Solved papers for MGIMS WARDHA MGIMS WARDHA Solved Paper-2014

done MGIMS WARDHA Solved Paper-2014 Total Questions - 170

• question_answer1) Two particles A and B of masses m and 2m have charges\[q\]and\[2q\]respectively. Both particles moving with velocities\[{{\upsilon }_{1}}\]and\[{{\upsilon }_{2}}\] respectively in the same direction and   enter the same magnetic field B acting normally to their direction of motion. If the two forces\[{{F}_{A}}\]and\[{{F}_{B}}\]acting on them are in the ratio of\[1:2,\] the ratio of their velocities is
  A)
   \[2:1\]                                 
  done clear
  B)
   \[3:2\]
  done clear
  C)
   \[2:3\]                                 
  done clear
  D)
   \[1:1\]
  done clear
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• question_answer2) A narrow beam of protons and deuterons, each having the same momentum, enters a region of uniform magnetic field directed perpendicular to their direction of momentum. The ratio of the radii of the circular paths described by them is
  A)
   \[2:5\]                                 
  done clear
  B)
   \[3:2\]
  done clear
  C)
   \[2:3\]                                 
  done clear
  D)
   \[1:1\]
  done clear
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• question_answer3) A horizontal overhead power line carries a current of, 90 A in east to west direction. The magnitude and direction of the magnetic field due to the current 1.5m below the line is
  A)
  \[2.5\times {{10}^{-5}}T\]towards north
  done clear
  B)
   \[3\times {{10}^{-5}}T\] towards east
  done clear
  C)
   \[1.2\times {{10}^{-5}}T\]towards south
  done clear
  D)
   \[1\times {{10}^{-5}}T\] towards west
  done clear
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• question_answer4) A galvanometer has a resistance of\[30\,\Omega \]. It gives full scale deflection with a current of 2mA. Calculate, the value of the resistance needed to convert it into an ammeter of range 0-0.3 A. The value of the resistance needed to convert galvanometer into ammeter
  A)
   \[0.2\,\,\Omega \]                                        
  done clear
  B)
   \[0.3\,\,\Omega \]
  done clear
  C)
   \[0.4\,\,\Omega \]                        
  done clear
  D)
   \[0.52\,\,\Omega \]
  done clear
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• question_answer5) A tank is filled with water to a height of 12.4 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.3 cm. If water is replaced by a liquid of refractive index 1.6 upto the same height, by what distance would the microscope have to be moved to focus on the needle again
  A)
   4cm                                      
  done clear
  B)
   3cm
  done clear
  C)
   2.18 cm               
  done clear
  D)
   2.05 cm
  done clear
  E)
   None of these above
  done clear
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• question_answer6) A ray of light falls on a   transparent, right-angled isosceles prism made from a glass of refractive index\[\sqrt{2}\]. The incident ray falls normally on one of the equal sides of this prism. The ray will suffer
  A)
   total internal reflection
  done clear
  B)
   Interference
  done clear
  C)
   refraction with angle of refraction\[90{}^\circ \]
  done clear
  D)
   None of the above                      
  done clear
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• question_answer7) The magnifying power of a telescope in its normal adjustment is 20. If the length of the telescope is 105 cm in this adjustment, the focal length of the objective lens is
  A)
   100cm                                 
  done clear
  B)
   5cm
  done clear
  C)
   80cm                                   
  done clear
  D)
   95cm
  done clear
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• question_answer8) Two convex lenses of same focal lengths but of aperture\[{{A}_{1}}\]and\[{{A}_{2}}\]\[({{A}_{2}}<{{A}_{1}}),\]are used as the objective lenses in two astronomical telescopes having identical eye-pieces. The ratio of their resolving powers is
  A)
   \[\frac{{{A}_{1}}}{{{A}_{2}}}\]                                  
  done clear
  B)
   \[1:1\]
  done clear
  C)
   \[\frac{{{A}_{2}}}{{{A}_{1}}}\]                                  
  done clear
  D)
   data insufficient
  done clear
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• question_answer9) A beam of light converges at a point P. A concave lens of focal length 16 cm is placed in the path of this beam 12 cm from P. The location of the point, from the lens, at which the beam would now converge is
  A)
   48 cm                  
  done clear
  B)
   45 cm
  done clear
  C)
   80 cm                  
  done clear
  D)
   90 cm
  done clear
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• question_answer10) A nucleus undergoes \[\beta -\]decay. The mass number and atomic number change as
  A)
   mass number and atomic number both increases
  done clear
  B)
   mass number remain same and atomic number increases
  done clear
  C)
   mass number increases and atomic number remain same
  done clear
  D)
   mass number and atomic number both decreases
  done clear
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• question_answer11) The graph given below showing the variation of stopping potential with the frequency of incident   radiation   for   two   different photosensitive   materials   having   work functions \[{{W}_{1}}\]and \[{{W}_{2}}({{W}_{1}}<{{W}_{2}})\] The slope of graph showing the variation of stopping potential with the frequency of incident radiation gives the value of
  A)
   h/e where, h is Plancks constant and e electronic charge
  done clear
  B)
   h i.e., Plancks constant
  done clear
  C)
   e i.e., electronic charge
  done clear
  D)
   None of the above
  done clear
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• question_answer12) Rain drops are spherical in shape, because of
  A)
   surface tension
  done clear
  B)
   capillarity
  done clear
  C)
   downward motion
  done clear
  D)
   acceleration due to gravity
  done clear
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• question_answer13) In Youngs  double     slit experiment, monochromatic light of wavelength 600 nm illuminates the pair of slits and produces an interference pattern in which two consecutive bright fringes are separated by 10 mm. Another source of monochromatic light produces the interference pattern in which of the two consecutive bright fringes are separated by 8 mm. The wavelength of light from the second source is
  A)
   448 nm               
  done clear
  B)
   450 nm
  done clear
  C)
   480 nm               
  done clear
  D)
   580 nm
  done clear
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• question_answer14) Light passes through two polaroids\[{{P}_{1}}\]and \[{{P}_{2}}\] with pass axis of \[{{P}_{2}}\]making an angle 6 with the pass axis of \[{{P}_{1}}\]. That value of 9 for which the intensity of emergent light is zero.
  A)
   \[45{}^\circ \]                  
  done clear
  B)
   \[90{}^\circ \]
  done clear
  C)
   \[30{}^\circ \]                  
  done clear
  D)
   \[60{}^\circ \]
  done clear
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• question_answer15) If the angle between the axis of polarizer and the analyser is 45 degree, the ratio of the intensities  of original  light  and  the transmitted light after passing through the analyser is
  A)
   \[2:1\]                                 
  done clear
  B)
   \[1:2\]
  done clear
  C)
   \[2:3\]                                 
  done clear
  D)
   \[1:1\]
  done clear
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• question_answer16) The given circuit diagram shows a series L-C-R circuit connected to a variable frequency 230 V, source: \[L=5.0\text{ }H,\text{ }C=80\text{ }\mu F,\text{ }R=40\,\Omega \] The frequency and impedance of the circuit at the resonating frequency are
  A)
   50 rad/s and 5.75A         
  done clear
  B)
   1000 rad/s and 3A
  done clear
  C)
   10 rad/s and 2A               
  done clear
  D)
   20 rad/s and 4A
  done clear
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• question_answer17) The instantaneous current and voltage of an AC circuit are given by \[I=10sin\text{ }300t\text{ }A\text{ }and\text{ }V=200\text{ }sin\text{ }300t\text{ }V\]. The power dissipation in the circuit is
  A)
   500 W                  
  done clear
  B)
   2000 W
  done clear
  C)
   1000W                
  done clear
  D)
   100W
  done clear
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• question_answer18) In a series L-C-R circuit, the voltages across an inductor, a capacitor and a resistor are 30V, 30V and 60 V respectively. The phase difference between the applied voltage and the current in the circuit is
  A)
   \[0{}^\circ \]                                     
  done clear
  B)
   \[90{}^\circ \]
  done clear
  C)
   \[30{}^\circ \]                                  
  done clear
  D)
   \[60{}^\circ \]
  done clear
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• question_answer19) An AC source, of voltage\[V={{V}_{m}}\sin \omega t,\]is applied across a series RC circuit in which the capacitive impedance is a times the resistance in the circuit. The value of the power factor of the circuit is
  A)
   \[0\]                                    
  done clear
  B)
   \[1/\sqrt{1+{{a}^{2}}}\]
  done clear
  C)
   \[\sqrt{1+{{a}^{2}}}\]                   
  done clear
  D)
   None of these
  done clear
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• question_answer20) Current in a circuit falls steadily from 2.0 A to 0.0 A in 10 ms. If an average emf of 200 V is induced, then the self-inductance of the circuit is
  A)
   1 H                                        
  done clear
  B)
   2H
  done clear
  C)
   1/2H                                    
  done clear
  D)
   2H     
  done clear
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• question_answer21) Volume versus temperature graphs for a given mass of an ideal gas are shown in figure. At two different values of constant pressure. What can be inferred about relation between\[{{p}_{1}}\]and \[{{P}_{2}}\]?
  A)
   \[{{p}_{1}}>{{p}_{2}}\]                 
  done clear
  B)
   \[{{p}_{1}}={{p}_{2}}\]
  done clear
  C)
   \[{{p}_{1}}<{{p}_{2}}\]                 
  done clear
  D)
   data is insufficient
  done clear
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• question_answer22) A rectangular coil of area A, having number of turns Nis rotated at/revolutions per second in a uniform magnetic field B. The maximum emf induced in the coil is
  A)
   \[2\pi fNB\]                      
  done clear
  B)
   \[2fNBA\]
  done clear
  C)
   \[2\pi fBA\]                      
  done clear
  D)
   \[2\pi fNBA\]
  done clear
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• question_answer23) The polarity of the capacitor in the situation described by Fig.
  A)
   Plate A and plate B both positive
  done clear
  B)
   Plate A negative and plate B positive
  done clear
  C)
   Plate A positive and plate B negative
  done clear
  D)
   Plate A and plate B both negative
  done clear
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• question_answer24) A step down transformer operated on a 2.5 kV line. It supplies a load with 20 A. The ratio of the primary winding to the secondary is\[10:1\]. If the transformer is 90% efficient, the power output is
  A)
   \[4.5\times {{10}^{4}}W\]                          
  done clear
  B)
   \[4.5\times {{10}^{2}}W\]
  done clear
  C)
   \[6\times {{10}^{4}}W\]                              
  done clear
  D)
   \[6\times {{10}^{4}}W\]
  done clear
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• question_answer25) A step down transformer operated on a 2.5 kV line. It supplies a load with 20 A. The ratio of the primary winding to the secondary is\[10:1\]. If the transformer is 90% efficient, the voltage in the secondary is
