Solved papers for AIIMS AIIMS Solved Paper-2005

done AIIMS Solved Paper-2005 Total Questions - 200

• question_answer1) Parsec is the unit of:
  A)
  time                                      
  done clear
  B)
  distance
  done clear
  C)
  frequency          
  done clear
  D)
        angular acceleration
  done clear
  View Answer play_arrow

• question_answer2) The voltage gain of the following amplifier is:
  A)
  10                          
  done clear
  B)
        100                        
  done clear
  C)
        1000                      
  done clear
  D)
        9.9
  done clear
  View Answer play_arrow

• question_answer3) A 50 Hz AC source of 20 V is connected across R and C as shown in figure. The voltage across: R is 12 V. The voltage across C is:
  A)
  8V
  done clear
  B)
  16V
  done clear
  C)
  10 V
  done clear
  D)
  not possible to determine unless values of R and C are given
  done clear
  View Answer play_arrow

• question_answer4) The pressure exerted by an electromagnetic wave of intensity / \[(W/{{m}^{2}})\] on a non-reflecting surface is : [c is the velocity of light]
  A)
  \[Fdx={{K}_{f}}-\frac{1}{2}mv_{i}^{2}\]
  done clear
  B)
                        \[F.dx={{K}_{f}}-\frac{1}{2}\times 10\times {{(10)}^{2}}\]                            
  done clear
  C)
        \[\Rightarrow \]                              
  done clear
  D)
        \[F.dx={{K}_{f}}-500\]
  done clear
  View Answer play_arrow

• question_answer5) In the figure given the position-time graph of a panicle of mass 0.1 kg is shown. The impulse at t =2s is :
  A)
  \[0.2\,\,kg\,m{{s}^{-1}}\]     
  done clear
  B)
                                        \[-0.2\,kg\,m{{s}^{-1}}\]                       
  done clear
  C)
           \[0.1\,\,kg\,m{{s}^{-1}}\]     
  done clear
  D)
                        \[-0.4\,kg\,m{{s}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer6) A block of mass 10 kg is moving in x-direction with a constant   speed of 10 m/s. It is subjected to a retarding force F = - 0.1 x J/m during its travel from x = 20 m to x = 30 m. Its final kinetic energy will be:
  A)
  475 J        
  done clear
  B)
                        450 J
  done clear
  C)
  275 J                     
  done clear
  D)
        250 J
  done clear
  View Answer play_arrow

• question_answer7) Energy required to break one bond in DNA is approximately:
  A)
  \[\Rightarrow \] 1 eV                    
  done clear
  B)
        \[\int\limits_{x=20}^{x=30}{(-0.1)x\,dx}\,={{K}_{f}}-500\]0.1 eV               
  done clear
  C)
        \[\int{{{x}^{n}}dx}=\frac{{{x}^{n+1}}}{n+1},\]0.01 eV                     
  done clear
  D)
        \[-0.1\left[ \frac{{{x}^{2}}}{2} \right]_{x=20}^{x=30}={{K}_{f}}-500\] 2.1 eV
  done clear
  View Answer play_arrow

• question_answer8)                                The condition for a uniform spherical mass m of radius r to be a black hole is: [G = gravitational constant and g= acceleration due to gravity]
  A)
   \[-0.1\left[ \frac{{{(30)}^{2}}}{2}-\frac{{{(20)}^{2}}}{2} \right]={{K}_{f}}-500\]    
  done clear
  B)
        \[\Rightarrow \]              
  done clear
  C)
        \[{{K}_{f}}-500=-25\]     
  done clear
  D)
        \[\Rightarrow \]
  done clear
  View Answer play_arrow

• question_answer9) Which of the following is an amorphous solid?
  A)
  Glass         
  done clear
  B)
                        Diamond             
  done clear
  C)
        Salt                        
  done clear
  D)
        Sugar
  done clear
  View Answer play_arrow

• question_answer10) For a constant hydraulic stress on an object, the fractional change in the objects volume (\[{{K}_{f}}=500-25=475J\]) and its bulk modulus (B) are related as:
  A)
  \[\frac{\Delta V}{V}\propto B\]
  done clear
  B)
        \[\frac{\Delta V}{V}\propto \frac{1}{B}\]             
  done clear
  C)
        \[\frac{\Delta V}{V}\propto {{B}^{2}}\] 
  done clear
  D)
        \[\frac{\Delta V}{V}\propto {{B}^{-2}}\]
  done clear
  View Answer play_arrow

• question_answer11) Which of the following functions represents a simple harmonic oscillation?
  A)
  \[B=\frac{normal\,stress}{volume\,strain}\]      
  done clear
  B)
        \[B=-\frac{\Delta P}{\Delta V/V}\]          
  done clear
  C)
        \[B\propto \frac{1}{\frac{\Delta V}{V}}\]
  done clear
  D)
        \[\Rightarrow \]
  done clear
  View Answer play_arrow

• question_answer12) In case of linearly polarised light, the magnitude of the electric field vector :
  A)
  does not change with time
  done clear
  B)
  varies periodically with time
  done clear
  C)
  increases and decrease linearly with time
  done clear
  D)
  is parallel to the direction of propagation
  done clear
  View Answer play_arrow

• question_answer13) The circuit shown below acts as:
  A)
  tuned filter   
  done clear
  B)
                        low pass filter   
  done clear
  C)
        high pass filter 
  done clear
  D)
        rectifier
  done clear
  View Answer play_arrow

• question_answer14) For sky wave propagation of 10 MHz signal, what should be the minimum electron density in ionosphere?
  A)
  \[\frac{\Delta V}{V}\propto \frac{1}{B}\]                             
  done clear
  B)
  \[y=\sin \omega t\,-\cos \,\omega t\]   
  done clear
  C)
        \[\frac{dy}{dt}=\omega \cos \omega t+\omega \sin \omega t\]               
  done clear
  D)
        \[\frac{{{d}^{2}}y}{d{{t}^{2}}}=-{{\omega }^{2}}\sin \omega t+{{\omega }^{2}}\cos \omega t\]
  done clear
  View Answer play_arrow

• question_answer15) Which of the following logic gates is an universal gate?
  A)
  OR  
  done clear
  B)
                                        NOT                      
  done clear
  C)
  AND                      
  done clear
  D)
        NAND
  done clear
  View Answer play_arrow

• question_answer16) What should be the maximum acceptance angle at the air-core interface of an optical fibre if n1, and n2 are the refractive indices of the core and the cladding, respectively?   
  A)
  \[a=-{{\omega }^{2}}(\sin \,\omega t-\cos \omega t)\] 
  done clear
  B)
        \[a=-{{\omega }^{2}}y\]               
  done clear
  C)
        \[\Rightarrow \]              
  done clear
  D)
        \[a\propto -y\]
  done clear
  View Answer play_arrow

• question_answer17) A conducting ring of radius 1 m is placed in an uniform magnetic field B of 0.01 T oscillating with frequency 100 Hz with its plane at right angle to B. What will be the induced electric Field?
  A)
  \[{{f}_{c}}=9\sqrt{{{N}_{\max }}}\]
  done clear
  B)
                        \[{{m}^{3}}\]     
  done clear
  C)
                        \[\therefore \] 
  done clear
  D)
        \[{{N}_{\max }}=\frac{f_{c}^{1}}{81}=\frac{{{(10\times {{10}^{6}})}^{2}}}{81}\]
  done clear
  View Answer play_arrow

• question_answer18) Consider an n-p-n transistor amplifier in common-emitter configuration. The current gain of the transistor is 100. If the collector current changes by 1 mA, what will be the change in emitter current?
  A)
  1.1 mA 
  done clear
  B)
                                        1.01mA
  done clear
  C)
        0.01 mA               
  done clear
  D)
        10 mA        
  done clear
  View Answer play_arrow

• question_answer19) A telescope has an objective lens of focal length 200 cm and an eye piece with focal length 2 cm. If this telescope is used to see a 50 m tall building at a distance of 2 km, what is the height of the image of the building formed by the objective lens?
  A)
  5 cm   
  done clear
  B)
                                        10 cm                   
  done clear
  C)
  1 cm                      
  done clear
  D)
        2 cm
  done clear
  View Answer play_arrow

