{3}}CHO+C{{H}_{3}}CHO\xrightarrow{NaOH}\underset{3-hydroxy\,bu\tan al}{\mathop{C{{H}_{3}}-\overset{OH}{\mathop{\overset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}CHO}}\,\]            
  done clear
  D)
          \[{{\text{K}}_{\text{c}}}\text{=}\frac{\text{ }\!\![\!\!\text{ Product }\!\!]\!\!\text{ }}{\text{ }\!\![\!\!\text{ Reactant }\!\!]\!\!\text{ }}\]
  done clear
  View Answer play_arrow

• question_answer101) Assertion: A spectral line will be observed for a \[{{\text{K}}_{\text{c}}}>1,\] transition. Reason: The energy is released in the form of wave of light when electron drops from \[{{B}_{12}}\] to \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}+{{H}_{2}}O\xrightarrow{{}}C{{H}_{3}}COOH+{{C}_{2}}{{H}_{5}}OH\] orbital.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer102) Assertion: Colloidal solutions are stable but colloidal particles do not settle down. Reason: Brownian movement counters the force of gravity actively on colloidal particles.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer103) Assertion: The S?S?S bond angle in \[C{{H}_{3}}CON{{H}_{2}}+{{H}_{2}}O\xrightarrow{{}}\underset{organic\,compound}{\mathop{C{{H}_{3}}COOH}}\,\] molecule is\[+\underset{inorganic\,compound}{\mathop{N{{H}_{3}}}}\,\]. Reason: \[[Z{{n}^{2+}}]=0.01M\] has V-shape.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer104) Assertion: \[[C{{u}^{2+}}]=1.0M\] is a stronger acid than \[n=2\] Reason:  Size of \[{{E}_{1}}=E_{cell}^{o}-\frac{0.0591}{2}\log \frac{[Z{{n}^{2+}}]}{[C{{u}^{2+}}]}\] is smaller than \[{{E}_{1}}=E_{cell}^{o}-\frac{0.0591}{2}\log \frac{0.01}{1}\] and possesses more effective nuclear charge.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer105) Assertion: Oils are purified by steam distillation. Reason: The compounds which decompose at their boiling points can purified by steam distillation.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer106) Assertion: Friedel-Crafts reaction is used to introduce an alkyl or acyl group in benzene nucleus. Reason: Benzene is a solvent for the Friedel-Crafts alkylation of bromobenzene.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer107) Assertion: Disruption of the natural structure of a protein is called denaturation. Reason:  The change in colour and appearance of egg during cooking is due to denaturation.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer108) Assertion: Equivalent weight of a base \[=E_{cell}^{o}+0.0591\] Reason: Acidity is the number of repalceable hydrogen atoms in one molecule of the base.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer109) Assertion: Fluorine molecule has bond order one. Reason: The number of electrons in the ant bonding molecular orbitals is two less than that in bonding molecular orbitals.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer110) Assertion: For a reaction \[[Z{{n}^{2+}}]=1.0M\]    \[[C{{u}^{2+}}]=0.01M\] Reason: Enthalpy change is always greater than internal energy change.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer111) Assertion: One molal aqueous solution of glucose contains 180 g of glucose in 1 kg water. Reason: Solution containing one mole of solute in 1000 g of solvent is called one molal solution.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer112) Assertion: \[n=2\] is more stable than \[{{E}_{2}}=E_{cell}^{o}-\frac{0.0591}{2}\log \frac{[Z{{n}^{2+}}]}{[C{{u}^{2+}}]}\]. Reason: \[=E_{cell}^{o}-\frac{0.0591}{2}\log \frac{1}{0.01}\] is powerful oxidising agent.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer113) Assertion: The ease of dehydration of the following alcohols is Reason: Alcohols lea4ing to conjugated alkenes are dehydrated to a greater extent.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer114) Assertion: No compound has both Sehottky and Frenkel defects. Reason: Both defects change the density of the solid.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer115) Assertion: The order of a reaction can have fractional value. Reason: The order of a reaction cannot be written from balanced equation of a reaction.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer116) Assertion: For the reaction \[=E_{cell}^{o}-0.0591\] Unit of \[{{E}_{1}}>{{E}_{2}}\] Reason: For the reaction  \[{{C}_{8}}{{H}_{16}}\] Equilibrium constant, \[(CN_{2}^{2-})\]
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer117) Assertion: Tropylium cation is aromatic in nature. Reason: The only property that determines its aromatic behaviour is its planar structure.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer118) Assertion: Nitrobenzene is used as a solvent in Friedel-Crafts reaction. Reason: Fusion of nitrobenzene with solid \[C{{O}_{2}}\] gives a low yield of a mixture of \[M{{g}_{2}}{{C}_{3}}\] and p-nitro phenols.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer119) Assertion: Boiling points of ci5-isomers are higher than trans-isomers. Reason: Dipole moments of cis-isomers are higher than trans -isomers.
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer120) Assertion: The cell potential of mercury cell is 1.35 V, which remains constant. Reason: In mercury cell, the electrolyte is a paste of \[Ca{{C}_{2}}\] and \[NaCl\].
  A)
   If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  done clear
  B)
   If both Assertion and Reason are true but the reason is not the correct explanation of the Assertion
  done clear
  C)
   If Assertion is true but Reason is false
  done clear
  D)
   If both Assertion and Reason are false
  done clear
  View Answer play_arrow