  A)
   225V                                    
  done clear
  B)
   550V
  done clear
  C)
   250V                                    
  done clear
  D)
   200V
  done clear
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• question_answer26) When a given coil is connected to a 200V, 50 Hz AC source, 1 A current flows in the circuit. The inductive reactance of the coil used is
  A)
   \[50\sqrt{3}\Omega \]                                 
  done clear
  B)
   \[200\sqrt{3}\Omega \]
  done clear
  C)
   \[150\sqrt{3}\Omega \]              
  done clear
  D)
   \[100\sqrt{3}\Omega \]
  done clear
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• question_answer27) When a given coil of ohmic resistance\[100\,\Omega \]and inductive reactance\[100\sqrt{3}\,\Omega \]is connected to a 200 V DC source, the current flows in the circuit is
  A)
   1A                                         
  done clear
  B)
   1.5 A
  done clear
  C)
   2A                                         
  done clear
  D)
   \[100\sqrt{3}\,\Omega \]
  done clear
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• question_answer28) If the position of a moving particle, with respect to time be, \[x(t)=1+t-{{t}^{2}}\]. then, the acceleration of particle is given by (assume all measurements in MKS)
  A)
   \[-1\text{ }m{{s}^{-2}}\]             
  done clear
  B)
   \[-1.5\text{ }m{{s}^{-2}}\]
  done clear
  C)
   \[-2\text{ }m{{s}^{-2}}\]                             
  done clear
  D)
   \[-2.5\text{ }m{{s}^{-2}}\]
  done clear
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• question_answer29) A ball is dropped from a tower of height h. The duration\[({{t}_{0}})\]of motion, when it reaches bottom of the tower is given by
  A)
   \[\sqrt{\frac{2h}{g}}\]                  
  done clear
  B)
   \[\sqrt{\frac{h}{g}}\]
  done clear
  C)
   \[2\sqrt{\frac{h}{g}}\]                  
  done clear
  D)
   \[4\sqrt{\frac{h}{g}}\]
  done clear
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• question_answer30) For the given position-time\[(x-t)\]graph , the interval in which velocity is zero, is
  A)
   \[({{t}_{3}}-{{t}_{1}})\]                
  done clear
  B)
   \[({{t}_{3}}-{{t}_{2}})\]
  done clear
  C)
   \[({{t}_{5}}-{{t}_{4}})\]                
  done clear
  D)
   \[({{t}_{5}}-{{t}_{2}})\]
  done clear
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• question_answer31) A person travelling on a straight line moves with an uniform velocity\[{{\upsilon }_{1}}\]for some time and with uniform velocity\[{{\upsilon }_{2}}\]for the next equal interval of time. The average velocity for the entire duration is
  A)
   \[({{v}_{1}}+{{v}_{2}})\]                              
  done clear
  B)
   \[({{v}_{1}}+{{v}_{2}})/2\]
  done clear
  C)
   \[({{v}_{1}}+{{v}_{2}})/3\]                          
  done clear
  D)
   \[(2{{v}_{1}}+3{{v}_{2}})/3\]
  done clear
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• question_answer32) A particle moves along the\[x-\]axis as \[x=u(t-2s)+a{{(t-2s)}^{2}}\]. The initial velocity of the particle is
  A)
   \[u-2a\]              
  done clear
  B)
   \[u-4a\]
  done clear
  C)
   \[2a-u\]              
  done clear
  D)
   \[2a-3u\]
  done clear
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• question_answer33) The centre of mass of three particles of mass \[{{m}_{1}}=1.0\,kg,{{m}_{2}}=2.0\,kg,\]and\[{{m}_{2}}=3.0\,kg\]at the comers of an equilateral triangle 1.0 m on a side, as shown in figure
  A)
   \[\left( \frac{7}{12}m,\frac{\sqrt{3}}{4}m \right)\]          
  done clear
  B)
   \[\left( \frac{5}{12}m,\frac{\sqrt{3}}{5}m \right)\]
  done clear
  C)
   \[\left( \frac{5}{13}m,\frac{\sqrt{3}}{5}m \right)\]          
  done clear
  D)
   \[\left( \frac{8}{12}m,\frac{\sqrt{3}}{5}m \right)\]
  done clear
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• question_answer34) A system consists of two point masses M and\[m(<M)\]. The centre of mass of the system is
  A)
   at the middle of m and M
  done clear
  B)
   nearer to M
  done clear
  C)
   nearer to m
  done clear
  D)
   at the position of large mass
  done clear
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• question_answer35) A ball is projected horizontally with a velocity of 5 m/s from the top of a building 19.6 m high. flow long will the ball take to hit the ground?
  A)
   \[\sqrt{2}s\]                                     
  done clear
  B)
   2s
  done clear
  C)
   \[\sqrt{3}s\]                                     
  done clear
  D)
   3s
  done clear
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• question_answer36) A body of mass 3 kg is acted on by a force which varies as shown in the graph. The momentum acquired is given by
  A)
   zero                                     
  done clear
  B)
   \[5\text{ }N-s\]
  done clear
  C)
   \[30N-s\]                           
  done clear
  D)
   \[50\text{ }N-s\]
  done clear
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• question_answer37) Boyles law is applicable for an
  A)
   adiabatic process           
  done clear
  B)
   isothermal process
  done clear
  C)
   isobaric process              
  done clear
  D)
   isochoric process
  done clear
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• question_answer38) Two perfectly elastic particles A and B of equal masses travelling along the line joining, them with velocity 15 m/s and 20 m/s respectively collide. Their velocities after the elastic collision will be (in m/s) respectively.
  A)
   0 and 25             
  done clear
  B)
   5 and 20
  done clear
  C)
   10 and 15           
  done clear
  D)
   20 and 15
  done clear
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• question_answer39) A bomb of mass 16 kg at rest explodes into two pieces of masses 4 kg and 12 kg. The velocity of the 12 kg mass is\[4\text{ }m{{s}^{-1}}\]. The kinetic energy of the other mass is
  A)
   192J                                     
  done clear
  B)
   96J
  done clear
  C)
   144 J                                    
  done clear
  D)
   288J
  done clear
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• question_answer40) Two particles of masses m^ and 7712 in projectile motion have velocities\[{{\upsilon }_{1}}\]and\[{{\upsilon }_{2}}({{\upsilon }_{1}}<{{\upsilon }_{2}})\]respectively at\[t=0\]. They collide at time\[{{t}_{0}}\]Their velocities become\[\overline{\upsilon }{{}_{1}}\]and\[\overline{\upsilon }{{}_{2}}\]at time\[2{{t}_{0}}\]while still moving in it. The value of \[|({{m}_{1}}\overline{\upsilon }+{{m}_{2}}\overline{\upsilon }{{}_{2}})-({{m}_{1}}{{\overline{\upsilon }}_{1}}+{{m}_{2}}{{\overline{\upsilon }}_{2}})|\]is
  A)
   zero                                     
  done clear
  B)
   \[({{m}_{1}}+{{m}_{2}})g{{t}_{0}}\]
  done clear
  C)
   \[2({{m}_{1}}+{{m}_{2}})g{{t}_{0}}\]     
  done clear
  D)
   \[\frac{1}{2}({{m}_{1}}+{{m}_{2}})g{{t}_{0}}\]
  done clear
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• question_answer41) If the equation for the displacement of a particle moving on a circular path is given by \[\theta =2{{t}^{3}}+0.5,\]where\[\theta \]is in radian and t in second, then the angular velocity of the particle after 2 s from its start is
  A)
   8 rad/s                
  done clear
  B)
   12 rad/s
  done clear
  C)
   24 rad/s              
  done clear
  D)
   36 rad/s
  done clear
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• question_answer42) A block of mass m is placed on a smooth inclined plane of inclination with the horizontal. The force exerted by the plane on the block has a magnitude
  A)
   \[mg\]                                
  done clear
  B)
   \[mg/cos\theta \]
  done clear
  C)
   \[mg\text{ }cos\text{ }\theta \]              
  done clear
  D)
   \[mg\tan \theta \]
  done clear
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• question_answer43) A string of negligible mass going over a clamped pulley of mass m supports a block of mass M as shown in the figure. The force on the pulley by the clamp is given by
  A)
   \[\sqrt{2}Mg\]
  done clear
  B)
   \[\sqrt{2}mg\]
  done clear
  C)
   \[\sqrt{{{(M+m)}^{2}}+{{m}^{2}}g}\]
  done clear
  D)
   \[\sqrt{{{(M+m)}^{2}}+{{M}^{2}})g}\]
  done clear
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• question_answer44) The moment of inertia of a uniform ring of mass\[m\]and radius r about an axis,\[AA\] touching the ring tangentially and lying in the plane of the ring only, as shown in figure , is
  A)
   \[\frac{5}{4}m{{r}^{2}}\]                             
  done clear
  B)
   \[\frac{5}{2}m{{r}^{2}}\]  
  done clear
  C)
   \[\frac{1}{4}m{{r}^{2}}\]                             
  done clear
  D)
   \[\frac{1}{2}m{{r}^{2}}\]
  done clear
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• question_answer45) If the disc shown in figure has mass M and it is free to rotate about its symmetrical axis passing through 0, its angular acceleration is
  A)
   \[\frac{6F}{MR}\]                           
  done clear
  B)
   \[\frac{3F}{MR}\]
  done clear
  C)
   \[\frac{6F}{5MR}\]                        
  done clear
  D)
   \[\frac{4F}{MR}\]
  done clear
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• question_answer46) A small ball released from rest from a height h on a smooth surface of varying inclination, as shown in figure. The speed of the ball when it reaches the horizontal part of the surface is
  A)
   \[{{v}_{0}}=\sqrt{gh}\]                
  done clear
  B)
   \[{{v}_{0}}=\sqrt{5gh}\]
  done clear
  C)
   \[{{v}_{0}}=\sqrt{2gh}\]              
  done clear
  D)
   None of these
  done clear
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• question_answer47) Two masses\[{{m}_{1}}=5\text{ }kg\]and\[{{m}_{2}}=4.8\text{ }kg\] tied to a string are hanging over a light frictionless pulley. What is the acceleration of the masses when lift is free to move?
  A)
   \[0.2\text{ }m/{{s}^{2}}\]                           
  done clear
  B)
   \[9.8m/{{s}^{2}}\]
  done clear
  C)
   \[5m/{{s}^{2}}\]            
  done clear
  D)
   \[4.8\text{ }m/{{s}^{2}}\]
  done clear
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• question_answer48) A particle is acted upon by a conservative force \[F=(7\hat{i}-6\hat{j})N\](no other force is acting on the particle). Under the influence of this force, particle moves from (0,0) to\[(-3w,4w),\]then
  A)
   work done by the force is \[3J\]
  done clear
  B)
   work done by the force is \[-45\text{ }J\]
  done clear
  C)
   at (0, 0) speed of the particle must be zero
  done clear
  D)
   at (0, 0) speed of the particle must not be zero
  done clear
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• question_answer49) A full wave rectifier circuit along with the output is shown in the figure. The contribution (s) from the diode 1 is ( are )
  A)
   C                                           
  done clear
  B)
   AC   
  done clear
  C)
   S.D                       
  done clear
  D)
   AB,C.D
  done clear
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• question_answer50) Two identical\[p-n\]junctions may be connected in series with a battery in three ways as shown in the figure. The potential drops across the two n-p junctions are equal in
  A)
   circuit 1 and circuit 2
  done clear
  B)
   circuit 2 and circuit 3
  done clear
  C)
   circuit 3 and circuit 1
  done clear
  D)
   circuit 1 only
  done clear
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• question_answer51) A transistor is used in common emitter mode as an amplifier, then
  A)
   the base emitter junction is forward unbiased
  done clear
  B)
   the base emitter junction is reverse biased
  done clear
  C)
   the input signal is connected in series with the voltage applied to bias of the base emitter junction
  done clear
  D)
   the input signal is connected in series with the voltage applied to bias the emitter collector junction
  done clear
  View Answer play_arrow

