Solved papers for WB JEE Medical WB JEE Medical Solved Paper-2014

done WB JEE Medical Solved Paper-2014 Total Questions - 200

• question_answer1) Consider three vectors \[A=\hat{i}+\hat{j}-2\hat{k},\,\]\[B=\hat{i}-\hat{j}+\hat{k}\]and \[C=2\hat{i}-3\hat{j}+4\hat{k}.\]A vector X of the form \[\alpha A+\beta B\](\[\alpha \] and\[\beta \] are numbers) is perpendicular to C. The ratio of \[\alpha \]and \[\beta \] is
  A)
  1:1
  done clear
  B)
   2:1
  done clear
  C)
   -1:1           
  done clear
  D)
   3:1
  done clear
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• question_answer2) Three capacitors \[3\mu F,6\mu F\] and \[6\mu F\]are connected in series to a source of 120 V. The potential difference, in volt, across the \[3\mu F\]capacitor will be
  A)
   24    
  done clear
  B)
   30     
  done clear
  C)
   40     
  done clear
  D)
   60
  done clear
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• question_answer3) A galvanometer having internal resistance \[10\,\Omega \] requires 0.01 A for a full scale deflection. To  convert this galvanometer to a voltmeter of full-scale deflection at 120 V, we need to connect a resistance of
  A)
   \[11990\,\Omega \]in series
  done clear
  B)
   \[11990\,\Omega \]in parallel
  done clear
  C)
  \[12010\,\Omega \] in series
  done clear
  D)
   \[12010\,\Omega \]in parallel
  done clear
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• question_answer4) A whistle whose an column is open at both ends has a fundamental frequency of 5100 Hz. If the speed of sound in air is \[340\,m{{s}^{-1}},\] the length of the whistle, in cm, is
  A)
   5/3                 
  done clear
  B)
   10/3
  done clear
  C)
   5                   
  done clear
  D)
   20/3
  done clear
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• question_answer5) The output Y of the logic circuit given below is
  A)
   \[\frac{\bar{A}+B}{(A+B)}.\bar{A}\]
  done clear
  B)
   \[\bar{A}\]
  done clear
  C)
   \[\overline{(\bar{A}+B)}.\bar{A}\]
  done clear
  D)
   \[\overline{(\bar{A}+B)}.A\]
  done clear
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• question_answer6) One mole of an ideal monoatomic gas is   heated at a constant pressure from \[0{{\,}^{o}}C\]to \[100{{\,}^{o}}C.\] Then the change in the internal energy of the gas is (Given,\[R=8.32\,J\,mol{{\,}^{-1}}{{K}^{-1}}\])
  A)
   \[0.83\times {{10}^{3}}J\]
  done clear
  B)
   \[4.6\times {{10}^{3}}\,J\]
  done clear
  C)
   \[2.08\times {{10}^{3}}\,J\]
  done clear
  D)
   \[1.25\times {{10}^{3}}\,J\]
  done clear
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• question_answer7) The ionization energy of hydrogen is 13.6 eV. The energy of the photon released when an electron jumps from the first excited state \[(n=2)\] to the ground state of a hydrogen atom is
  A)
   3.4eV           
  done clear
  B)
   4.53eV
  done clear
  C)
   10.2eV          
  done clear
  D)
   13.6eV
  done clear
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• question_answer8) A parallel plate capacitor is charged and then disconnected from the charging battery. If the plates are now moved farther apart by pulling at them by means of insulating handles, then
  A)
   the energy stored in the capacitor decreases
  done clear
  B)
   the capacitance of the capacitor increases
  done clear
  C)
   the charge on the capacitor decreases
  done clear
  D)
   the voltage across the capacitor increases
  done clear
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• question_answer9) When a particle executing SHM oscillates with a frequency v, then the kinetic energy of the particle
  A)
   changes periodically with a frequency of v
  done clear
  B)
   changes periodically with a frequency of 2v
  done clear
  C)
   changes periodically with a frequency of \[v/2\]
  done clear
  D)
   remains constant
  done clear
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• question_answer10) In which of the following pairs, the two  physical quantities have different dimensions?