• question_answer20) The ground state energy of hydrogen atom is -13.6 eV. What is the potential energy of the electron in this state?
  A)
   Zero                                     
  done clear
  B)
  -27.2eV
  done clear
  C)
        1 eV                      
  done clear
  D)
        2 eV
  done clear
  View Answer play_arrow

• question_answer21) Solid targets of different elements are bombarded by highly energetic electron beams. The frequency (\[=1.2\times {{10}^{12}}{{m}^{-3}}\]) of the characteristic X-rays emitted from different targets varies with atomic number Z as:
  A)
  \[f\propto \sqrt{Z}\]     
  done clear
  B)
  \[f\propto {{Z}^{2}}\]    
  done clear
  C)
  \[f\propto Z\]   
  done clear
  D)
                        \[f\propto {{Z}^{3/2}}\]
  done clear
  View Answer play_arrow

• question_answer22) Two infinitely long parallel conducting plates having surface charge densities + \[\Delta \phi =2\times 0.01\times \pi \times {{(1)}^{2}}\times 200\times \cos {{0}^{o}}\]and -\[\therefore \] respectively, are separated by a small distance. The medium between the plates is vacuum. It\[e=\frac{-2\times 0.01\times \pi \times {{(1)}^{2}}\times 200}{100}\] is the dielectric permittivity of vacuum, then the electric field in the region between the plates is:
  A)
  zero                                      
  done clear
  B)
  \[=-4\pi Volt\]  
  done clear
  C)
        \[\therefore \] 
  done clear
  D)
        \[E=\frac{|e|}{2\pi r}=\frac{4\pi }{2\pi r}=\frac{2}{1}=2V/m\]
  done clear
  View Answer play_arrow

• question_answer23) In a semiconducting material the mobilities of electrons and holes are \[Current\,gain=\frac{change\,in\,collector\,current}{change\,in\,base\,cirrent}\]and \[\beta =\frac{\Delta {{i}_{C}}}{\Delta {{i}_{B}}}\] respectively which of the following is true?
  A)
  \[{{i}_{E}}={{i}_{B}}+{{i}_{C}}\]
  done clear
  B)
                        \[\Rightarrow \]              
  done clear
  C)
        \[\Delta {{i}_{E}}=\Delta {{i}_{B}}+\Delta {{i}_{C}}\]         
  done clear
  D)
        \[\beta =\frac{\Delta {{i}_{C}}}{\Delta {{i}_{E}}-\Delta {{i}_{C}}}\]
  done clear
  View Answer play_arrow

• question_answer24) The magnetic moment \[\beta =100,\Delta {{i}_{C}}=1mA\]of a revolving electron around the nucleus varies with principal quantum number n as:
  A)
  \[\therefore \] 
  done clear
  B)
                        \[100=\frac{1}{\Delta {{i}_{E}}-1}\]          
  done clear
  C)
        \[\Delta {{i}_{E}}=1=\frac{1}{100}=0.01\]                              
  done clear
  D)
        \[\Delta {{i}_{E}}=1+0.01=1.01mA.\]
  done clear
  View Answer play_arrow

• question_answer25) A radioactive material has half-life of 10 days. What fraction of the material would remain after 30 days?
  A)
  0.5           
  done clear
  B)
                        0.25                       
  done clear
  C)
  0.125                    
  done clear
  D)
        0.33
  done clear
  View Answer play_arrow

• question_answer26) According to Hubbles law, the red-shift (Z)of a receding galaxy and its distance r from earth are related as:
  A)
  \[Z\propto r\]   
  done clear
  B)
  \[Z\propto 1/r\]              
  done clear
  C)
        \[Z\propto 1/{{r}^{2}}\]
  done clear
  D)
        \[Z\propto \,{{r}^{3/2}}\]
  done clear
  View Answer play_arrow

• question_answer27) When exposed to sunlight, thin films of oil on water often exhibit brilliant colours due to the phenomenon of:
  A)
  interference
  done clear
  B)
        diffraction          
  done clear
  C)
        dispersion          
  done clear
  D)
        polarization
  done clear
  View Answer play_arrow

• question_answer28) For ensuring dissipation of san-.J energy in all three resistors \[\frac{1}{{{v}_{0}}}=\frac{1}{{{f}_{0}}}+\frac{1}{{{u}_{0}}}\]connected as shown in figure, their values must be related as:
  A)
  \[{{f}_{0}}=200cm\]       
  done clear
  B)
        \[{{u}_{0}}=-2km=-2\times {{10}^{5}}cm\]
  done clear
  C)
  \[O=50m=5\times {{10}^{3}}cm\]
  done clear
  D)
  \[\therefore \]
  done clear
  View Answer play_arrow

• question_answer29) The apparent depth of water in cylindrical water tank of diameter 2R cm is reducing at the rate of x cm/ min when water is being drained out at a constant rate. The amount of water drained in cc per minute is: (\[{{n}_{1}}\] = refractive index of air, \[{{n}_{2}}=\] refractive index of water)
  A)
  \[\frac{1}{{{v}_{0}}}=\frac{1}{200}+\frac{1}{-200\times {{10}^{3}}}\]
  done clear
  B)
  \[=\frac{{{10}^{3}}-1}{200\times {{10}^{3}}}\]    
  done clear
  C)
        \[\frac{2\pi \,R\,{{n}_{1}}}{{{n}_{2}}}\]  
  done clear
  D)
                        \[{{v}_{o}}=\frac{200\times {{10}^{3}}}{999}cm\]
  done clear
  View Answer play_arrow

• question_answer30)  A candle of diameter d is floating on a liquid in a cylindrical container of diameter D (D > > d) as shown in figure. If it is burning at the rate of 2 cm/h then the top of the candle will:
  A)
           remain at the same height
  done clear
  B)
  fall at the rate of 1 cm/h
  done clear
  C)
  fall at the rate of 2 cm/h
  done clear
  D)
  go up at the rate of 1 cm/h
  done clear
  View Answer play_arrow

• question_answer31) A given shaped glass tube having uniform cross-section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity \[m=\left| \frac{{{v}_{o}}}{{{u}_{o}}} \right|=\frac{I}{O}\] then:
  A)
  water levels in both sections A and B go up
  done clear
  B)
  water level in section A goes up and that in B comes down
  done clear
  C)
  water level in section A comes down and that in B it goes up
  done clear
  D)
  water levels remain same in both sections
  done clear
  View Answer play_arrow

• question_answer32) When a ball is thrown up vertically with velocity \[\therefore \]. it reaches a maximum height of h. If one wishes to triple the maximum height then the ball should be thrown with velocity :
  A)
  \[\frac{200\times {{10}^{3}}}{999\times 200\times {{10}^{3}}}=\frac{I}{5\times {{10}^{3}}}\]       
  done clear
  B)
                        \[\Rightarrow \]                              
  done clear
  C)
  \[I=\frac{5\times {{10}^{3}}}{999}=5cm\]                             
  done clear
  D)
        \[\frac{m{{v}^{2}}}{r}=\frac{KZ{{e}^{2}}}{{{r}^{2}}}\]
  done clear
  View Answer play_arrow

• question_answer33) A solid sphere is rolling on a frictionless surface, shown in figure with a translational velocity v m/s. If it is to climb the inclined surface then v should be:
  A)
  \[\Rightarrow \]              
  done clear
  B)
        \[\frac{1}{2}m{{v}^{2}}=\frac{1}{2}\frac{KZ{{e}^{2}}}{r}\]             
  done clear
  C)
        \[=\frac{1}{2}m{{v}^{2}}=\frac{KZ{{e}^{2}}}{2r}\]                             
  done clear
  D)
        \[=\frac{KZe}{r}\]
  done clear
  View Answer play_arrow

• question_answer34) A horizontal platform is rotating with uniform angular velocity around the vertical axis passing through its centre. At some instant of time a viscous fluid of mass m is dropped at the centre and is allowed 10 spread out and finally fall. The angular velocity during this period :
  A)
  decreases continuously
  done clear
  B)
  decreases initially and increases again
  done clear
  C)
  remains unaltered
  done clear
  D)
  increases continuously
  done clear
  View Answer play_arrow