• question_answer52) Two point charges\[+q\]and\[+4q\]are located at \[x=0\]and\[x=L\]respectively. The location of a point on the\[x-\]axis at which the net electric field due to these two points charges is zero, is
  A)
   \[L/3\]                                
  done clear
  B)
   \[2L\]
  done clear
  C)
   \[4L\]                                  
  done clear
  D)
   \[8L\]
  done clear
  View Answer play_arrow

• question_answer53) If electric flux entering and leaving an enclosed surface is\[{{\phi }_{1}}\]and\[{{\phi }_{2}}\]respectively, the electric charge inside the enclosed surface will be
  A)
   \[({{\phi }_{1}}+{{\phi }_{2}}){{\varepsilon }_{0}}\]                         
  done clear
  B)
   \[({{\phi }_{2}}-{{\phi }_{1}}){{\varepsilon }_{0}}\]
  done clear
  C)
   \[({{\phi }_{1}}+{{\phi }_{2}}){{\varepsilon }_{0}}\]                         
  done clear
  D)
   \[({{\phi }_{2}}-{{\phi }_{1}})/{{\varepsilon }_{0}}\]
  done clear
  View Answer play_arrow

• question_answer54) In a potentiometer experiment, the balancing with a cell is at 240 cm. On shunting the cell with a resistance of\[2\,\Omega ,\]the balancing length becomes 120 cm. The internal resistance of the cell is
  A)
   \[0.5\,\Omega \]                            
  done clear
  B)
   \[1\,\Omega \]   
  done clear
  C)
   \[2\,\Omega \]                               
  done clear
  D)
   \[4\,\Omega \]
  done clear
  View Answer play_arrow

• question_answer55) The total current supplied to the circuit by the battery is
  A)
   1 A                                        
  done clear
  B)
   2 A
  done clear
  C)
   4 A                                        
  done clear
  D)
   6 A
  done clear
  View Answer play_arrow

• question_answer56) The displacement y of a particle in a medium can be expressed as \[y={{10}^{-6}}\sin (100t+20x+\pi /4)m,\]where t is in second and\[x\]in metre. The speed of the wave is
  A)
   2000m/s             
  done clear
  B)
   5 m/s
  done clear
  C)
   20 m/s                
  done clear
  D)
   57cm/s
  done clear
  View Answer play_arrow

• question_answer57) If the phase difference between two points is \[60{}^\circ \]on a wave velocity of 360 m/s and frequency 500 Hz, then path difference between the two points is
  A)
   1 cm                                     
  done clear
  B)
   6 cm
  done clear
  C)
   12cm                                   
  done clear
  D)
   24cm
  done clear
  View Answer play_arrow