  A)
   Plancks constant and angular momentum
  done clear
  B)
   Impulse and linear momentum
  done clear
  C)
   Moment of inertia and moment of a force
  done clear
  D)
   Energy and torque
  done clear
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• question_answer11) A cricket ball thrown across a field is at heights \[{{h}_{1}}\] and\[{{h}_{2}}\] from the point of projection at times \[{{t}_{1}}\] and \[{{t}_{2}}\]respectively after the throw. The ball is caught by a fielder at the same height as that of projection. The time of flight of the ball in this journey is
  A)
   \[\frac{{{h}_{1}}t_{2}^{2}-{{h}_{2}}_{1}^{2}}{{{h}_{1}}{{t}_{2}}-{{h}_{2}}{{t}_{1}}}\]
  done clear
  B)
   \[\frac{{{h}_{1}}t_{1}^{2}-{{h}_{2}}_{2}^{2}}{{{h}_{2}}{{t}_{1}}-{{h}_{1}}{{t}_{2}}}\]
  done clear
  C)
   \[\frac{{{h}_{1}}t_{2}^{2}-{{h}_{2}}_{1}^{2}}{{{h}_{1}}{{t}_{2}}-{{h}_{2}}{{t}_{1}}}\]
  done clear
  D)
   \[\frac{{{h}_{1}}t_{1}^{2}-{{h}_{2}}_{2}^{2}}{{{h}_{1}}{{t}_{1}}-{{h}_{2}}{{t}_{2}}}\]
  done clear
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• question_answer12) A small metal sphere of radius a is falling with a velocity \[\upsilon \] through a vertical column of a viscous liquid. If the coefficient of viscosity of the liquid is \[\eta ,\]then the sphere encounters an opposing force of
  A)
   \[6\pi \eta {{a}^{2}}v\]
  done clear
  B)
   \[\frac{6\eta v}{\pi a}\]
  done clear
  C)
   \[6\pi \eta av\]
  done clear
  D)
   \[\frac{\pi \eta v}{6{{a}^{3}}}\]
  done clear
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• question_answer13) A scientist proposes a new temperature scale in which the ice point is 25 X (X is the new unit of temperature) and the steam point is 305 X. The specific heat capacity of water in this new scale is \[(in\,J\,k{{g}^{-1}}\,{{X}^{-1}})\]
  A)
  \[4.2\,\,\times {{10}^{3}}\]
  done clear
  B)
  \[3.0\,\,\times {{10}^{3}}\]
  done clear
  C)
   \[1.2\,\,\times \,\,{{10}^{3}}\]
  done clear
  D)
   \[1.5\,\,\times \,{{10}^{3}}\]
  done clear
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• question_answer14) One mole of a van der Waals gas obeying the equation \[\left( p+\frac{a}{{{V}^{2}}} \right)(V-b)=RT\]Undergoes the quasi-static cyclic process which is shown in the p-V diagram. The net heat absorbed by the gas in this process is
  A)
   \[\frac{1}{2}({{\rho }_{1}}-{{\rho }_{2}})({{V}_{1}}-{{V}_{2}})\]
  done clear
  B)
   \[\frac{1}{2}({{\rho }_{1}}+{{\rho }_{2}})({{V}_{1}}-{{V}_{2}})\]
  done clear
  C)
   \[\frac{1}{2}\left( {{p}_{1}}+\frac{a}{V_{1}^{2}}-{{p}_{2}}-\frac{a}{V_{2}^{2}} \right)({{V}_{1}}-{{V}_{2}})\]
  done clear
  D)
   \[\frac{1}{2}\left( {{p}_{1}}+\frac{a}{V_{1}^{2}}+{{p}_{2}}+\frac{a}{V_{2}^{2}} \right)({{V}_{1}}-{{V}_{2}})\]
  done clear
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• question_answer15) A wooden block is floating on water kept in a beaker. 40% of the block is above the water surface. Now the beaker is kept inside a lift  that starts going upward with acceleration equal to g/2. The block will then
  A)
   sink
  done clear
  B)
   float with 10% above the water surface
  done clear
  C)
   float with 40% above the water surface
  done clear
  D)
   float with 70% above the water surface
  done clear
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• question_answer16) A smooth massless string passes over a smooth fixed pulley. Two masses \[{{m}_{1}}\]and \[{{m}_{2}},({{m}_{1}}>{{m}_{2}})\] are tied at the two ends of the string. The masses are allowed to move under gravity starting from rest. The total external force acting on the two masses is
  A)
  \[{{m}_{2}},({{m}_{1}}>{{m}_{2}})\]
  done clear
  B)
   \[\frac{{{({{m}_{1}}-{{m}_{2}})}^{2}}}{{{m}_{1}}+{{m}_{2}}}g\]