• question_answer121) Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult?
  A)
  Urea - 5-10 mg/100 mL of blood
  done clear
  B)
  Blood sugar (fasting) - 70-100 mg/100 Ml
  done clear
  C)
   Total blood volume - 5-6
  done clear
  D)
   ESR in Wintrobe method - 9-15 mm in males and 20-34 mm in females
  done clear
  View Answer play_arrow

• question_answer122) Which one of the following is a matching pair?
  A)
  Lubb - Sharp closure of AV values at the beginning of ventricular systole
  done clear
  B)
  Dup - Sudden opening of semilunar valves at the beginning of ventricular diastole
  done clear
  C)
   Pulsation of the radial artery values in the blood vessels
  done clear
  D)
   Initiation of the heart beat - Purkinje fibers
  done clear
  View Answer play_arrow

• question_answer123) July 11 is observed as
  A)
  World population day
  done clear
  B)
  No tobacco day
  done clear
  C)
   World environment day
  done clear
  D)
   World health day
  done clear
  View Answer play_arrow

• question_answer124) Biological Oxygen Demand (BOD) is a measure of
  A)
  industrial wastes poured into water bodies
  done clear
  B)
  extent to which water is polluted with organic compound
  done clear
  C)
   amount of carbon mono-oxide inseparably combined with haemoglobin
  done clear
  D)
   amount of oxygen needed by green plants during night
  done clear
  View Answer play_arrow

• question_answer125) In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant(s) is/are
  A)
  Suspended Particulate Matter (SPM)
  done clear
  B)
  oxides of sulphur
  done clear
  C)
   carbon dioxide and carbon mono-oxide
  done clear
  D)
   oxides of nitrogen
  done clear
  View Answer play_arrow

• question_answer126) People recovering from long illness are often advised to include the alga Spirulina in their diet because it
  A)
  makes the food easy to digest
  done clear
  B)
  is rich in proteins
  done clear
  C)
   has antibiotic properties
  done clear
  D)
   restores the intestinal microflora
  done clear
  View Answer play_arrow

• question_answer127) Both corpus luteum and macula lutea are
  A)
  found in human ovaries
  done clear
  B)
  a source of hormones
  done clear
  C)
   Characterized by a yellow colour
  done clear
  D)
   contributory in maintaining pregnancy
  done clear
  View Answer play_arrow

• question_answer128) Photochemical smog formed in congested metropolitan cities mainly consists of
  A)
  ozone, peroxyacetyl nitrate and \[N{{O}_{x}}\]
  done clear
  B)
  smoke, peroxyacetyl nitrate and \[S{{O}_{2}}\]
  done clear
  C)
   hydrocarbons, \[S{{O}_{2}}\] and \[C{{O}_{2}}\]
  done clear
  D)
   hydrocarbons, ozone and \[S{{O}_{x}}\]
  done clear
  View Answer play_arrow

• question_answer129) The plant part which consists of two generations one within the other, is
  A)
  germinated pollen grain
  done clear
  B)
  embryo
  done clear
  C)
   unfertilized ovule
  done clear
  D)
   seed
  done clear
  View Answer play_arrow