• question_answer58) In a wave motion\[y=A\sin (kx-\omega t),y\]can represent
  A)
   electric field     
  done clear
  B)
   magnetic field
  done clear
  C)
   displacement   
  done clear
  D)
   pressure
  done clear
  View Answer play_arrow

• question_answer59) If\[{{W}_{1}},{{W}_{2}}\]and\[{{W}_{3}}\]represent the work done in moving a particle from A to B along three different paths 1, 2 and 3 respectively in the gravitational field of a point mass m as shown in the figure, find the correct relation between \[{{W}_{1}},{{W}_{2}}\]and\[{{W}_{3}}\].
  A)
   \[{{W}_{1}}>{{W}_{2}}>{{W}_{3}}\]       
  done clear
  B)
   \[{{W}_{1}}={{W}_{2}}={{W}_{3}}\]
  done clear
  C)
   \[{{W}_{1}}<{{W}_{2}}<{{W}_{3}}\]       
  done clear
  D)
   \[{{W}_{2}}>{{W}_{2}}>{{W}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer60) A place where the vertical component of the earths magnetic field is zero has angle of dip is
  A)
   \[45{}^\circ \]                                  
  done clear
  B)
   \[90{}^\circ \]
  done clear
  C)
   \[0{}^\circ \]                                     
  done clear
  D)
   \[60{}^\circ \]
  done clear
  View Answer play_arrow

• question_answer61) 20 mL of 0.5 N\[HCl\]and 35 mL of 0.1 N \[NaOH\]are mixed. The resulting solution will
  A)
   be neutral
  done clear
  B)
   be basic
  done clear
  C)
   turn phenolphthalein solution pink
  done clear
  D)
   turn methyl orange red
  done clear
  View Answer play_arrow

• question_answer62) The cooling in refrigerator is due to
  A)
   the reaction of the refrigerator gas
  done clear
  B)
   the expansion of ice
  done clear
  C)
   the expansion of the gas in the refrigerator
  done clear
  D)
   the work of the compressor
  done clear
  View Answer play_arrow

• question_answer63) Which of the following isomeric heptanes can yield seven different monochlorinated products upon free radical chlorination?
  A)
   3-methylhexane    
  done clear
  B)
   2, 2-dimethylpentane
  done clear
  C)
   2-methylhexane    
  done clear
  D)
   2, 3-dimethylpentane
  done clear
  View Answer play_arrow

• question_answer64) In an exothermic equilibrium,\[A+3BA{{B}_{3}}\]all the reactants and products are in gaseous state. The                 formation of\[A{{B}_{3}}\]is favoured at
  A)
   low temperature and low pressure
  done clear
  B)
   low temperature and high pressure
  done clear
  C)
   high temperature and high pressure
  done clear
  D)
   high temperature and low pressure
  done clear
  View Answer play_arrow

• question_answer65) The compound which is not formed during the dry distillation of a mixture of calcium formate and calcium acetate is
  A)
   methanol                          
  done clear
  B)
   propanal
  done clear
  C)
   propanone                       
  done clear
  D)
   ethanol
  done clear
  View Answer play_arrow

• question_answer66) A bivalent metal has an equivalent mass of 32. The molecular mass of the metal nitrate is
  A)
   182                                       
  done clear
  B)
   168
  done clear
  C)
   192                                       
  done clear
  D)
   188
  done clear
  View Answer play_arrow

• question_answer67) Arrange the following in the increasing order of their basic strengths \[C{{H}_{3}}N{{H}_{2}},{{(C{{H}_{3}})}_{2}}NH,{{(C{{H}_{3}})}_{3}}N,N{{H}_{3}}\]
  A)
   \[N{{H}_{3}}<{{(C{{H}_{3}})}_{3}}N<{{(C{{H}_{3}})}_{2}}NH<C{{H}_{3}}N{{H}_{2}}\]
  done clear
  B)
   \[N{{H}_{3}}<{{(C{{H}_{3}})}_{3}}N<C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH\]
  done clear
  C)
   \[{{(C{{H}_{3}})}_{3}}N<N{{H}_{3}}<C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH\]
  done clear
  D)
   \[C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH<{{(C{{H}_{3}})}_{3}}N<N{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer68) The line spectrum of He+ ion will resemble that of
  A)
   hydrogen atom
  done clear
  B)
   \[L{{i}^{+}}ion\]
  done clear
  C)
   helium atom
  done clear
  D)
   lithium atom
  done clear
  View Answer play_arrow

• question_answer69) 0.5 mole of each of\[{{H}_{2}},S{{O}_{2}}\]and\[C{{H}_{4}}\]are kept in a container. A hole was made in the container. After 3 h, the order of partial pressures in the container will be
  A)
   \[pS{{O}_{2}}>p{{H}_{2}}>pC{{H}_{4}}\]
  done clear
  B)
   \[pS{{O}_{2}}>pC{{H}_{4}}>p{{H}_{2}}\]
  done clear
  C)
   \[p{{H}_{2}}>pS{{O}_{2}}>pC{{H}_{4}}\]
  done clear
  D)
   \[p{{H}_{2}}>pC{{H}_{4}}>pS{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer70) Gold is extracted by hydrometallurgical process, based on its property
  A)
   of being electropositive
  done clear
  B)
   of being less reactive
  done clear
  C)
   to form complexes which are water soluble
  done clear
  D)
   to form salts which are water soluble
  done clear
  View Answer play_arrow

• question_answer71) An evacuated glass vessel weighs 50 g when empty, 144.0 g when filled with a liquid of density\[0.47\text{ }g\text{ }m{{L}^{-1}}\]and 50.5 g when filled with an ideal gas at 760 mm Hg and 300 K. The molar mass of the ideal gas is \[[R=0.0821L\text{ }atm\text{ }{{K}^{-1}}mo{{l}^{-1}}]\]
  A)
   61.575                 
  done clear
  B)
   130.98
  done clear
  C)
   123.75                 
  done clear
  D)
   47.87
  done clear
  View Answer play_arrow

• question_answer72) What is the correct order of acidity from weakest to strongest acid for these compounds
  A)
   I<IV<III<II                          
  done clear
  B)
   III<IV<I<II
  done clear
  C)
   IV<I<III<II                          
  done clear
  D)
   II<III<I<IV
  done clear
  View Answer play_arrow

• question_answer73) A body of mass\[x\text{ }kg\]is moving with a velocity of\[100\text{ }m{{s}^{-1}}\]. Its   de-Broglie wavelength is\[6.62\times {{10}^{-35}}m\]. Hence,\[x\]is \[[h=6.62\times {{10}^{-34}}Js]\]
  A)
   0.1 kg                  
  done clear
  B)
   0.25 kg
  done clear
  C)
   0.15 kg                
  done clear
  D)
   0.2 kg
  done clear
  View Answer play_arrow

• question_answer74) In the eclipsed conformation of ethane, the dihedral angle between the hydrogen atoms of adjacent methyl groups is
  A)
   \[60{}^\circ \]                                  
  done clear
  B)
   \[120{}^\circ \]
  done clear
  C)
   \[0{}^\circ \]                                     
  done clear
  D)
   \[180{}^\circ \]
  done clear
  View Answer play_arrow

• question_answer75) A precipitate of\[AgCl\]is formed when equal volumes of the following are mixed\[[{{K}_{sp}}\]for\[AgCl={{10}^{-10}}\]]
  A)
   \[{{10}^{-4}}\text{ }M\text{ }AgN{{O}_{3}}and\text{ }{{10}^{-7}}M\text{ }HCl\]
  done clear
  B)
   \[{{10}^{-5}}\text{ }M\text{ }AgN{{O}_{3}}and\text{ }{{10}^{-6}}M\text{ }HCl\]
  done clear
  C)
   \[{{10}^{-5}}\text{ }M\text{ }AgN{{O}_{3}}and\text{ }{{10}^{-4}}M\text{ }HCl\]
  done clear
  D)
   \[{{10}^{-6}}\text{ }M\text{ }AgN{{O}_{3}}and\text{ }{{10}^{-6}}M\text{ }HCl\]
  done clear
  View Answer play_arrow

• question_answer76) Amongst the following, the compound that can most readily get sulphonated is
  A)
   benzene            
  done clear
  B)
   toluene
  done clear
  C)
   nitrobenzene                  
  done clear
  D)
   chlorobenzene
  done clear
  View Answer play_arrow