• question_answer35) A ladder is leaned against a smooth wall and it is allowed to slip on a frictionless floor. Which figure represents the track of its centre of mass?
  A)
  
  done clear
  B)
  
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer36) A person is standing in an elevator. In which situation he finds his weight less?
  A)
  When the elevator moves upward with constant acceleration
  done clear
  B)
  When the elevator moves downward with constant acceleration
  done clear
  C)
  When the elevator moves upward with uniform velocity
  done clear
  D)
  When the elevator moves downward with uniform velocity
  done clear
  View Answer play_arrow

• question_answer37) A magnet is made to oscillate with a particular frequency, passing through a coil as shown in figure. The time variation of the magnitude of emf generated across the coil during one cycle is:
  A)
  
  done clear
  B)
  
  done clear
  C)
   
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer38) Two concentric conducting thin spherical shells A and B having radii \[\therefore \] and \[=\text{ }potential\text{ }\times \text{ }charge\]\[=\frac{KZe}{r}(-e)=-\frac{KZ{{e}^{2}}}{r}\] are charged to \[E=KE+PE\], and -\[=\frac{1}{2}\frac{KZ{{e}^{2}}}{r}-\frac{KZ{{e}^{2}}}{r}\] \[=\frac{KZ{{e}^{2}}}{2r}\]. The electrical field along a line. (passing through the centre) is:
  A)
  
  done clear
  B)
  
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer39) Dimensions of electrical resistance are:
  A)
  \[PE=2E\]                           
  done clear
  B)
  \[E=-136eV\]                    
  done clear
  C)
  \[\therefore \] 
  done clear
  D)
        \[PE=-2\times 13.6\]
  done clear
  View Answer play_arrow

• question_answer40) A particle having charge q and mass m is projected with velocity \[=-27.2eV\]in uniform electric field \[f=(2.48\times {{10}^{15}}){{(Z-1)}^{2}}Hz\]. Change in momentum \[\Rightarrow \] during any time interval t is given by:
  A)
  \[f\propto {{Z}^{2}}\]                                    
  done clear
  B)
  \[+\sigma \]                      
  done clear
  C)
        \[-\sigma \]                       
  done clear
  D)
        zero
  done clear
  View Answer play_arrow

• question_answer41) Assertion: Specific gravity of a fluid is a dimensionless quantity. Reason: It is the ratio of density of fluid to the density of water.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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_answer42) Assertion: Frictional forces are conservative forces. Reason: Potential energy can be associated with frictional forces.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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_answer43) Assertion: By roughening the surface of a glass sheet its transparency can be reduced. Reason: Glass sheet with rough surface absorbs more light.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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_answer44) Assertion: Diode lasers are used as optical sources in optical communication. Reason: Diode lasers consume less energy.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: Diamond glitters brilliantly. Reason: Diamond does not absorb sunlight.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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 energy (E) and momentum (p) of a photon are related by p = E/c. Reason: The photon behaves like a particle.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: The clouds in sky generally appear to be whitish. Reason: Diffraction due to clouds is efficient in equal measure at all wavelengths.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: Television signals are received through sky-wave propagation. Reason: The ionosphere reflects electro- magnetic waves of frequencies greater than a certain critical frequency.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: The logic gate NOT can be built using diode. Reason: The output voltage and the input voltage of the diode have 180° phase difference.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: The resolving power of a telescope is more if the diameter of the objective lens is more. Reason: Objective lens of large diameter collects more light.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: Reversible systems are difficult to find in real world. Reason: Most processes are dissipative in nature.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: For system of particles under central force field, the total angular momentum is conserved. Reason: The torque acting on such a system is zero.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: Air quickly leaking out of a balloon becomes cooler. Reason:   The leaking air undergoes adiabatic expansion.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: It is not possible to use \[E=E+E=2E\]as the fuel for fusion energy. Reason: The binding energy of \[\sigma \] is too small.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: The number of electrons in a p-type silicon semiconductor is less than the number of electrons in a pure silicon semiconductor at room temperature.
  A)
  Reason: It is due to law of mass action. If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: In a common-emitter transistor amplifier the input current is much less than the output current. Reason: The common-emitter transistor amplifier has very high input impedance.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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 body that is a good radiator is also a good absorber of radiation at a given wavelength. Reason: According to Kirchhoffs law the absorptivity of a body is equal to its emissivity at a given wavelength.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: In pressure-temperature (P-T) phase diagram of water, the slope of the melting curve is found to be negative. Reason: Ice contracts on melting to water.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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:  For higher temperatures the peak emission wavelength of a black body shifts to lower wavelengths. Reason: Peak emission wavelengths of a black body is proportional to the fourth-power of temperature.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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: For Reynolds number \[E\frac{\sigma }{2{{\varepsilon }_{0}}}\] the flow of fluid is turbulent. Reason: Inertial forces are dominant compared to the viscous forces at such high Reynolds numbers.
  A)
  If both assertion and reason are true and reason is the correct explanation of assertion.
  done clear
  B)
  If both assertion and reason are true but reason is not the correct explanation of 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) Among the following molecules (i) \[\overset{\centerdot \centerdot }{\mathop{X}}\,e{{O}_{3}}\] (ii) \[\overset{\centerdot \centerdot }{\mathop{X}}\,eO{{F}_{4}}\]     (iii)  \[\overset{\centerdot \centerdot }{\mathop{X}}\,e{{F}_{6}}\] Those having same number of lone pairs on \[Xe\] are:
  A)
  (i) and (ii) only
  done clear
  B)
  (i) and (iii) only
  done clear
  C)
  (ii) and (iii) only
  done clear
  D)
  (i), (ii) and (iii)                        
  done clear
  View Answer play_arrow

• question_answer62) An aqueous solution of \[CoC{{l}_{2}}\] on addition of excess of concentrated \[HCl\] turns blue due to formation of:
  A)
  \[[Co{{({{H}_{2}}O)}_{4}}C{{l}_{2}}]\]                     
  done clear
  B)
  \[{{[Co{{({{H}_{2}}O)}_{2}}C{{l}_{4}}]}^{2-}}\]
  done clear
  C)
  \[{{[CoC{{l}_{4}}]}^{2-}}\]       
  done clear
  D)
         \[[Co{{({{H}_{2}}O)}_{2}}C{{l}_{2}}]\]
  done clear
  View Answer play_arrow

• question_answer63) In which of the following pairs both the complexes show optical isomerism?
  A)
  \[cis-{{[Cr{{({{C}_{2}}{{O}_{4}})}_{2}}C{{l}_{2}}]}^{3-}}\,cis-[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]\]
  done clear
  B)
  \[[Co{{(en)}_{3}}]C{{l}_{3}},cis-[Co{{(en)}_{2}}C{{l}_{2}}]Cl\]
  done clear
  C)
  \[[PtCl(diem)]Cl,\,{{[NiC{{l}_{2}}B{{r}_{2}}]}^{2-}}\]
  done clear
  D)
  \[[Co{{(N{{O}_{3}})}_{3}}{{(N{{H}_{3}})}_{3}}],cis-Pt{{(en)}_{2}}C{{l}_{2}}]\]
  done clear
  View Answer play_arrow

• question_answer64) The diamagnetic species is:
  A)
  \[{{[Ni{{(CN)}_{4}}]}^{2-}}\]
  done clear
  B)
         \[{{[NiC{{l}_{4}}]}^{2-}}\]             
  done clear
  C)
  \[{{[CoC{{l}_{4}}]}^{2-}}\]    
  done clear
  D)
  \[{{[Co{{F}_{6}}]}^{2-}}\]
  done clear
  View Answer play_arrow

• question_answer65) In the balanced chemical reaction, \[IO_{3}^{-}+a{{I}^{-}}+b{{H}^{+}}\xrightarrow{{}}c{{H}_{2}}O+d{{I}_{2}}\] a, b, c and d respectively corresponds to:
  A)
  5, 6, 3, 3                               
  done clear
  B)
  5, 2, 6, 3               
  done clear
  C)
         3, 5, 3, 6               
  done clear
  D)
         5, 6, 5, 5
  done clear
  View Answer play_arrow