• question_answer130) Cultivation of Bt cotton has been much in the news. The prefix Bt means:
  A)
  Barium-treated cotton seeds
  done clear
  B)
  Bigger thread variety of cotton with better tensile strength
  done clear
  C)
   produced by biotechnology using restriction enzymes and ligases
  done clear
  D)
   carrying an endotoxin gene from Bacillus thuringiensis
  done clear
  View Answer play_arrow

• question_answer131) Which one feature is common to leech, cockroach and scorpion?
  A)
  Nephridia           
  done clear
  B)
         Ventral nerve cord                         
  done clear
  C)
   Cephalization                   
  done clear
  D)
   Antennae
  done clear
  View Answer play_arrow

• question_answer132) The total number of nitrogenous bases in human genome is estimated to be about
  A)
  3.5 million           
  done clear
  B)
         35 thousand      
  done clear
  C)
          35 million           
  done clear
  D)
          3.1 billion
  done clear
  View Answer play_arrow

• question_answer133) The great barrier reef along the east coast of Australia can be categorized as
  A)
  population         
  done clear
  B)
         community        
  done clear
  C)
          ecosystem        
  done clear
  D)
          biome
  done clear
  View Answer play_arrow

• question_answer134) Which one of the following is a matching pair of a drug and its category?
  A)
  Amphetamines                                 ?stimulant
  done clear
  B)
  Lysergic acid dimethyl amide      ?narcotic
  done clear
  C)
   Heroin                                                 ?psychotropic
  done clear
  D)
   Benzodiazepam                                               ?pain killer
  done clear
  View Answer play_arrow

• question_answer135) A baby has been born with a small tail. It is the case exhibiting
  A)
  retrogressive evolution
  done clear
  B)
  mutation            
  done clear
  C)
          atavism                              
  done clear
  D)
          metamorphosis
  done clear
  View Answer play_arrow

• question_answer136) Which one of the following is correctly matched regarding an institute and its location?
  A)
  National Institute of Virology                                      ?Pune
  done clear
  B)
  National Institute of Communicable disease                        ?Lucknow
  done clear
  C)
                  Central Drug Research Institute Institute              ?Kasauli
  done clear
  D)
   National Institute of Nutrition                                   ?Mumbai
  done clear
  View Answer play_arrow

• question_answer137) Severe Acute Respiratory Syndrome (SARS)
  A)
  is caused by a variant of Pneumococcus pneumonia
  done clear
  B)
  is caused by a variant of the common cold virus (corona virus)
  done clear
  C)
   is an acute form of asthma
  done clear
  D)
   affects non-vegetarians much faster than the vegetarians
  done clear
  View Answer play_arrow

• question_answer138) What is the first step in the Southern blot technique?
  A)
  Denaturation of DNA on the gel for hybridization with specific probe
  done clear
  B)
  Production of a group of genetically identical cells
  done clear
  C)
   Digestion of DNA by restriction enzyme
  done clear
  D)
   Denaturation of DNA from a nucleated cell such as the one from the scene of crime
  done clear
  View Answer play_arrow

• question_answer139) Which one of the following pairs is correctly matched with regard to the codon and the amino acid coded by it?
  A)
  UUA-valine        
  done clear
  B)
         AAA-lysine         
  done clear
  C)
                         AUG-cysteine   
  done clear
  D)
          CCC-alanine
  done clear
  View Answer play_arrow

• question_answer140) Based on cellular mechanisms there are two major types of regeneration found in the animals. Which one of the following is the correct example of the type mentioned?
  A)
  Morphollaxis      ? Regeneration of two transversely cut equal pieces of a Hydra into two small hydras
  done clear
  B)
  Epimorphosis     ? Replacement of old and dead erythrocytes by the new ones
  done clear
  C)
   Morphollaxi;,    ? Healing up of a wound in the skin
  done clear
  D)
   Epimorphosis    ? Regeneration of crushed and filtered out pieces of a Planaria into as many new Planarians
  done clear
  View Answer play_arrow