• question_answer77) The major product of the addition of water molecule to propyne in the presence of mercuric sulphate and dilute sulphuric acid is
  A)
   ethanal               
  done clear
  B)
   2-propanol
  done clear
  C)
   propane             
  done clear
  D)
   propanone
  done clear
  View Answer play_arrow

• question_answer78) Which of the following is an amphoteric acid?
  A)
   Glycine               
  done clear
  B)
   Salicylic acid
  done clear
  C)
   Benzoic acid                     
  done clear
  D)
   Citric acid
  done clear
  View Answer play_arrow

• question_answer79) The crystal with metal deficiency defect is
  A)
   \[NaCl\]                             
  done clear
  B)
   \[FeO\]   
  done clear
  C)
   \[KCl\]                                
  done clear
  D)
   \[ZnO\]
  done clear
  View Answer play_arrow

• question_answer80) How many moles of Pt may be deposited on the cathode when 0.80 F of electricity is passed through a 1.0 M solution of\[P{{t}^{4+}}\]?
  A)
   1.0 mol               
  done clear
  B)
   0.20 mol
  done clear
  C)
   0.40 mol             
  done clear
  D)
   0.80 mol
  done clear
  View Answer play_arrow

• question_answer81) 1 g of a non-volatile, non-electrolyte solute of molar mass 250 g/mol was dissolved in 51.2 g of benzene. If the freezing point depression constant,\[{{k}_{f}}\]of benzene is\[5.12\text{ }kg\text{ }K\text{ }mo{{l}^{-1}},\] the freezing point of benzene is lowered by
  A)
   0.3K                     
  done clear
  B)
   0.5K  
  done clear
  C)
   0.2K                     
  done clear
  D)
   0.4 K
  done clear
  View Answer play_arrow

• question_answer82) A 6% solution of urea is isotonic with
  A)
   1M solution of glucose
  done clear
  B)
   0.05 M solution of glucose
  done clear
  C)
   6% solution of glucose
  done clear
  D)
   25% solution of glucose
  done clear
  View Answer play_arrow

• question_answer83) Pick out the incorrect statement from the following.
  A)
  \[sp\] hybrid orbitals are equivalent and are at an angle of\[180{}^\circ \]with each other
  done clear
  B)
  \[s{{p}^{2}}\]hybrid orbitals are equivalent and bond angle between any two of them is\[120{}^\circ \]
  done clear
  C)
  \[s{{p}^{3}}{{d}^{2}}\]hybrid orbitals are equivalent and are oriented towards corners of a regular octahedron
  done clear
  D)
  \[ds{{p}^{2}}\]hybrid orbitals are equivalent with a bond angle of\[90{}^\circ \]between any two of them
  done clear
  View Answer play_arrow

• question_answer84) For a chemical reaction\[A\to B,\]the rate of the reaction is\[2\times {{10}^{-3}}\]mol\[d{{m}^{-3}}{{s}^{-1}},\]when the initial concentration is 0.05 mol \[d{{m}^{-3}}\]. The rate of the same reaction is\[1.6\times {{10}^{-2}}mol\text{ }d{{m}^{-3}}{{s}^{-1}}\] when the initial concentration is\[0.1\text{ }mol\text{ }d{{m}^{-3}}\]. The order of the reaction is
  A)
   2                                            
  done clear
  B)
   0
  done clear
  C)
   3                                            
  done clear
  D)
   1
  done clear
  View Answer play_arrow

• question_answer85) The  temperature  of the slag zone in metallurgy of iron using blast furnace is
  A)
   \[1200-1500{}^\circ C\]                
  done clear
  B)
   \[1500-1600{}^\circ C\]
  done clear
  C)
   \[400-700{}^\circ C\]                     
  done clear
  D)
   \[800-1000{}^\circ C\]
  done clear
  View Answer play_arrow

• question_answer86) The temperature of the system decreases in an
  A)
   adiabatic compression
  done clear
  B)
   isothermal compression
  done clear
  C)
   isothermal expansion
  done clear
  D)
   adiabatic expansion
  done clear
  View Answer play_arrow

• question_answer87) In countries nearer to polar region, the roads are sprinkled with\[CaC{{l}_{2}}\]. This is
  A)
   to minimise the wear and tear of the roads
  done clear
  B)
   to minimise the snow fall
  done clear
  C)
   to minimise pollution
  done clear
  D)
   to minimise the accumulation of dust on the road
  done clear
  View Answer play_arrow

• question_answer88) The correct order of reactivity of the three halides ethyl chloride (I), iso-propyl chloride (II) and benzyl chloride (III) in \[{{S}_{N}}1\] reaction is
  A)
   I>II>III                 
  done clear
  B)
   III>II>I
  done clear
  C)
   II>I>III                 
  done clear
  D)
   I>III>II
  done clear
  View Answer play_arrow

• question_answer89) \[C{{H}_{3}}COOH\xrightarrow{LiAl{{H}_{4}}}X\xrightarrow[300{}^\circ C]{Cu}Y\xrightarrow[NaOH]{Dilute}Z\] In the above reaction, Z is
  A)
   butanol              
  done clear
  B)
   aldol
  done clear
  C)
   ketol                    
  done clear
  D)
   acetal
  done clear
  View Answer play_arrow

• question_answer90) The reaction in which phenol differs from alcohol is
  A)
   it undergoes esterification with carboxylic acid
  done clear
  B)
   it reacts with ammonia
  done clear
  C)
   it forms yellow crystals of iodoform
  done clear
  D)
   it liberates\[{{H}_{2}}\]with Na metal
  done clear
  View Answer play_arrow

• question_answer91) The solubility of a gas in water at 300 K under a pressure of 100 atm is\[4\times {{10}^{-3}}kg{{L}^{-1}}\]. Therefore, the mass of the gas in kg dissolved 250 mL of water under a pressure of 250 atm at 300 K is
  A)
   \[2.5\times {{10}^{-3}}\]             
  done clear
  B)
   \[2.0\times {{10}^{-3}}\]
  done clear
  C)
   \[1.25\times {{10}^{-3}}\]           
  done clear
  D)
   \[5.0\times {{10}^{-3}}\]
  done clear
  View Answer play_arrow

• question_answer92) There are 20 naturally occurring ammo acids. The maximum number of tripeptides that can be obtained is
  A)
   8000                     
  done clear
  B)
   6470   
  done clear
  C)
   7465                     
  done clear
  D)
   5360
  done clear
  View Answer play_arrow

• question_answer93) An example of a sulphur containing amino acid is
  A)
   lysine                  
  done clear
  B)
   serine  
  done clear
  C)
   cysteine                             
  done clear
  D)
   tyrosine
  done clear
  View Answer play_arrow

• question_answer94) The species among the following, which can act as an acid and a base is
  A)
   \[HSO_{4}^{-}\]                              
  done clear
  B)
   \[SO_{4}^{2-}\]
  done clear
  C)
   \[{{H}_{3}}{{O}^{+}}\]                  
  done clear
  D)
   \[C{{l}^{-}}\]
  done clear
  View Answer play_arrow

• question_answer95) A compound A has a molecular formula\[{{C}_{2}}C{{l}_{3}}OH\]. It reduces Fehlings solution and on oxidation, gives a monocarboxylic acid B. A can be obtained by the action of chlorine on ethyl alcohol. A is
  A)
   chloroform        
  done clear
  B)
   chloral
  done clear
  C)
   methyl chloride    
  done clear
  D)
   monochloroacetic acid
  done clear
  View Answer play_arrow

• question_answer96) A certain reaction is at equilibrium at\[82{}^\circ C\] and the enthalpy change for this reaction is 21.3 kJ. The value of\[\Delta S(J{{K}^{-1}}mo{{l}^{-1}})\]for the reaction is
  A)
   55.0                      
  done clear
  B)
   60.0   
  done clear
  C)
   68.5                      
  done clear
  D)
   120.0
  done clear
  View Answer play_arrow

• question_answer97) If in the reaction\[{{N}_{2}}{{O}_{4}}2NO_{2}^{-};x\] is that part of\[{{N}_{2}}{{O}_{4}}\]which dissociates, then the number of molecules at equilibrium will be
  A)
   1                                            
  done clear
  B)
   3
  done clear
  C)
   \[(1+x)\]                            
  done clear
  D)
   \[{{(1+x)}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer98) Reaction of diborane with ammonia gives initially
  A)
   \[{{B}_{2}}{{H}_{6}}.N{{H}_{3}}\]            
  done clear
  B)
   borazole
  done clear
  C)
   \[{{B}_{2}}{{H}_{6}}.3N{{H}_{3}}\]          
  done clear
  D)
  \[{{[B{{H}_{2}}{{(N{{H}_{3}})}_{2}}]}^{+}}{{[B{{H}_{4}}]}^{-}}\]
  done clear
  View Answer play_arrow