  done clear
  C)
   \[({{m}_{1}}-{{m}_{2}})g\]
  done clear
  D)
   \[\frac{{{({{m}_{1}}+{{m}_{2}})}^{2}}}{{{m}_{1}}-{{m}_{2}}}g\]
  done clear
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• question_answer17) To determine the coefficient of friction  between a rough surface and a block, the surface is kept inclined at \[{{45}^{o}}\] and the block is released from rest. The block takes a time t in moving a distance d. The rough surface is then replaced by a smooth surface and the same experiment is repeated. The block now takes a time 112 in moving down the same distance d. The coefficient of friction is
  A)
   3/4    
  done clear
  B)
   5/4    
  done clear
  C)
   1/2   
  done clear
  D)
   \[1/\sqrt{2}\]
  done clear
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• question_answer18) A metal rod is fixed rigidly at two ends so as to prevent its thermal expansion. If \[L,\alpha \]and Y respectively denote the length of the rod, coefficient of linear thermal expansion and Youngs modulus of its material, then for an increase in temperature of the rod by \[\Delta T,\]the longitudinal stress developed in the rod is
  A)
   inversely proportional to \[\alpha \]
  done clear
  B)
   inversely proportional to \[\gamma \]
  done clear
  C)
   directly proportional to \[\Delta T/\gamma \]
  done clear
  D)
   independent of L
  done clear
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• question_answer19) A particle is moving uniformly in a circular  path of radius r. When it moves through an angular displacement \[\theta ,\] then the magnitude of the corresponding linear displacement will be
  A)
   \[2r\,d\cos \left( \frac{\theta }{2} \right)\]
  done clear
  B)
   \[2r\,\cot \left( \frac{\theta }{2} \right)\]
  done clear
  C)
   \[2r\,\tan \left( \frac{\theta }{2} \right)\]
  done clear
  D)
   \[2r\,\sin \left( \frac{\theta }{2} \right)\]
  done clear
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• question_answer20) A uniform rod is suspended horizontally from its mid-point. A piece of metal whose weight is w is suspended at a distance \[l\] from the mid- point. Another weight \[{{W}_{1}}\]is suspended on the other side at a distance \[{{l}_{1}}\]the mid-point to bring the rod to a horizontal position. When \[\omega \]is completely immersed in water, \[{{\omega }_{1}}\]needs to be kept at a distance \[{{l}_{2}}\] from the mid-point to get the rod back into horizontal position. The specific gravity of the metal piece is
  A)
   \[\frac{w}{{{w}_{1}}}\]
  done clear
  B)
   \[\frac{w{{l}_{1}}}{wl-{{w}_{1}}{{l}_{2}}}\]
  done clear
  C)
   \[\frac{{{l}_{1}}}{{{l}_{1}}-{{l}_{2}}}\]
  done clear
  D)
   \[\frac{{{l}_{1}}}{{{l}_{2}}}\]
  done clear
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• question_answer21) A drop of some liquid of volume \[0.04\,c{{m}^{3}}\]is placed on the surface of a glass slide. Then another glass slide is placed on it in such a way that the liquid forms a thin layer of area \[20\,c{{m}^{2}}\]between the surfaces of the two slides. To separate the slides a force of \[16\times {{10}^{5}}\]dyne has to be applied normal to the surfaces. The surface tension of the liquid is (in dyne\[-\,c{{m}^{-1}}\])
  A)
   60   
  done clear
  B)
   70    
  done clear
  C)
   80    
  done clear
  D)
   90
  done clear
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• question_answer22) An electron in a circular orbit of radius 0.05 nm performs \[{{10}^{16}}\] revolutions per second. The magnetic moment due to this rotation of electron is \[(in\,A{{m}^{2}})\]
  A)
  \[2.16\times {{10}^{-23}}\]       
  done clear
  B)
   \[3.21\times {{10}^{-22}}\]
  done clear
  C)
   \[3.21\times {{10}^{-24}}\]
  done clear
  D)