• question_answer141) Which one of the following four glands is correctly matched with the accompanying description?
  A)
  Thyroid                 ? Hyperactivity in young children causes cretinism
  done clear
  B)
  Thymus                ? Starts undergoing atrophy after puberty
  done clear
  C)
   Parathyroid       ? Secretes parathormone, which promotes movement of calcium ions from blood into bones during classification
  done clear
  D)
   Pancreas             ? Delta cells of the islets of Langerhans secrete a hormone, which stimulates glycolysis in liver
  done clear
  View Answer play_arrow

• question_answer142) An insect bite may result in inflammation of that spot. This is triggered by the alarm chemicals such as
  A)
  histamine and dopamine
  done clear
  B)
  histamine and kinins
  done clear
  C)
   interferons and opsonin
  done clear
  D)
   interferons and histones
  done clear
  View Answer play_arrow

• question_answer143) Which one of the following pairs of geographical areas show maximum biodiversity in our country?
  A)
  Sunderbans and Rann of Kutch
  done clear
  B)
  Eastern Ghats and West Bengal
  done clear
  C)
   Eastern Himalaya and Western Ghats
  done clear
  D)
   Kerala and Punjab
  done clear
  View Answer play_arrow

• question_answer144) One of the ex situ conservation methods for endangered species is
  A)
  wild-life sanctuaries       
  done clear
  B)
  biosphere reserves
  done clear
  C)
   cryopreservation
  done clear
  D)
   national parks
  done clear
  View Answer play_arrow

• question_answer145) Formation of non-functional methaemoglobin causes blue-baby syndrome. This is due to
  A)
  excess of arsenic concentration in drinking water
  done clear
  B)
  excess of nitrates in drinking water
  done clear
  C)
   deficiency of iron in food
  done clear
  D)
   increased methane  content  in  the atmosphere
  done clear
  View Answer play_arrow

• question_answer146) Antigen binding site in an antibody is found between
  A)
  two light chains
  done clear
  B)
  two heavy chains
  done clear
  C)
   one heavy and one light chain
  done clear
  D)
   either between two light chains or between one heavy and one light chain depending upon the nature of antigen
  done clear
  View Answer play_arrow

• question_answer147) Grain colour in wheat is determined by three pairs of polygere. Following the cross AABBCC (dark colour) x aabbcc (light colour), in F2 generation what proportion of the progeny if likely to resemble either parent?
  A)
  Half                       
  done clear
  B)
         Less than 5 percent
  done clear
  C)
   One third        
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer148) The given graph shows the effect of substrate concentration on the rate of reaction of the enzyme green gram-phosphatase. What does the graph indicate?
  A)
  The rate of enzyme reaction is directly proportional to the substrate concentration
  done clear
  B)
  Presence of an enzyme inhibitor in die reaction mixture
  done clear
  C)
   Formation of an enzyme-substrate complex
  done clear
  D)
   At higher substrate concentration the pH increases
  done clear
  View Answer play_arrow

• question_answer149) In an experiment, freshly hatched larvae of an insect (khapra beetle) were reared on a basal diet (complete diet without cholesterol) with increasing amounts of cholesterol. Results obtained are shown in the graph given in the table The graph indicates:
  A)
  Cholesterol is an essential dietary requirement of khapra beetle
  done clear
  B)
  Growth of khapra beetle is directly proportional to cholesterol concentration
  done clear
  C)
   Cholesterol concentration of \[2\mu g/g\] diet is the optimum level
  done clear
  D)
   Growth of khapra beetle in inhibited when cholesterol concentration exceeds \[2\mu g/g\] diet
  done clear
  View Answer play_arrow

• question_answer150) Given below is a trable comparing the effects of sympathetic and parasympathetic nervous system for four features (a-d). Which one feature is correctly described?
  A)

  Feature	Sympathetic Nervous System	Parasympathetic Nervous System
  Salivary gland	Stimulates secretion	inhibits secretion

   
  done clear
  B)

  Feature	Sympathetic Nervous System	Parasympathetic Nervous System
  Pupil of the eye	Dilate	Constricts

                                                                                
  done clear
  C)

  Feature	Sympathetic	Parasympathetic
  Heart rate	Decreases	Increases

  done clear
  D)

  Feature	Sympathetic	Parasympathetic
  Intestinal peristalsis	Stimulates	Inhibits

  done clear
  View Answer play_arrow

• question_answer151) Which one of the following animals is correctly matched with its one characteristic and the taxon?
  A)