• question_answer66) Among the following pairs of ions, the lower oxidation state in aqueous solution is more stable than the other, in:
  A)
  \[T{{i}^{+}},T{{i}^{3+}}\]               
  done clear
  B)
         \[C{{u}^{+}},C{{u}^{2+}}\]           
  done clear
  C)
         \[C{{r}^{2+}},C{{r}^{3+}}\]     
  done clear
  D)
         \[{{V}^{2+}},V{{O}^{2+}}\]
  done clear
  View Answer play_arrow

• question_answer67) The number of  \[P-O-P\] bridges in the structure of phosphorus pent oxide and phosphorus trioxide are respectively:
  A)
  \[6,6\]                  
  done clear
  B)
         \[5,5\]                  
  done clear
  C)
  \[5,6\]                  
  done clear
  D)
         \[6,5\]
  done clear
  View Answer play_arrow

• question_answer68) In diborane, the two \[H-B-H\] angles are nearly:
  A)
  \[{{60}^{o}},{{120}^{o}}\]            
  done clear
  B)
         \[{{95}^{o}},{{120}^{o}}\]            
  done clear
  C)
         \[{{95}^{o}},{{150}^{o}}\]      
  done clear
  D)
         \[{{120}^{o}},{{180}^{o}}\]
  done clear
  View Answer play_arrow

• question_answer69) Which of the following gives propyne on hydrolysis?
  A)
  \[A{{l}_{4}}{{C}_{3}}\]                   
  done clear
  B)
         \[M{{g}_{2}}{{C}_{3}}\]
  done clear
  C)
         \[{{B}_{4}}C\]                   
  done clear
  D)
         \[L{{a}_{4}}{{C}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer70) The pair of amphoteric hydroxides is:
  A)
  \[Al{{(OH)}_{3}},LiOH\]
  done clear
  B)
  \[Be{{(OH)}_{2}}.Mg{{(OH)}_{2}}\]
  done clear
  C)
  \[B{{(OH)}_{3}}.Be{{(OH)}_{2}}\]
  done clear
  D)
  \[Be{{(OH)}_{2}}.Zn{{(OH)}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer71) Which of the following is a carbonate ore?
  A)
  Pyrolusite           
  done clear
  B)
  Malachite           
  done clear
  C)
         Diaspore       
  done clear
  D)
         Cassiterite
  done clear
  View Answer play_arrow

• question_answer72) \[_{92}^{238}U\] emits 8 \[\alpha \]-particles and \[6\beta \]-particles. The neutron/proton ratio in the product nucleus is:
  A)
  \[60/41\]            
  done clear
  B)
         \[61/40\]            
  done clear
  C)
         \[62/41\]         
  done clear
  D)
         \[61/42\]
  done clear
  View Answer play_arrow

• question_answer73) The correct order for the wavelength of absorption in the visible region is:
  A)
  \[{{[Ni{{(N{{O}_{2}})}_{6}}]}^{4}}<{{[Ni{{(N{{H}_{3}})}_{6}}]}^{2+}}<{{[Ni{{({{H}_{2}}O)}_{6}}]}^{2+}}\]
  done clear
  B)
  \[{{[Ni{{(N{{O}_{2}})}_{6}}]}^{4}}<{{[Ni{{({{H}_{2}}O)}_{6}}]}^{2+}}<{{[Ni{{(N{{H}_{3}})}_{6}}]}^{2+}}\]
  done clear
  C)
  \[{{[Ni{{({{H}_{2}}O)}_{6}}]}^{2+}}<{{[Ni{{(N{{H}_{3}})}_{6}}]}^{2+}}<{{[Ni{{(N{{O}_{2}})}_{6}}]}^{4-}}\]
  done clear
  D)
  \[{{[Ni{{(N{{H}_{3}})}_{6}}]}^{2+}}<{{[Ni{{({{H}_{2}}O)}_{6}}]}^{2+}}<{{[Ni{{(N{{O}_{2}})}_{6}}]}^{4-}}\]
  done clear
  View Answer play_arrow

• question_answer74) \[{{F}_{2}}\]formed by reacting \[{{K}_{2}}Mn{{F}_{6}}\] with:
  A)
  \[Sb{{F}_{5}}\]                 
  done clear
  B)
         \[Mn{{F}_{3}}\]
  done clear
  C)
         \[KSb{{F}_{6}}\]         
  done clear
  D)
         \[Mn{{F}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer75) The is electronic pair is:
  A)
  \[C{{l}_{2}}{{O}_{3}},ICl_{2}^{-}\]     
  done clear
  B)
         \[ICl_{2}^{-},Cl{{O}_{2}}\]           
  done clear
  C)
         \[IF_{2}^{+},\,I_{3}^{-}\]         
  done clear
  D)
         \[ClO_{2}^{-},ClF_{2}^{+}\]
  done clear
  View Answer play_arrow

• question_answer76) Which of the following chemicals are used to manufacture methyl isocyanate that caused Bhopal Tragedy? (i) Methylamine               (ii) Phosgene (iii) Phosphine                   (iv) Dimethylamine
  A)
  (i) and (iii)    
  done clear
  B)
         (iii) and (iv)        
  done clear
  C)
         (i) and (ii)            
  done clear
  D)
         (ii) and (iv)
  done clear
  View Answer play_arrow

• question_answer77) \[\alpha \]-particles can be detected using :
  A)
  thin aluminum sheet
  done clear
  B)
  barium sulphate
  done clear
  C)
  zinc sulphide screen
  done clear
  D)
  gold foil
  done clear
  View Answer play_arrow

• question_answer78) Which of the following molecules is most suitable to disperse benzene in water?
  A)
  
  done clear
  B)
  
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer79) The chemical reaction, \[2AgCl(g)+{{H}_{2}}(g)\to 2HCl(aq)+2Ag(s)\] taking place in a galvanic cell is represented by the notation:
  A)
  \[\Pr (s)|{{H}_{2}}(g),1bar|1\,M\,KCl(aq)|\]                                                  \[AgCl(s)|Ag(s)\]
  done clear
  B)
  \[\Pr (s)|{{H}_{2}}(g),\,\,\,1bar|1\,M\,HCl(aq)|\]                                                 \[1M\,A{{g}^{+}}(aq)|Ag(s)\]
  done clear
  C)
  \[\operatorname{Pt}(s)|{{H}_{2}}(g),\,1bar|1M\,HCl(aq)|\]                                              \[AgCl(s)|Ag(s)\]
  done clear
  D)
  \[\Pr (s)|{{H}_{2}}(g),1bar|1\,M\,HCl(aq)]\]                                               \[Ag(s)|AgCl(s)\]
  done clear
  View Answer play_arrow

• question_answer80) If z is the number of atoms in the unit cell that represents the closest packing sequence... .A B C ABC..... the number of tetrahedral voids in the unit cell is equal to:
  A)
  Z                             
  done clear
  B)
         2Z                          
  done clear
  C)
  Z/2                                        
  done clear
  D)
  Z/4
  done clear
  View Answer play_arrow

• question_answer81) \[\Delta H_{f}^{o}(298K)\] of methanol is given by the chemical equation:
  A)
  \[C{{H}_{4}}(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}C{{H}_{3}}OH(g)\]
  done clear
  B)
  \[C(graphite)+\frac{1}{2}{{O}_{2}}(g)+2{{H}_{2}}(g)\xrightarrow{{}}\]\[C{{H}_{3}}OH(l)\]
  done clear
  C)
  \[C(diamond)+\frac{1}{2}{{O}_{2}}(g)+2{{H}_{2}}(g)\]\[\xrightarrow{{}}C{{H}_{3}}OH(l)\]
  done clear
  D)
  \[CO(g)+2{{H}_{2}}(g)\xrightarrow{{}}C{{H}_{3}}OH(l)\]
  done clear
  View Answer play_arrow

• question_answer82) An endothermic reaction with high activation energy for the forward reaction is given by the diagram:
  A)
                                            
  done clear
  B)
        
  done clear
  C)
                
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer83) When \[10\text{ }mL\] of \[0.1\text{ }M\] acetic acid \[(p{{K}_{a}}=5.0)\] is titrated against \[10\text{ }mL\] of  \[0.1\text{ }M\] ammonia solution \[(p{{K}_{a}}=5.0)\], the equivalence point occurs at pH:
  A)
  5.0                         
  done clear
  B)
         6.0                         
  done clear
  C)
  7.0                         
  done clear
  D)
         9.0
  done clear
  View Answer play_arrow