   \[1.26\times {{10}^{-23}}\]
  done clear
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• question_answer23) A very small circular loop of radius a is initially (at\[t=0\]) coplanar and concentric with a much larger fixed circular loop of radius b. A constant current \[I\] flows in the larger loop. The smaller loop is rotated with a constant angular speed\[\omega \]about the common diameter. The emf induced in the smaller loop as a function of time t is
  A)
  \[\frac{\pi {{a}^{2}}{{\mu }_{0}}l}{2b}\omega \cos \,(\omega t)\]
  done clear
  B)
   \[\frac{\pi {{a}^{2}}{{\mu }_{0}}l}{2b}\omega \sin \,({{\omega }^{2}}{{t}^{2}})\]
  done clear
  C)
   \[\frac{\pi {{a}^{2}}{{\mu }_{0}}l}{2b}\omega \sin \,(\omega t)\]
  done clear
  D)
   \[\frac{\pi {{a}^{2}}{{\mu }_{0}}l}{2b}\omega {{\sin }^{2}}\,(\omega t)\]
  done clear
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• question_answer24) A luminous object is separated from a screen by distance d. A convex lens is placed between the object and the screen such that it forms a distinct image on the screen. The maximum possible focal length of this convex lens is
  A)
   \[4d\]
  done clear
  B)
   \[2d\]
  done clear
  C)
   \[\frac{d}{2}\]
  done clear
  D)
   \[\frac{d}{4}\]
  done clear
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• question_answer25) An infinite sheet carrying a uniform surface charge density \[\sigma \] lies on the \[xy-\]plane. The work done to carry  a charge q from the point \[A=a(\hat{i}+2\hat{j}+3\hat{k})\]to the point \[A=a(\hat{i}+2\hat{j}+3\hat{k})\](where a is a constant with the dimension of length and \[{{\varepsilon }_{0}}\]is the permittivity of free space) is
  A)
   \[\frac{3\sigma aq}{2{{\varepsilon }_{0}}}\]
  done clear
  B)
   \[\frac{2\sigma aq}{{{\varepsilon }_{0}}}\]
  done clear
  C)
   \[\frac{5\sigma aq}{2{{\varepsilon }_{0}}}\]
  done clear
  D)
   \[\frac{3\sigma aq}{{{\varepsilon }_{0}}}\]
  done clear
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• question_answer26) The intensity of magnetization of a bar magnet is \[5.0\times {{10}^{4}}A{{m}^{-1}}.\] The magnetic length and the area of cross-section of the magnet are 12 cm and \[1\text{ }c{{m}^{2}}\]respectively. The magnitude of magnetic moment of this bar magnet is (in SI unit)
  A)
   0.6    
  done clear
  B)
   1.3   
  done clear
  C)
   1.24
  done clear
  D)
   2.4
  done clear
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• question_answer27) A particle moves with constant acceleration along a straight line starting from rest. The percentage increase in its displacement  during the 4th second compared to that in the 3rd second is
  A)
   33%   
  done clear
  B)
   40%   
  done clear
  C)
   66%  
  done clear
  D)
   77%
  done clear
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• question_answer28) A proton of mass m and charge q is moving in a plane with kinetic energy E. If there exists a uniform magnetic field B, perpendicular to the plane of the motion, the proton will move in a circular path of radius
  A)
   \[\frac{2Em}{qB}\]
  done clear
  B)
   \[\frac{\sqrt{2Em}}{qB}\]
  done clear
  C)
   \[\frac{\sqrt{Em}}{2qB}\]
  done clear
  D)
   \[\frac{\sqrt{2Eq}}{mB}\]
  done clear
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• question_answer29) An artificial satellite moves in a circular orbit around the earth. Total energy of the satellite is given by E. The potential energy of the satellite is
  A)
   \[-2E\]
  done clear
  B)
   \[2E\]
  done clear
  C)
   \[\frac{2E}{3}\]
  done clear
  D)
   \[-\frac{2E}{3}\]
  done clear
  View Answer play_arrow

• question_answer30) In which of the following phenomena, the heat waves travel along straight lines with the speed of light?