  Animals	Characteristic	Taxon
  Millipede	Ventral nerve cord	Arachnida

  done clear
  B)

  Animals	Characteristic	Taxon
  Duckbilled	Oviparous	Mammalian

  done clear
  C)

  Animals	Characteristic	Taxon
  Silver fish	Pectoral and pelvic fins	Chordate

  done clear
  D)

  Animals	Characteristic	Taxon
  Sea anemone	Triploblastic	Cnidaria

  done clear
  View Answer play_arrow

• question_answer152) Which one of the following pairs of the kind of cells and their secretion of correctly matched?
  A)
  Oxyntic cells - A secretion with pH between 2.0 and 3.0
  done clear
  B)
  Alpha cells of - Secretion that is lets of decreases blood sugar Langerhans level
  done clear
  C)
  Kupffer cells - A digestive enzyme that hydrolyses nucleic acids
  done clear
  D)
   Sebaceous glands - A secretion that evaporates for cooling
  done clear
  View Answer play_arrow

• question_answer153) Which of the following pair of feature is a good example of polygenic inheritance?
  A)
  Human height and skin colour
  done clear
  B)
  ABO blood group in humans and flower colour of Mirabilis jalapa
  done clear
  C)
   Hair pigment of mouse and tongue rolling in humans
  done clear
  D)
   Human eye colour and sickle cell anaemia
  done clear
  View Answer play_arrow

• question_answer154) Mating of an organism to a double recessive in order to determine whether it is homozygous or heterozygous for a character under consideration is called
  A)
  reciprocal cross                
  done clear
  B)
         test cross            
  done clear
  C)
          dihybrid cross  
  done clear
  D)
          back cross
  done clear
  View Answer play_arrow

• question_answer155) In the following table identify the correct matching of the crop, its disease and the corresponding pathogen
  A)

  Crop	Disease	Pathogen
  Citrus	Canker	Pseudomonas rubrilineans

  done clear
  B)

  Crop	Disease	Pathogen
  Potato	Late blight	Fusarium udum

  done clear
  C)

  Crop	Disease	Pathogen
  Brinjal	Root-knot	Meloidogyne incognita

  done clear
  D)

  Crop	Disease	Pathogen
  Pigeion pea	Seed gall	Phytophthora infestans

  done clear
  View Answer play_arrow

• question_answer156) Genes present in the cytoplasm of eukaryotic cells, are found in
  A)
  mitochondria and inherited via egg cytoplasm
  done clear
  B)
  lysosomes and peroxisomes
  done clear
  C)
  Golgi bodies and smooth endoplasmic reticulum
  done clear
  D)
   plastids and inherited via male gamete
  done clear
  View Answer play_arrow

• question_answer157) A normal woman whose father was colourblind, is married to a normal man. The sons would be
  A)
  75% colourblind                               
  done clear
  B)
  50% colourblind                               
  done clear
  C)
   all normal          
  done clear
  D)
          all colourblind
  done clear
  View Answer play_arrow

• question_answer158) Which one of the following precedes re-formation of the nuclear envelope during M-phase of the cell cycle?
  A)
  Decondensation from chromosomes and reassembly of the nuclear lamina
  done clear
  B)
  Transcription from chromosomes and reassembly of the nuclear lamina
  done clear
  C)
   Formation of the contractile ring and formation of the phragmoplast
  done clear
  D)
   Formation of the contractile ring and transcription from chromosomes
  done clear
  View Answer play_arrow

• question_answer159) What is common between chloroplasts, chromoplasts and leucoplasts?
  A)
  Presence of pigments
  done clear
  B)
  Possession of thylakoids and grana
  done clear
  C)
   Storage of starch, proteins and lipids
  done clear
  D)
   Ability to multiply by a fission-like process
  done clear
  View Answer play_arrow

• question_answer160) In India, we find mangoes with different flavors, colours, fiber content, sugar content and even shelf life. The large variation is ion account of
  A)
  species diversity              
  done clear
  B)
         induced mutations         
  done clear
  C)
   genetic diversity                             
  done clear
  D)
   hybridization
  done clear
  View Answer play_arrow