• question_answer84) The most probable radius (in pm) for finding the electron in \[H{{e}^{+}}\] is:
  A)
  \[0.0\]                  
  done clear
  B)
         \[52.9\]
  done clear
  C)
         \[26.5\]               
  done clear
  D)
         \[105.8\]
  done clear
  View Answer play_arrow

• question_answer85) For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, \[\Delta U\] and w corresponds to:
  A)
  \[\Delta U<0,w=0\] 
  done clear
  B)
         \[\Delta U<0,w<0\]
  done clear
  C)
         \[\Delta U>0,w=0\]  
  done clear
  D)
        \[\Delta U>0,w>0\]
  done clear
  View Answer play_arrow

• question_answer86) For reaction \[aA\to xP,\], when \[\text{ }\!\![\!\!\text{ A }\!\!]\!\!\text{ }=2.2\text{ }mM\], the rate was found to be \[2.4\text{ }mM\text{ }{{s}^{-1}}\]. On reducing concentration of A to half, the rate changes to \[0.6\text{ }mM\text{ }{{s}^{-1}}\]. The order of reaction with respect to A is:
  A)
  1.5                                         
  done clear
  B)
  2.0                         
  done clear
  C)
  2.5                         
  done clear
  D)
         3.0
  done clear
  View Answer play_arrow

• question_answer87) For reaction, \[2NOCl(g)\rightleftharpoons 2NO(g)+C{{l}_{2}}(g);{{K}_{c}}\] at \[{{427}^{o}}C\] is \[3\times {{10}^{-6}}L\,mo{{l}^{-1}}.\] The value of \[{{K}_{p}}\] is nearly:
  A)
  \[7.50\times {{10}^{-5}}\]            
  done clear
  B)
  \[2.50\times {{10}^{-5}}\]            
  done clear
  C)
         \[2.50\times {{10}^{-4}}\]    
  done clear
  D)
         \[1.72\times {{10}^{-4}}\]
  done clear
  View Answer play_arrow

• question_answer88) Which of the following graphs represent relation between initial concentration of reactants and half-life for third order reaction?
  A)
                         
  done clear
  B)
  
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer89) Among the following the strongest nucleophile is:
  A)
  \[{{C}_{2}}{{H}_{5}}SH\]
  done clear
  B)
         \[C{{H}_{3}}CO{{O}^{-}}\]           
  done clear
  C)
         \[C{{H}_{3}}N{{H}_{2}}\]    
  done clear
  D)
         \[NCCH_{2}^{-}\]
  done clear
  View Answer play_arrow

• question_answer90) The major product formed in the following reaction is: \[C{{H}_{3}}-\underset{H}{\mathop{\underset{|}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{2}}Br\xrightarrow[C{{H}_{3}}OH]{C{{H}_{3}}{{O}^{-}}}\]
  A)
  \[C{{H}_{3}}-\underset{H}{\mathop{\underset{|}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{2}}OC{{H}_{3}}\]
  done clear
  B)
  \[C{{H}_{3}}-\underset{OC{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}C{{H}_{3}}\]
  done clear
  C)
  \[C{{H}_{3}}-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\]
  done clear
  D)
  \[C{{H}_{3}}-\underset{OC{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer91) The major product obtained on treatment of \[C{{H}_{3}}C{{H}_{2}}CH(F)C{{H}_{3}}\] with \[C{{H}_{3}}{{O}^{-}}/C{{H}_{3}}OH\]is
  A)
  \[C{{H}_{3}}C{{H}_{2}}CH(OC{{H}_{3}})C{{H}_{3}}\]
  done clear
  B)
  \[C{{H}_{3}}CH=CHC{{H}_{3}}\]
  done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}CH=C{{H}_{2}}\]
  done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OC{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer92) Among the following the most stable compound is:
  A)
  cis-1, 2-cyclohexanediol
  done clear
  B)
  trans-1, 2-cyclohexanediol
  done clear
  C)
  cis-, 3-cyclohexenediol
  done clear
  D)
  trans-1, 3-cyclohexanediol
  done clear
  View Answer play_arrow

• question_answer93) 3-phenylpropene on reaction with \[HBr\] gives (as a major product):
  A)
  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}CH(Br)C{{H}_{3}}\]
  done clear
  B)
  \[{{C}_{6}}{{H}_{5}}CH(Br)C{{H}_{2}}C{{H}_{3}}\]
  done clear
  C)
  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Br\]
  done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OC{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer94) \[C{{H}_{3}}C{{O}_{2}}{{C}_{2}}{{H}_{5}}\] on reaction with sodium ethoxide in ethanol gives A, which on heating in the presence of acid gives B. Compound B is:
  A)
  \[C{{H}_{3}}COC{{H}_{2}}COOH\]
  done clear
  B)
  \[C{{H}_{3}}COC{{H}_{3}}\]
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer95) Among the following which one does not act as an intermediate in Hofmann rearrangement?
  A)
  \[RNCO\]        
  done clear
  B)
         \[RCON\]            
  done clear
  C)
         \[RCO\overset{\centerdot \centerdot }{\mathop{N}}\,HBr\]   
  done clear
  D)
         \[RNC\]
  done clear
  View Answer play_arrow

• question_answer96) Pyridine is less basic than triethylamine because:
  A)
  pyridine has aromatic character
  done clear
  B)
  nitrogen in pyridine is \[s{{p}^{2}}\] -hybridised
  done clear
  C)
  pyridine is a cyclic system
  done clear
  D)
  in pyridine, lone pair of nitrogen is delocalized
  done clear
  View Answer play_arrow

• question_answer97) Which one of the following biomolecules is insoluble in water?
  A)
  \[\alpha \]-keratin      
  done clear
  B)
         Haemoglobin
  done clear
  C)
                         Ribonuclease   
  done clear
  D)
         Adenine  
  done clear
  View Answer play_arrow

• question_answer98) Correct configuration of the following is:
  A)
  2R, 3S                   
  done clear
  B)
         IS, 2R    
  done clear
  C)
         1R, 2S                   
  done clear
  D)
         1R, 2R
  done clear
  View Answer play_arrow

• question_answer99) Which one of the following statements is true for protein synthesis (translation)?
  A)
  Amino acids are directly recognised by m-RNA
  done clear
  B)
  The third base of the codon is less specific
  done clear
  C)
  Only one codon codes for an amino acid
  done clear
  D)
  Every c-RNA molecule has more than one amino acid attachment
  done clear
  View Answer play_arrow

• question_answer100) \[{{C}_{6}}{{H}_{5}}CONHC{{H}_{3}}\] can be converted into \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}NHC{{H}_{3}}\] by :
  A)
  \[NaB{{H}_{4}}\]        
  done clear
  B)
         \[{{H}_{2}}-Pd/C\]
  done clear
  C)
                         \[LiAl{{H}_{4}}\]        
  done clear
  D)
         \[Zn-Hg/HCl\]
  done clear
  View Answer play_arrow