• question_answer99) An aqueous solution containing 6.5 g of\[NaCl\] of 90 purity was subjected to electrolysis. After the complete electrolysis, the solution was evaporated to get solid\[NaOH\]. The volume of 1M acetic acid required to neutralise\[NaOH\] obtained above is
  A)
   \[1000c{{m}^{3}}\]       
  done clear
  B)
   \[2000c{{m}^{3}}\]
  done clear
  C)
   \[100c{{m}^{3}}\]                           
  done clear
  D)
   \[200c{{m}^{3}}\]
  done clear
  View Answer play_arrow

• question_answer100) Corrosion   of  iron   is   essentially   an electrochemical phenomenon where the cell reactions are
  A)
   Fe is oxidised to\[F{{e}^{2+}}\]and dissolved oxygen in water is reduced to\[O{{H}^{-}}\]
  done clear
  B)
   Fe is oxidised to\[F{{e}^{3+}}\]and\[{{H}_{2}}O\]is reduced to\[O_{2}^{2-}\]
  done clear
  C)
   Fe is oxidised to\[F{{e}^{2+}}\]and\[{{H}_{2}}O\]is reduced to
  done clear
  D)
   Fe is oxidised to\[F{{e}^{2+}}\]and\[{{H}_{2}}O\]is reduced to\[{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer101) The hybridisation of the central atom in\[Br{{F}_{5}}\]molecule is
  A)
   \[s{{p}^{3}}\]                                   
  done clear
  B)
   \[ds{{p}^{2}}\]   
  done clear
  C)
   \[s{{p}^{3}}{{d}^{2}}\]                 
  done clear
  D)
   \[{{d}^{3}}s{{p}^{3}}\]
  done clear
  View Answer play_arrow

• question_answer102) The correct statement with regard to\[H_{2}^{+}\]and \[H_{2}^{-}\]is
  A)
   both\[H_{2}^{+}\]and\[H_{2}^{-}\]are equally stable
  done clear
  B)
   both\[H_{2}^{+}\]and\[H_{2}^{-}\]do not exist
  done clear
  C)
   \[H_{2}^{-}\]is more stable than\[H_{2}^{+}\]
  done clear
  D)
   \[H_{2}^{+}\]is more stable than\[H_{2}^{-}\]
  done clear
  View Answer play_arrow

• question_answer103) A covalent molecule\[A{{B}_{3}}\]has pyramidal structure. The number of lone pair and bond pair of electrons in the molecule a respectively
  A)
   2 and 2                
  done clear
  B)
   0 and 2
  done clear
  C)
   3 and 1                
  done clear
  D)
   1 and 3
  done clear
  View Answer play_arrow

• question_answer104) The reaction involved in the oil of winter green test is\[Salicylic\text{ }acid\xrightarrow[conc.{{H}_{2}}S{{O}_{4}}]{\Delta }product\]. The product is treated with\[N{{a}_{2}}C{{O}_{3}}\]solution. The missing reagent in the above reaction is
  A)
   phenol                
  done clear
  B)
   \[NaOH\]
  done clear
  C)
   ethanol              
  done clear
  D)
   methanol
  done clear
  View Answer play_arrow

• question_answer105) The correct order of ionisation energy of C, N, O, F is
  A)
   \[F<O<N<C\]                   
  done clear
  B)
   \[F<N<C<O\]
  done clear
  C)
   \[C<N<O<F\]                   
  done clear
  D)
   \[C<O<N<F\]
  done clear
  View Answer play_arrow

• question_answer106) For a reaction\[A+2B\xrightarrow[{}]{{}}C,\] the amount of C formed by starting the reaction with 5 moles of A and 8 moles of B is
  A)
   5 mol                   
  done clear
  B)
   8 mol  
  done clear
  C)
   16 mol                 
  done clear
  D)
   4 mol
  done clear
  View Answer play_arrow

• question_answer107) When plants and animals decay, the organic nitrogen is converted into inorganic nitrogen. The inorganic nitrogen is in the form of
  A)
   ammonia         
  done clear
  B)
   elements of nitrogen
  done clear
  C)
   nitrates           
  done clear
  D)
   nitrides
  done clear
  View Answer play_arrow

• question_answer108) Use of chlorofluoro carbons is not encouraged because,
  A)
   they are harmful to the eyes of people that use it
  done clear
  B)
   they damage the refrigerators and air conditioners
  done clear
  C)
   they eat away the ozone in the atmosphere
  done clear
  D)
   they destroy the oxygen layer
  done clear
  View Answer play_arrow

• question_answer109) Which of the following biomolecules contain non-transition metal ion?
  A)
   Vitamin \[{{B}_{12}}\]                  
  done clear
  B)
   Chlorophyll
  done clear
  C)
   Haemoglobin                   
  done clear
  D)
   Insulin
  done clear
  View Answer play_arrow

• question_answer110) Among  the   oxides, \[M{{n}_{2}}{{O}_{7}}(I),{{V}_{2}}{{O}_{3}}(II),\] \[{{V}_{2}}{{O}_{5}}(III),CrO(IV)\]and\[C{{r}_{2}}{{O}_{3}}(V),\]the basic oxides are
  A)
   I and II                
  done clear
  B)
   II and III
  done clear
  C)
   III and IV           
  done clear
  D)
   II and IV
  done clear
  View Answer play_arrow

• question_answer111) Which of the following complexes exists as pair of enantiomers?
  A)
   \[trans-{{[Co{{(en)}_{2}}C{{l}_{2}}]}^{+}}\]
  done clear
  B)
   \[{{[Co{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]}^{+}}\]
  done clear
  C)
   \[[Co{{\{P{{({{C}_{2}}{{H}_{5}})}_{3}}\}}_{2}}ClBr]\]
  done clear
  D)
   \[{{[Cr{{(en)}_{3}}]}^{3+}}\]
  done clear
  View Answer play_arrow

• question_answer112) Three dimensional molecules with cross links are formed in the case of a
  A)
   thermoplastic      
  done clear
  B)
   thermosetting plastic
  done clear
  C)
   Both (a) and (b)    
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer113) Which of the following is not present in a nucleotide?
  A)
   Cytosine            
  done clear
  B)
   Guanine
  done clear
  C)
   Adenine             
  done clear
  D)
   Tyrosine
  done clear
  View Answer play_arrow

• question_answer114) Antiseptic chloroxylenol is
  A)
   4-chloro-3,5-dimethyl phenol
  done clear
  B)
   3-chloro-4,5-dimethyl phenol
  done clear
  C)
   4-chloro-2,5-dimethyl phenol
  done clear
  D)
   5-chloro-3,4-dimethyl phenol
  done clear
  View Answer play_arrow

• question_answer115) Alum is a water purifier, because it
  A)
   coagulates the impurities
  done clear
  B)
   softens hard water
  done clear
  C)
   gives taste
  done clear
  D)
   destroys the pathogenic bacteria
  done clear
  View Answer play_arrow

• question_answer116) A diabetic person carries a packet or glucose with him always, because
  A)
   glucose reduces the blood sugar level slowly
  done clear
  B)
   glucose increases the blood sugar level slowly
  done clear
  C)
   glucose reduces the blood sugar level
  done clear
  D)
   glucose increases the blood sugar level almost instantaneously
  done clear
  View Answer play_arrow

• question_answer117) A emulsifier is a substance which
  A)
   stabilises the emulsion
  done clear
  B)
   homogenises the emulsion
  done clear
  C)
   coagulates the emulsion
  done clear
  D)
   accelerates the dispersion of liquid in liquid
  done clear
  View Answer play_arrow

• question_answer118) Which of the following pairs of elements cannot form an alloy?
  A)
   Zn, Cu                                 
  done clear
  B)
   Fe, Hg
  done clear
  C)
   Fe, C                                    
  done clear
  D)
   Hg, Na
  done clear
  View Answer play_arrow

• question_answer119) The function of\[Fe{{(OH)}_{3}}\]in the contact process is
  A)
   to remove arsenic impurity
  done clear
  B)
   to detect colloidal impurity
  done clear
  C)
   to remove moisture
  done clear
  D)
   to remove dust particles
  done clear
  View Answer play_arrow