• question_answer161) Assertion A network of food chains existing together in an ecosystem is known as a food web. Reason An animal like kite cannot be a part of a food web.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer162) Assertion In plant tissue culture, somatic embryos can be induced from any plant cell. Reason Any viable plant cell can differentiate in to somatic embryos.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer163) Assertion The earliest organisms that appeared on the earth were non-green and presumably anaerobes. Reason The first autotrophic organisms were the chemo-autotrophs that never released oxygen.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer164) Assertion Escherichia coli, Shigella sp. and Salmonella sp. are all responsible for diarrhoeal diseases. Reason Dehydration is common to all types of diarrhoeal diseases and adequate supply of fluids and electrolytes should be ensured.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer165) Assertion In collateral vascular bundles, phloem is situated towards inner side. Reason In monocot stem, cambium is present.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer166) Assertion In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote). Reason Both bacteria and yeast multiply very fast to form huge population, which express the desired gene.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer167) Assertion Interferons are a type of antibodies produced by body cells infected by bacteria. Reason Interferons stimulate inflammation at the site of injury.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer168) Assertion: Persons suffering from haemophilia fail to produce blood clotting factor VIII. Reason Prothrombin producing platelets in such persons are found in very low concentration.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer169) Assertion Replication and transcription occur in the nucleus but translation occurs in the cytoplasm. Reason m RNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer170) Assertion Human ancestors never used their tails and so the tail expressing gene has disappeared in them. Reason Lamarcks theory of evolution is popularly called theory of continuity of germ plasm.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer171) Assertion Diabetes insipidus is marked by excessive urination and too much thirst of water. Reason Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer172) Assertion Coacervates are believed to be the precursors of life. Reason Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer173) Assertion Tapeworm roundworm and pinworm are endoparasites of human intestine. Reason Improperly cooked food is the source of intestinal infections.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer174) Assertion Fish meal is a rich source of protein for cattle and poultry. Reason Fish meal is produced from non-edible parts of fishes like fins, tail.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer175) Assertion Dope test is used to estimate the level of blood alcohol by analyzing the breath of persons drinking alcohol. Reason A drunken person usually feels tense and less talkative.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer176) Assertion Mast cells in the human body release excessive amounts of inflammatory chemicals, which cause allergic reactions. Reason Allergens in the environment on reaching human body stimulate mast cells in certain individuals.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer177) Assertion Smaller the organism higher is the rate of metabolism per gram weight. Reason The heart rate of a six month old baby is much higher than that of an old person.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer178) Assertion Bats and whales are classified as mammals. Reason Bats and whales have four-chambered heart.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer179) Assertion Inhabitants close to very busy airports are likely to experience health hazards. Reason Sound level of jet aeroplanes usually exceeds 160 dB.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer180) Assertion A cell membrane shows fluid behavior. Reason A membrane is a mosaic or composite of diverse lipids and proteins.
  A)
  If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark
  done clear
  B)
  If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion, then mark
  done clear
  C)
   If Assertion is true statement but Reason is false, then mark
  done clear
  D)
   If both Assertion and Reason are false statements, then mark
  done clear
  View Answer play_arrow

• question_answer181) The first of the GAEL (Global Alliance for the elimination of Leprosy) was held in
  A)
   New Delhi       
  done clear
  B)
          Bombay                             
  done clear
  C)
          Culcutta        
  done clear
  D)
          Paris.
  done clear
  View Answer play_arrow

• question_answer182) Megger is an instrument to measure
  A)
   very low resistance
  done clear
  B)
          insulation resistance
  done clear
  C)
          inductance of a coil
  done clear
  D)
          all of the above.
  done clear
  View Answer play_arrow

• question_answer183) Terminator technology promotes sale of which of the following that is/are generated by it?
  A)
   gransgenic fertile seed.
  done clear
  B)
          gene modified plants.
  done clear
  C)
          genetically engineered seeds fertilized in next generation.
  done clear
  D)
          all of these.
  done clear
  View Answer play_arrow

• question_answer184) Which among the following has become the third tiger reserve of Assam?
  A)
   Manas Wildlife Sanctury
  done clear
  B)
          Kaziranga National Park
  done clear
  C)
          Nameri National Park
  done clear
  D)
          none of these.
  done clear
  View Answer play_arrow

• question_answer185) To make the acidic soil suitable for agricultural, one of the following material is used.
  A)
   lime             
  done clear
  B)
          gypsum              
  done clear
  C)
          calcium superphosphate
  done clear
  D)
          vegetable compost.
  done clear
  View Answer play_arrow