• question_answer101) Assertion: Reaction of \[S{{O}_{2}}\] and \[{{H}_{2}}S\] in the presence of \[F{{e}_{2}}{{O}_{3}}\] catalyst gives elemental sulphur. Reason:  \[S{{O}_{2}}\] is a reducing agent.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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:  \[SiF_{6}^{2-}\] is known but \[SiCl_{6}^{2-}\] is not. Reason: Size of fluorine is small and its lone pair of electrons interacts with d-orbitals of Si strongly.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Borax bead test is not suitable for Al (III). Reason:  \[A{{l}_{2}}{{O}_{3}}\] is insoluble in water.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Ozone is powerful oxidising agent in comparison to \[{{O}_{2}}\]. Reason: Ozone is diamagnetic but \[{{O}_{2}}\], is paramagnetic.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Potassium ferrocyanide is diamagnetic, whereas potassium ferricyanide is paramagnetic. Reason: Crystal field splitting in ferrocyanide ion is greater than that of ferricyanide ion.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Addition of \[N{{H}_{4}}OH\] to an aqueous solution of \[BaC{{l}_{2}}\] in the presence of \[N{{H}_{4}}Cl\] (excess) precipitates \[Ba{{(OH)}_{2}}\] Reason:  \[Ba{{(OH)}_{2}}\] is insoluble in water.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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:  \[SeC{{l}_{4}}\] does not have a tetrahedral structure. Reason: Se in \[SeC{{l}_{4}}\] has two lone pairs.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: The molecular weight of acetic acid determined by depression in freezing point method in benzene and water was found to be different. Reason: Water is polar and benzene is non-polar,                                       
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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:  Compressibility factor for hydrogen varies with pressure with positive slope at all pressures. Reason:  Even at low pressure, repulsive forces dominate hydrogen gas.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: First ionisation energy for nitrogen is lower than oxygen. Reason: Across a period effective nuclear charge decreases.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: \[{{B}_{2}}\] molecule is diamagnetic. Reason: The highest occupied molecular orbital is of a type.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Rate of hydrolysis of methyl chloride to methanol is higher in DMF than in water. Reason: Hydrolysis of methyl chloride follows second order kinetics.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Galvanised iron does not rust. Reason: Zinc has a more negative electrode potential than iron.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Extraction of iron metal from iron oxide ore is carried out by heating with coke. Reason: The reaction, \[F{{e}_{2}}{{O}_{3}}(s)\xrightarrow{{}}Fe(s)+\frac{3}{2}{{O}_{2}}(g)\] is a spontaneous process.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Rates of nitration of benzene and hexadeuterobenzene are different. Reason: \[C-H\] bond is stronger than \[C-D\] bond.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: t-butyl methyl ether is not prepared by the reaction of f-butyl bromide with sodium meth oxide. Reason: Sodium meth oxide is a strong nucleophile.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Maltose is a reducing sugar which gives two moles of D-glucose on hydrolysis. Reason: Maltose has a 1, 4-\[\beta \]-glycosidic linkage.                                           
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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:  \[p-{{O}_{2}}N-{{C}_{6}}{{H}_{5}}COC{{H}_{3}}\] is prepared by Friedel-Crafts acylation of nitrobenzene. Reason: Nitrobenzene easily undergoes electrophilic substitution reaction.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Alkyl isocyanides in acidified water give alkyl form amides. Reason: In isocyanides, carbon first acts as a nucleophile and then as an electrophile.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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: Cyclopentadienyl anion is much more stable than allyl anion. Reason: Cyclopentadienyl anion is aromatic in character.
  A)
  If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  done clear
  B)
  If both Assertion and Reason are true but Reason is not the correct explanation of 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) 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 Hydra
  done clear
  B)
  Epimorphosis     ? Replacement of old and dead erythrocytes by the new ones
  done clear
  C)
  Morphollaxis      ? 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 Planarian
  done clear
  View Answer play_arrow

• question_answer122) Which one of the following four secretions is correctly matched with its source, target and nature of action?
  A)
  Secretion                                            Source                                                  Target                                   Action Gastrin                                 Stomach lining                                   Oxyntic cells                       Production of HCl
  done clear
  B)
  Inhibin                                  Sertoli cells                                         Hypothalamus                   Inhibition of secretion of gonadotropin releasing hormone
  done clear
  C)
  Enterokinase                     Duodenum                                         Gall bladder                        Release of bile uice
  done clear
  D)
  Atrial Natriuretic                               Sinu Atrial Node                               Juxtaglomerular               Inhibition of release of renin Factor (ANF)                      (SAN) M-cells atria                          apparatus (JGA)
  done clear
  View Answer play_arrow

• question_answer123) Which one of the following four glands correctly matched with the accompanying description?
  A)
  Thyroid ? hyperactivity in young childra causes cretinism
  done clear
  B)
  Thymus ? starts undergoing atrophy after puberty
  done clear
  C)
  Parathyroid ? secretes parathormon which promotes movement of calcium iocs from blood into bones during calcification
  done clear
  D)
   Pancreas ? delta cells of the islets Langerhans secrete a hormone which stimulates glycolysis in liver
  done clear
  View Answer play_arrow

• question_answer124) Given below is a pedigree chart showing the inheritance of a certain sex-linked trait humans. The trait traced in the above pedigree chart is
  A)
  dominant X-linked
  done clear
  B)
  recessive X-linked
  done clear
  C)
  dominant Y-linked
  done clear
  D)
   recessive Y-linked
  done clear
  View Answer play_arrow

• question_answer125) A cross section at the midpoint of the middle piece of a human sperm will show:
  A)
  centriole, mitochondria and 9+2 arrangement of microtubules
  done clear
  B)
  centriole and mitochondria
  done clear
  C)
  mitochondria and 9+2 arrangement of micro tubules
  done clear
  D)
   9+2 arrangement of microtubules only
  done clear
  View Answer play_arrow

• question_answer126) Which one of the following is a correct statement?
  A)
  Bt in Bt-cotton indicates that it is a genetically modified organism produced through biotechnology
  done clear
  B)
  Somatic hybridization involves fusion of two complete plant cells carrying desired genes
  done clear
  C)
  The anticoagulant hirudin is being produced from transgenic Brassica napus seeds
  done clear
  D)
   Flavr Savr variety of tomato has enhanced the production of ethylene which improves its taste
  done clear
  View Answer play_arrow

• question_answer127) 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_answer128) Which one of the following         pairs of geographical areas shows maximum bio-diversity 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 Kerala and Punjab
  done clear
  D)
  Kerala and Punjab
  done clear
  View Answer play_arrow

• question_answer129) Genetic diversity in agricultural crops is threatened by:
  A)
  introduction of high yielding varieties
  done clear
  B)
  intensive use of fertilizers
  done clear
  C)
  extensive intercropping
  done clear
  D)
   intensive use of biopesticides
  done clear
  View Answer play_arrow

• question_answer130) One of the ex situ conservation methods for endangered species is:
  A)
  Wildlife sanctuaries
  done clear
  B)
  biosphere reserves
  done clear
  C)
  ciyopreservation
  done clear
  D)
   national parks
  done clear
  View Answer play_arrow

• question_answer131) 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_answer132) Two of the body parts which do not appear in MRI may be:
  A)
  molar teeth and eye lens
  done clear
  B)
  scapula and canines
  done clear
  C)
  ligaments and ribs
  done clear
  D)
   tendons and premolars
  done clear
  View Answer play_arrow

• question_answer133) A young drug addict used to show symptoms of depressed brain activity, feeling of calmness, relaxation and drowsiness. Possibly he was taking:
  A)
  amphetamine
  done clear
  B)
                        marijuana           
  done clear
  C)
        pethidine           
  done clear
  D)
         valium
  done clear
  View Answer play_arrow

• question_answer134) 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 chains
  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_answer135) Which one of the following events is correctly matched with the time period in a normal menstrual cycle?
  A)
  Release of egg ? 5th day
  done clear
  B)
  Endometrium regenerates ? 5-10 days
  done clear
  C)
  Endometrium secretes nutrients for implantation ? 11-18 days
  done clear
  D)
   Rise in progesterone level ? 1-15 days
  done clear
  View Answer play_arrow

• question_answer136) A tumour inducing plasmid widely used in the production of transgenic plant is that of:
  A)
  Escherichia coli
  done clear
  B)
  Bacillus thuringiensis
  done clear
  C)
  Staphylococcus aureus
  done clear
  D)
   Agrobacterium tumefaciens
  done clear
  View Answer play_arrow

• question_answer137) Which one of the following statement pertaining to pollutants is correct?
  A)
  DDT is a non-biodegradable pollutant
  done clear
  B)
  Excess fluoride in drinking water causes osteoporosis
  done clear
  C)
  Excess cadmium in drinking water causes black foot disease
  done clear
  D)
   Methylmercury in water may cause Itai Itai disease
  done clear
  View Answer play_arrow

• question_answer138) Which one of the following statements is correct with respect to salt water balance inside the body of living organisms?
  A)
  When water is not available camels do not produce urine but store urea in tissues
  done clear
  B)
  Salmon fish excretes lot of stored salt through gill membrane when in fresh water
  done clear
  C)
  Paramecium discharges concentrated salt solution by contractile vacuoles
  done clear
  D)
   The body fluids of freshwater animals are generally hypotonic to surrounding water
  done clear
  View Answer play_arrow