• question_answer120) Consider the following statements

  I. Increase in concentration of reactant increases the rate of a zero order reaction

  II. Rate constant k is equal to collision frequency A, if \[{{E}_{a}}=0\]

  III. Rate constant k is equal to collision frequency A, if \[{{E}_{a}}=\infty \]

  IV. In k us T is a straight line

  V. In k vs 1 /T is a straight line

  Correct statements are
  A)
   I and IV                               
  done clear
  B)
   II and V
  done clear
  C)
   III and IV                            
  done clear
  D)
   ll and III
  done clear
  View Answer play_arrow

• question_answer121) Function of SER is
  A)
   protein metabolism
  done clear
  B)
   lipid metabolism             
  done clear
  C)
   carbohydrate metabolism
  done clear
  D)
   catabolic activity
  done clear
  View Answer play_arrow

• question_answer122) The basic principles of embryonic development were first given by
  A)
   Weismann        
  done clear
  B)
   Haeckel
  done clear
  C)
   Von Baer           
  done clear
  D)
   Malthus
  done clear
  View Answer play_arrow

• question_answer123) Ornithorhynchus is a connecting link between
  A)
   fishes and amphibians
  done clear
  B)
   Annelida and Arthropoda
  done clear
  C)
   Annelida and Mollusca
  done clear
  D)
   reptiles and mammals
  done clear
  View Answer play_arrow

• question_answer124) Corpus luteum in mammals occurs in
  A)
   brain and connects two cerebral hemispheres
  done clear
  B)
   ovaries and produces progesterone
  done clear
  C)
   heart and initiate contraction
  done clear
  D)
   skin and acts as a pain receptor
  done clear
  View Answer play_arrow

• question_answer125) Which of the following helps in the absorption of vitamin\[-{{B}_{12}}\]?
  A)
   Pepsin
  done clear
  B)
   Bile juice
  done clear
  C)
   Castles intrinsic gastric factor
  done clear
  D)
   Cholecy stokinin
  done clear
  View Answer play_arrow

• question_answer126) A fish introduced into a water body to control mosquito population is
  A)
   Gambusia
  done clear
  B)
   Labeo
  done clear
  C)
   Notopterus
  done clear
  D)
   Fistularia
  done clear
  View Answer play_arrow

• question_answer127) Patella (knee cap) is an example of
  A)
   replacing bones              
  done clear
  B)
   sesamoid bones
  done clear
  C)
   visceral bones                 
  done clear
  D)
   compact bones
  done clear
  View Answer play_arrow

• question_answer128) Which of the following is correctly matched?
  A)
   Enlarged P-wave-Acute myocardial infarction
  done clear
  B)
   QRS wave flat-Atherosclerotic heart disease
  done clear
  C)
   Enlarged Q and R-wave-Myocardial infarction
  done clear
  D)
   Elevated S-T-Enlargement of atria
  done clear
  View Answer play_arrow

• question_answer129) Fosciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively
  A)
   redia and miracidium
  done clear
  B)
   cercaria and redia
  done clear
  C)
   cercaria and metacercaria
  done clear
  D)
   miracidium and metacercaria
  done clear
  View Answer play_arrow

• question_answer130) Match the parts of the human brain with their functions.

  Column I	Column II
  A. Cerebrum	1. Controls the pituitary
  B. Cerebellum	2. Controls vision and hearing
  C. Hypothalamus	3. Controls the rate of heart beat
  D. Midbrain	4. Seat of intelligence
  	5. Maintains body posture

  A)
                  A-5         B-4         C-2         D-1
  done clear
  B)
                  A-4         B-5         C-2         D-1
  done clear
  C)
                  A-5         B-4         C-1         D-2
  done clear
  D)
                  A-4         B-5         C-1         D-2
  done clear
  View Answer play_arrow

• question_answer131) The endosymbiotic hypothesis of mitochondrial origin states that
  A)
   mitochondria were capable of self-duplication
  done clear
  B)
   mitochondria were initially aerobic bacteria
  done clear
  C)
   mitochondria were chloroplast in the beginning
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer132) Select the correct sequence of stages in the evolution of modern man (Homo sapiens)
  A)
   Australopithecus, Homo habilis, Neanderthal, Cro-magnon man, Modem man
  done clear
  B)
   Homo habilis, Neanderthal, Australopithecus, Cro-magnon man, Modern man
  done clear
  C)
   Australopithecus, Neanderthal, Cro-magnon man Homo habilis, Modern man
  done clear
  D)
   Neanderthal. Australopithecus, Cro-magnon man, Homo habilis, Modern man
  done clear
  View Answer play_arrow

• question_answer133) Host cells in response to viral infections produces a low molecular weight protein, that protect other cells against further viral infection. This substance is
  A)
   phytotoxin                        
  done clear
  B)
   antibody
  done clear
  C)
   hormone           
  done clear
  D)
   interferon
  done clear
  View Answer play_arrow

• question_answer134) Which of the following branch of biology is correctly matched?
  A)
   Ornithology-Study of mammals
  done clear
  B)
   Herpetalogy-Study of molluscs
  done clear
  C)
   Ophiology-Study of snakes
  done clear
  D)
   Therology-Study of birds
  done clear
  View Answer play_arrow

• question_answer135) If a haemophilic carrier female marries a normal man, the chances are that
  A)
   all the daughters will have haemophilia
  done clear
  B)
   50% of the daughters will have haemophilia
  done clear
  C)
   50% of the sons will have haemophilia
  done clear
  D)
   all the sons will have haemophilia
  done clear
  View Answer play_arrow

• question_answer136) Which one of the given statement is not true for Archaeopteryx?
  A)
   Each wing had three clawed digit
  done clear
  B)
   Hind feet with five digits
  done clear
  C)
   Long jointed lizard like tail
  done clear
  D)
   The codont teeth on both jaws
  done clear
  View Answer play_arrow

• question_answer137) A natural form of genetic engineering is exhibited by
  A)
   Haemophilus influenza
  done clear
  B)
   E. coli
  done clear
  C)
   Dolly
  done clear
  D)
   Agrobacterium tumefaciens
  done clear
  View Answer play_arrow

• question_answer138) Glands in a vertebrate body originate from
  A)
   ectoderm, mesoderm and endoderm
  done clear
  B)
   ectoderm and endoderm
  done clear
  C)
   mesoderm
  done clear
  D)
   ectoderm
  done clear
  View Answer play_arrow

• question_answer139) Tumour promoter is
  A)
   substance that activates transcription in cancer cells
  done clear
  B)
   oncogene promoting cancer
  done clear
  C)
   substance that produces tumour
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer140) Identify the incorrect match
  A)
   Mulberry silk-Bombyx mori
  done clear
  B)
   Tasar silk-Antheraea pernyi
  done clear
  C)
   Muga silk-Antheraea assama
  done clear
  D)
   Erisilk-Affacus ricini
  done clear
  View Answer play_arrow

• question_answer141) All chordates at one or other stage possess
  A)
   two pairs of pentadactyl limbs
  done clear
  B)
   pharyngeal gill slits
  done clear
  C)
   movable jaw
  done clear
  D)
   vertebral column
  done clear
  View Answer play_arrow

• question_answer142) Statement I An injury to the anterior pituitary affects the growth of a person. Statement II Injury to adrenal cortex is not likely to affect secretion of corti Choose the correct option
  A)
   Statement I is correct but II is incorrect
  done clear
  B)
   Statement II is correct but I is incorrect
  done clear
  C)
   Both statement are correct
  done clear
  D)
   Both statements are incorrect
  done clear
  View Answer play_arrow

• question_answer143) Mammals have
  A)
   biconvex RBCs to increase the surface area
  done clear
  B)
   biconcave RBCs to increase the surface area
  done clear
  C)
   spherical RBCs to increase the surface area
  done clear
  D)
   no RBCs
  done clear
  View Answer play_arrow

• question_answer144) Match the Column I and Column II.