• question_answer186) The landform which is not associated with wind erosion is
  A)
   sand dune       
  done clear
  B)
          inselberg           
  done clear
  C)
          drumlin         
  done clear
  D)
          mushroom rock.
  done clear
  View Answer play_arrow

• question_answer187) BCG vaccination is to be given to a new born child
  A)
   immediately after child birth
  done clear
  B)
          within 48 hours
  done clear
  C)
          within seven days
  done clear
  D)
          within six months.
  done clear
  View Answer play_arrow

• question_answer188) For reproducing sound, CD (compact disc) audioplayer uses a
  A)
   quartz crystal    
  done clear
  B)
          titanium needle
  done clear
  C)
          laser beam
  done clear
  D)
          barium titanate ceramic
  done clear
  View Answer play_arrow

• question_answer189) In a three pin electrical plug, longest pin should be connected to
  A)
   ground terminal  
  done clear
  B)
          live terminal                     
  done clear
  C)
          neutral terminal  
  done clear
  D)
          any terminal.
  done clear
  View Answer play_arrow

• question_answer190) The new addition to the commonwealth games 2010 is
  A)
   shooting         
  done clear
  B)
          hockey
  done clear
  C)
          wrestling         
  done clear
  D)
          football.
  done clear
  View Answer play_arrow

• question_answer191) The name of the player who established record in World Cup Cricket 2007 of making six sixes is
  A)
   Sanath Jaisurya  
  done clear
  B)
          Virendra Sehwag           
  done clear
  C)
                          Adam Gilchrist   
  done clear
  D)
          Hershelle Gibbs.
  done clear
  View Answer play_arrow

• question_answer192) The lateral meaning of the word Arya is
  A)
   superior       
  done clear
  B)
             learned              
  done clear
  C)
          priest            
  done clear
  D)
          warrior.
  done clear
  View Answer play_arrow

• question_answer193) When T.V. is switched on
  A)
   audio and video both start simultaneously
  done clear
  B)
          audio is heard immediately but video starts later because video needs some warm up time
  done clear
  C)
          video starts immediately but audio is heard later because sound travels at a lesser speed than light
  done clear
  D)
          it depends on the T.V. stand.
  done clear
  View Answer play_arrow

• question_answer194) The instrument of music in which Ustad Amjad Ali Khan has distinguished himself is
  A)
   sarod            
  done clear
  B)
          violin   
  done clear
  C)
          sitar             
  done clear
  D)
          shehnai.
  done clear
  View Answer play_arrow

• question_answer195) A deep and narrow river valley with steep bank is called
  A)
   geyser  
  done clear
  B)
                   bluff                    
  done clear
  C)
          delta             
  done clear
  D)
          canyon.
  done clear
  View Answer play_arrow

• question_answer196) A breath test used by traffic police to check drunken drivers uses -
  A)
   potassium dichormate-sulphuric acid
  done clear
  B)
          potassium permanganate sulphuric acid
  done clear
  C)
          turmeric on filter paper
  done clear
  D)
          silica gel coated with silver nitrate
  done clear
  View Answer play_arrow

• question_answer197) In which of the following books is Knowledge is Power written?
  A)
   Essay on Man    
  done clear
  B)
          Paradise Lost   
  done clear
  C)
          Leviathan        
  done clear
  D)
          Das Capital.
  done clear
  View Answer play_arrow

• question_answer198) Who said "where weather accumulates, men decay"?
  A)
   Abraham Lincoln
  done clear
  B)
          Mao Tsetung   
  done clear
  C)
          Karl Marx       
  done clear
  D)
          Goldsmith.
  done clear
  View Answer play_arrow

• question_answer199) Which of the following computer viruses is named after cherry and caffein soft drink popular with programmers ?
  A)
   sircam            
  done clear
  B)
          code pink                          
  done clear
  C)
          code red         
  done clear
  D)
           malisa
  done clear
  View Answer play_arrow

• question_answer200) The fourth Buddist council was held during the reign of
  A)
   Ashoka
  done clear
  B)
          Chandragupta
  done clear
  C)
          Kanishka
  done clear
  D)
          Chandragupta Vikramaditya
  done clear
  View Answer play_arrow