• question_answer139) The Cri-du-Chat syndrome is caused by change in chromosome structure involving:
  A)
  deletion              
  done clear
  B)
                        duplication         
  done clear
  C)
        inversion            
  done clear
  D)
         translocation
  done clear
  View Answer play_arrow

• question_answer140) The family containing mustard and its main characters are:
  A)
  Brassicaceae ? Tetramerous flowers, six stamens, bicarpellary gynoecium, siliqua type fruit
  done clear
  B)
  Brassicaceae ? Pentamerous flowers, many stamens, pentacarpellary gynoecium, capsule type fruit
  done clear
  C)
  Solanaceae ? Pentamerous flowers, five stamens, bicarpellary gynoecium berry type fruit
  done clear
  D)
   Poaceae ? Trimerous flowers, three stamens, monocarpellary gynoecium, caryopsis type of fruit
  done clear
  View Answer play_arrow

• question_answer141) Grain colour in wheat is determined by three pairs of polygene. Following the cross AABBCC (dark colour) x aabbcc (light colour), in F2 generation what proportion of the progeny is 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_answer142) Which one of the following statements pertaining to plant structure is correct?
  A)
  Cork lacks stomata but lenticels carry out transpiration
  done clear
  B)
  Passage cells help in transfer of food from cortex to phloem
  done clear
  C)
  Sieve tube elements possess cytoplasm but no nuclei
  done clear
  D)
   The shoot apical meristem has a quiescent centre
  done clear
  View Answer play_arrow

• question_answer143) When synapsis is complete all along the chromosome, the cell is said to have entered a stage called:
  A)
  zygotene            
  done clear
  B)
        pachytene         
  done clear
  C)
        diplotene           
  done clear
  D)
         diakinesis
  done clear
  View Answer play_arrow

• question_answer144) Primary source of allelic variation is:
  A)
  independent assortment
  done clear
  B)
  recombination
  done clear
  C)
  mutation
  done clear
  D)
   polyploidy
  done clear
  View Answer play_arrow

• question_answer145) Many cells function properly and divide mitotically even though they do not have:
  A)
  plasma membrane
  done clear
  B)
  cytoskeleton
  done clear
  C)
  mitochondria
  done clear
  D)
   plastids
  done clear
  View Answer play_arrow

• question_answer146) Three of the following statements regarding cell organelles are correct while one is wrong. Which one is wrong?
  A)
  Lysosomes are double membraned vesicles budded off from Golgi apparatus and contain digestive enzymes
  done clear
  B)
  Endoplasmic reticulum consists of a network of membranous tubules and helps in transport, synthesis and secretion
  done clear
  C)
  Leucoplasts are bound by two membranes, lack pigment but contain their own DNA and protein synthesizing machinery
  done clear
  D)
   Sphacrosomes are single membrane bound and are associated with synthesis and storage of lipids
  done clear
  View Answer play_arrow

• question_answer147) In which one of the following would you expect to find glyoxysomes?
  A)
  Endosperm of wheat
  done clear
  B)
  Endosperm of castor
  done clear
  C)
  Palisade cells in leaf
  done clear
  D)
   Root hairs
  done clear
  View Answer play_arrow

• question_answer148) Which one of the following correctly represents an organism and its ecological niche?
  A)
  Vallisneria and pond
  done clear
  B)
  Desert locust (Scistocerca) and desert
  done clear
  C)
  Plant lice (aphids) and leaf
  done clear
  D)
   Vultures and dense forest
  done clear
  View Answer play_arrow

• question_answer149) Given below is one of the types of ecological pyramids. This type represents:
  A)
  pyramid of numbers in a grassland
  done clear
  B)
  pyramid of biomass in a fallow land
  done clear
  C)
  pyramid of biomass in a lake
  done clear
  D)
   energy pyramid in a spring
  done clear
  View Answer play_arrow

• question_answer150) The given graph shows the effect of substrate concentration on the rate of reaction of the eyzyme 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 the 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_answer151) Which one of the following groups of structures/organs have similar function?
  A)
  Typhlosole in earthworm, intestinal villi in rat and contractile vacuole in Amoeba
  done clear
  B)
  Nephridia in earthworm, Malpighian tubules in cockroach and urinary tubules in rat
  done clear
  C)
  Antennae of cockroach, tympanum of frog and clitellum of earthworm
  done clear
  D)
   Incisors of rat, gizzard (proventriculus) of cockroach and tube feet of starfish
  done clear
  View Answer play_arrow

• question_answer152) Autopolyploids (numeric or quantitative polyploids or intra specific polyploids) like ferns, garden plants, gram, maize, rice, banana, grapes, apple etc., show:
  A)
  increased gene dosage
  done clear
  B)
   gigas effect and seedless fruits
  done clear
  C)
   more yields and better adaptation
  done clear
  D)
   all of the above
  done clear
  View Answer play_arrow

• question_answer153) Electroporation procedure involves:
  A)
  fast passage of food through sieve pores in phloem elements with the help of electric stimulation
  done clear
  B)
  opening of stomatal pores during night by artificial light
  done clear
  C)
  making transient pores in the cell membrane to introduce gene constructs
  done clear
  D)
   purification of saline water with the help of a membrane system
  done clear
  View Answer play_arrow

• question_answer154) Somaclonal variation appears in:
  A)
   organisms produced through somatic hybridization
  done clear
  B)
   plants growing in highly polluted conditions
  done clear
  C)
   apomictic plants
  done clear
  D)
   tissue culture raised plants
  done clear
  View Answer play_arrow

• question_answer155) 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 \[2\,\mu /g\] diet is the optimum level
  done clear
  D)
  growth of khapra beetle in inhibited when cholesterol concentration exceeds \[5\,\mu /g\] diet
  done clear
  View Answer play_arrow

• question_answer156) Which one of the following is correct matching of a plant, its habit and the forest type where it normally occurs?
  A)
  Prosopis, tree, scrub
  done clear
  B)
  Saccharum officinarum, grass, forest
  done clear
  C)
  Shorea robusta, herb, tropical rain forest
  done clear
  D)
   Acacia catechu, tree, coniferous forest
  done clear
  View Answer play_arrow

• question_answer157) C-DNA probes are copied from the messenger RNA molecules with the help of:
  A)
  restriction enzymes
  done clear
  B)
  reverse transcriptase
  done clear
  C)
  DNA polymerase
  done clear
  D)
   adenosine deaminase
  done clear
  View Answer play_arrow

• question_answer158) Gibberellins can promote seed germination because of their influence on:
  A)
  rate of cell division
  done clear
  B)
  production of hydrolyzing enzymes
  done clear
  C)
  synthesis of abscisic acid
  done clear
  D)
   absorption of water through hard seed coat
  done clear
  View Answer play_arrow

• question_answer159) Which one of the following features is common in silverfish, scorpion, dragonfly and prawn?
  A)
  Three pairs of legs and segmented body
  done clear
  B)
  Chitinous cuticle and two pairs of antennae
  done clear
  C)
  Jointed appendages and chitinous exoskeleton
  done clear
  D)
   Cephalothorax and tracheae
  done clear
  View Answer play_arrow

• question_answer160) Double fertilization involves:
  A)
  fertilization of the egg by two male gametes
  done clear
  B)
  fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
  done clear
  C)
  fertilization of the egg and the central cell by two sperms brought by different pollen tubes
  done clear
  D)
   fertilization of the egg and the central cell by two sperms brought by the same pollen tube
  done clear
  View Answer play_arrow