  Column I	Column II
  A. Squamous	1. Intestinal glands
  B. Cuboidal	2. Trachea
  C. Columnar	3. Ovary
  D. Ciliated	4. Blood vessels
  	5. Bronchioles

  A)
   A-2, B-5, C-1, D-3     
  done clear
  B)
   A-4, B-3, C-1, D-2
  done clear
  C)
   A-4, B-3, C-1, D-5     
  done clear
  D)
   A-4, B-5, C-1, D-2
  done clear
  View Answer play_arrow

• question_answer145) A person was found to possess reduced haemoglobin content in the blood, caused due to disturbance in formation of RBCs. He is suffering from
  A)
   vitamin\[-{{B}_{1}}\]defeciency
  done clear
  B)
   vitamin-A defeciency
  done clear
  C)
   vitamin\[-{{B}_{12}}\]defeciency
  done clear
  D)
   vitamin-E deficiency
  done clear
  View Answer play_arrow

• question_answer146) Who formulated the chromosomal theory of linkage
  A)
   T H Morgan and W Castle
  done clear
  B)
   Stern and Hotta
  done clear
  C)
   Pontecarvo
  done clear
  D)
   Bridges and Burns
  done clear
  View Answer play_arrow

• question_answer147) Which of the following region of root is responsible for increase in length of root?
  A)
   Root cap region              
  done clear
  B)
   Meristematic region
  done clear
  C)
   Region of elongation
  done clear
  D)
   Mature region
  done clear
  View Answer play_arrow

• question_answer148) Glycolysis is
  A)
   \[{{C}_{6}}{{H}_{12}}{{O}_{6}}+6{{O}_{2}}\xrightarrow[{}]{{}}6{{O}_{2}}+6{{H}_{2}}O\]
  done clear
  B)
   \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\xrightarrow[{}]{{}}2{{C}_{2}}{{H}_{5}}OH+2C{{O}_{2}}\]
  done clear
  C)
   \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\xrightarrow[{}]{{}}2{{C}_{3}}{{H}_{4}}{{O}_{3}}+4H\]
  done clear
  D)
  \[{{C}_{3}}{{H}_{4}}{{O}_{3}}+NADH\xrightarrow[{}]{{}}{{C}_{2}}{{H}_{5}}OH+C{{O}_{2}}+NA{{D}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer149) The protein that reproduce within the living cells are termed as
  A)
   plasmids            
  done clear
  B)
   phages 
  done clear
  C)
   prions                 
  done clear
  D)
   prophages
  done clear
  View Answer play_arrow

• question_answer150) Water pollution is best assessed by determining
  A)
   DO and BOD                     
  done clear
  B)
   BOD and turbidity
  done clear
  C)
   DO and acidity    
  done clear
  D)
   Hardness and alkalinity
  done clear
  View Answer play_arrow

• question_answer151) The correct sequence of cellular growth stages is
  A)
   division\[\to \]differentiation\[\to \]elongation
  done clear
  B)
   differentiation\[\to \]division\[\to \]elongation
  done clear
  C)
   division\[\to \]elongation\[\to \]differentiation
  done clear
  D)
   elongation\[\to \]differentiation\[\to \]division
  done clear
  View Answer play_arrow

• question_answer152) The organisms that thrives on the remains of dead plants and animals are categorised as
  A)
   carnivore          
  done clear
  B)
   omnivore
  done clear
  C)
   scavangers                        
  done clear
  D)
   predators
  done clear
  View Answer play_arrow

• question_answer153) In which of the following, determination of order of bases in a DNA molecule takes place
  A)
   Gene probing                  
  done clear
  B)
   Gene splicing
  done clear
  C)
   Gene mapping                
  done clear
  D)
   Gene sequencing
  done clear
  View Answer play_arrow

• question_answer154) A pea with white flower was crossed with another pea with white flower. When they selfed, the\[{{F}_{2}}-\]generation produced purple and white in the ratio of\[9:7\]. The reason for the result is that
  A)
   It is typical monohybrid Mendelian ratio
  done clear
  B)
   purple flower colour is dominant over white
  done clear
  C)
   it is a complementary factor
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer155) The dark coloured dead wood present in the central region of old tree is
  A)
   spring wood                     
  done clear
  B)
   heart wood
  done clear
  C)
   sap wood          
  done clear
  D)
   cambium
  done clear
  View Answer play_arrow

• question_answer156) Diffusion Pressure Deficit (DPD) is equal to the Osmotic pressure substracted by
  A)
   Osmotic Pressure (OP)
  done clear
  B)
   Turgor Pressure (TP)
  done clear
  C)
   Suction Pressure (SP)
  done clear
  D)
   Water Potential\[({{\psi }_{w}})\]
  done clear
  View Answer play_arrow

• question_answer157) Which of the following statement is not true about Griffiths experiment?
  A)
   The experiment was conducted in 1928
  done clear
  B)
   The experiment occurs with Streptococcus pneumonia
  done clear
  C)
   R and S-strain of bacteria
  done clear
  D)
   The experiment proves the process of  ransduction
  done clear
  View Answer play_arrow

• question_answer158) Oxygen released in photosynthesis comes out by
  A)
  photophosphorylation
  done clear
  B)
   photolysis of water
  done clear
  C)
   photorespiration    
  done clear
  D)
   Kelvin cycle
  done clear
  View Answer play_arrow

• question_answer159) In protein synthesis the base sequence of mRNA determines the primary structure of polypeptide chain because
  A)
   it determine the sequence of alignment of amino acid charged\[tRNA\]molecule
  done clear
  B)
   there is one to one coding relationship between each base on mRNA and amino acid
  done clear
  C)
   each amino acid is defined by a pair of base on\[mRNA\]
  done clear
  D)
   amino acid molecule align directly on the polynucleotide on \[mRNA\]
  done clear
  View Answer play_arrow

• question_answer160) What do you mean to the mutation in which replacement of a nucleotide occur by another similar type?
  A)
   Inversion                 
  done clear
  B)
   Transition substitution
  done clear
  C)
   Transversion substitution
  done clear
  D)
   Insertion frame-shift
  done clear
  View Answer play_arrow

• question_answer161) Which of the following assumption is not belonging to Hardy-Weinberg principle?
  A)
   The population size is very large
  done clear
  B)
   Random mating is occurring
  done clear
  C)
   Natural selection takes place
  done clear
  D)
   No mutation occurs
  done clear
  View Answer play_arrow

• question_answer162) Which ion is used in the protoplast fusion with the PEG (polyethylene glycol)?
  A)
   \[N{{a}^{+}}\]                  
  done clear
  B)
   \[C{{a}^{++}}\]
  done clear
  C)
   \[{{K}^{+}}\]                                     
  done clear
  D)
   \[M{{g}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer163) Which of the following rule states that Avian and mammalian forms are generally of higher size in colder region as compared to warmer region?
  A)
   Bergmanns rule
  done clear
  B)
   Alien rule
  done clear
  C)
   Gloger rule
  done clear
  D)
   Hardy-Weinberg rule
  done clear
  View Answer play_arrow

• question_answer164) Abzymes are
  A)
   catalytic antibodies
  done clear
  B)
   neutral antibodies
  done clear
  C)
   non-specific antibodies
  done clear
  D)
   defermed antibodies
  done clear
  View Answer play_arrow

• question_answer165) Population means
  A)
   all the animals of a place
  done clear
  B)
   all the animals and plants found in an area
  done clear
  C)
   human beings in an area
  done clear
  D)
   animal/plants of a species living in a specific area
  done clear
  View Answer play_arrow

• question_answer166) Parthenogenetic embryos in plants are those which are formed by
  A)
   unfertilised eggs            
  done clear
  B)
   fertilised eggs
  done clear
  C)
   sporophytic cells            
  done clear
  D)
   male gametophyte
  done clear
  View Answer play_arrow

• question_answer167) Multiplication of genetically identical copies of a cultiver by asexual reproduction is known as
  A)
   aclonal propagation
  done clear
  B)
   clonal propagation
  done clear
  C)
   vegetative propagation
  done clear
  D)
   polyclonal propagation
  done clear
  View Answer play_arrow

• question_answer168) The gene controlling seven traits in pea studied by Mendel were later found to be located on the following number of chromosomes
  A)
   seven                  
  done clear
  B)
   four    
  done clear
  C)
   five                      
  done clear
  D)
   six
  done clear
  View Answer play_arrow

• question_answer169) Glycolate accumulates in chloroplast when there is
  A)
   low\[C{{O}_{2}}\]          
  done clear
  B)
   high\[C{{O}_{2}}\]
  done clear
  C)
   bright light       
  done clear
  D)
   low temperature
  done clear
  View Answer play_arrow

• question_answer170) Part of gene which codes for an enzyme is
  A)
   cistron                
  done clear
  B)
   codon
  done clear
  C)
   exon                    
  done clear
  D)
   intron
  done clear
  View Answer play_arrow