• question_answer161) Assertion: Senescence is the time when age associated defects are manifested. Reason: Certain genes may be undergoing sequential switching on and off during ones life.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer162) Assertion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryotes). 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.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer163) Assertion: Methane component of greenhouse gases contributing to global warming is about 20 per cent. Reason: Introduction of multi-point fuel injection engines in automobiles has decreased methane content in the exhausts.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer164) Assertion: A suspended particulate matter (SPM) is an important pollutant released by diesel vehicles. Reason: Catalytic converters greatly reduce pollution caused by automobiles.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer165) 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.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer166) Assertion: Organ transplantation patients are given immunosuppressive drugs. Reason: Transplanted tissue has antigens which stimulate the specific immune response u; the recipient.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer167) 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.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer168) Assertion:           In humans, the gamete contrtibuted by the male determines whether the child produced will be male or female. Reason: Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on X-chromosome and some on Y-chromosome.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer169) Assertion: Mitochondria and chloroplasts are semiautonomous organelles. Reason: They are formed by division of pre-existing organelles as well as contain DNA but lack protein synthesizing machinery.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer170) Assertion: Replication and transcription occur in the nucleus but translation occurs in the cytoplasms. 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.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer171) Assertion: The fungi are widespread in distribution and they even live on or inside other plants and animals. Reason: Fungi are able to grow anywhere on land, water or on other organisms because they have a variety of pigments, including chlorophyll, carotenoids fucoxanthin and phycoerythrin.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer172) Assertion: \[{{C}_{4}}\] photosynthetic pathway is more efficient than the \[{{C}_{3}}\] pathway. Reason: Photorespiration is suppressed in \[{{C}_{4}}\] plants.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer173) Assertion: Presently, the global atmosphere is warming up. Reason: The depletion of stratospheric ozone layer has resulted in increase in ultraviolet radiations reaching the 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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer174) 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.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer175) Assertion:           Comparative biochemistry provides a strong evidence in favor of common ancestry of living beings. Reason: Genetic code is universal.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer176) Assertion: Darwins finches show a variety of beaks suited for eating large seeds, flying insects and cactus seeds. Reason: Ancestral seed-eating stock of Darwins finches radiated out from South American mainland to different geographical areas of the Galapagos Islands, where they found competitor-free new habitates.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer177) Assertion: The atmospheric concentration of \[C{{O}_{2}}\] at which photosynthesis just compensates for respiration is referred to as \[C{{O}_{2}}\] compensation point. Reason: The \[C{{O}_{2}}\] compensation point is reached when the amount of \[C{{O}_{2}}\] uptake is less than that generated through respiration because the level of \[C{{O}_{2}}\] in the atmosphere is more than that required for achieving \[C{{O}_{2}}\] compensation point.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer178) Assertion: The sex ratio of Kerala is highest in India. Reason: In countries like India the population is increasing at a rapid rate.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer179) Assertion: The duck-billed platypus and the spiny ant-eater, both are egg-laying animals yet they are grouped under mammals. Reason: Both the them have seven cervical vertebrae and 12 pairs of cranial nerves.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer180) Assertion: Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse crops. Reason: A gene incorporated in the bacterial chromosomal genome-gets automatically transferred to the crop with which the bacterium is associated.
  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 statement but Reason is false.
  done clear
  D)
   If both Assertion and Reason are false statements.
  done clear
  View Answer play_arrow

• question_answer181) Brahmo Samaj was founded by:
  A)
   Devendra Nath Tagore
  done clear
  B)
          Keshav Chandra Sen
  done clear
  C)
          Raja Ram Mohan Roy
  done clear
  D)
          Annie Besant
  done clear
  View Answer play_arrow

• question_answer182) Who was the first woman ruler of India?
  A)
   Raziya Sultan    
  done clear
  B)
                          Noor Jahan       
  done clear
  C)
                          Chand Biwi        
  done clear
  D)
                          Durga Devi
  done clear
  View Answer play_arrow

• question_answer183) Who were the first to issue gold coins in India?
  A)
   The Kushans    
  done clear
  B)
                          The Guptas       
  done clear
  C)
                          The Mauryans 
  done clear
  D)
                          The Indo Greeks
  done clear
  View Answer play_arrow

• question_answer184) In which space Shuttle Kalpana Chawla killed?
  A)
   Discovery          
  done clear
  B)
                          Columbia           
  done clear
  C)
                          Sputnik                               
  done clear
  D)
                          None of the above
  done clear
  View Answer play_arrow

• question_answer185) The Planning Commission was set up in:
  A)
   January, 1950
  done clear
  B)
                                          March, 1950     
  done clear
  C)
                          January, 1952   
  done clear
  D)
                          March, 1952
  done clear
  View Answer play_arrow

• question_answer186) Ascorbic acid is the chemical name of:
  A)
   vitamin A
  done clear
  B)
                                          vitamin B           
  done clear
  C)
          vitamin C           
  done clear
  D)
                          vitamin D
  done clear
  View Answer play_arrow

• question_answer187) The chemical formulae of Plaster of Paris is:
  A)
   \[CaS{{O}_{4}}.2{{H}_{2}}O\]
  done clear
  B)
                                          \[Ca{{(OH)}_{2}}\]              
  done clear
  C)
                                                          \[CaS{{O}_{4}}.1/2{{H}_{2}}O\]
  done clear
  D)
                          \[{{C}_{2}}{{H}_{5}}OH\]                                             
  done clear
  View Answer play_arrow

• question_answer188) How many spokes are in Indian National Flag?
  A)
   22         
  done clear
  B)
                                          24                         
  done clear
  C)
                          26                         
  done clear
  D)
                          28
  done clear
  View Answer play_arrow

• question_answer189) Who was elected as the permanent President of constituent assembly?
  A)
   Dr. Sachchidanand Sinha
  done clear
  B)
          Dr. Rajendra Prasad
  done clear
  C)
          Dr. B.R. Ambedkar
  done clear
  D)
          C. Rajgopalachari
  done clear
  View Answer play_arrow

• question_answer190) How many articles and schedule are there in originally constitution?
  A)
   391 articles and 7 schedules
  done clear
  B)
          395 articles and 8 schedules
  done clear
  C)
          400 articles and 10 schedules
  done clear
  D)
          444 articles and 12 schedules
  done clear
  View Answer play_arrow

• question_answer191) The Tenure of first planning holiday was:
  A)
   1964-1967
  done clear
  B)
                                                          965- 1968
  done clear
  C)
          1966-1969          
  done clear
  D)
                          1978-1981
  done clear
  View Answer play_arrow

• question_answer192) Who was the first Indian to win Nobel Prize?
  A)
   Mother Terresa              
  done clear
  B)
                          C.V. Raman
  done clear
  C)
          Ravindra Nath Tagore  
  done clear
  D)
          Amartya Sen
  done clear
  View Answer play_arrow

• question_answer193) Where is National Defence Academy situated ?
  A)
   New Delhi
  done clear
  B)
                                          Khadakvasla
  done clear
  C)
          Dehradun          
  done clear
  D)
                          Pune
  done clear
  View Answer play_arrow

• question_answer194) Which river is called Bengals Sorrow?
  A)
   Hughli                 
  done clear
  B)
                          Ganga                 
  done clear
  C)
                          Damodar           
  done clear
  D)
                          Koshi
  done clear
  View Answer play_arrow

• question_answer195) Maoris are:
  A)
   inhabitants of New Zeeland
  done clear
  B)
          inhabitants of Hungary
  done clear
  C)
          inhabitants of North America
  done clear
  D)
          cinhabitants of North-West Asia
  done clear
  View Answer play_arrow

• question_answer196) Oldest religious text in the world is:
  A)
   Rig Veda            
  done clear
  B)
                                          Sama Veda       
  done clear
  C)
                                          Yajur Veda        
  done clear
  D)
                          Atharva Veda
  done clear
  View Answer play_arrow

• question_answer197) Chittaranjan is famous for the:
  A)
   railway coaches              
  done clear
  B)
                          locomotives     
  done clear
  C)
                          iron and steel  
  done clear
  D)
                          heavy machinery
  done clear
  View Answer play_arrow

• question_answer198) Who is the inventor of Insulin?
  A)
   Lord Lister
  done clear
  B)
                                          Jonos Salk         
  done clear
  C)
                          Ronald Ross      
  done clear
  D)
                          Banting and Best
  done clear
  View Answer play_arrow

• question_answer199) Who is the Author of An Area of Darkness?
  A)
   Nirad C. Choudhari        
  done clear
  B)
          Vikram Seth     
  done clear
  C)
                          V.S. Naipaul      
  done clear
  D)
                          B.C. Chatterjee
  done clear
  View Answer play_arrow

• question_answer200) World Trade Organization established in:
  A)
   1954
  done clear
  B)
                                                          1988                     
  done clear
  C)
          1994                     
  done clear
  D)
                          1995
  done clear
  View Answer play_arrow