  A)
   Thermal conduction
  done clear
  B)
   Forced convection
  done clear
  C)
   Natural convection
  done clear
  D)
   Thermal radiation
  done clear
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• question_answer31) In the bandgap between valence band and conduction band in a material is 5.0 eV, then  the material is
  A)
   semiconductor    
  done clear
  B)
   good conductor
  done clear
  C)
   superconductor   
  done clear
  D)
   insulator
  done clear
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• question_answer32) A uniform solid spherical ball is rolling down a smooth inclined plane from a height \[h.\]The velocity attained by the ball when it reaches the bottom of the inclined plane is \[\upsilon .\]If the ball is now thrown vertically upwards with the same velocity \[\upsilon ,\]the maximum height to which the ball will rise is
  A)
   \[\frac{5h}{8}\]
  done clear
  B)
   \[\frac{3h}{5}\]
  done clear
  C)
   \[\frac{5h}{7}\]
  done clear
  D)
   \[\frac{7h}{9}\]
  done clear
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• question_answer33) Two coherent monochromatic beams of intensities \[I\]and \[4I\] respectively are superposed. The maximum and minimum intensities in the resulting pattern are
  A)
  \[5l\]and\[3l\]          
  done clear
  B)
  \[9l\] and\[3l\]
  done clear
  C)
  \[4l\] and\[l\]         
  done clear
  D)
  \[9l\]and\[l\]
  done clear
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• question_answer34) In the circuit shown assume the diode to be ideal. When \[{{V}_{i}}\]increases from 2V to 6 V, the change in the current is (in mA)
  A)
   zero
  done clear
  B)
   20
  done clear
  C)
   \[80/3\]
  done clear
  D)
   40
  done clear
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• question_answer35) If n denotes a positive integer, h the Plancks constant, q the charge and B the magnetic field, then the quantity \[\left[ \frac{nh}{2\pi qB} \right]\] has the dimension of
  A)
   area               
  done clear
  B)
   length
  done clear
  C)
   speed             
  done clear
  D)
   acceleration
  done clear
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• question_answer36) In  a  transistor  output  characteristics commonly   used   in   common   emitter configuration, the base current \[{{I}_{B}},\]the collector current \[{{I}_{C}}\] and the collector-emittes   voltage\[{{V}_{CE}}\] have values of the following orders of magnitude in the active region
  A)
   \[{{l}_{B}}\]and\[{{l}_{C}}\]both are in \[\mu A\]and \[{{V}_{CE}}\]in volt
  done clear
  B)
   \[{{l}_{B}}\]is in \[\mu A\]and\[{{l}_{C}}\] is in mA and \[{{V}_{CE}}\]in volt
  done clear
  C)
   \[{{l}_{B}}\]is in mA and \[{{l}_{C}}\] is in \[{{l}_{C}}\]and \[{{V}_{CE}}\]in volt
  done clear
  D)
   \[{{l}_{B}}\] is in mA and \[{{l}_{C}}\]is in mA and\[{{V}_{CE}}\] in mV
  done clear
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• question_answer37) The displacement of a particle in a periodic motion is given by \[y=4{{\cos }^{2}}\left( \frac{t}{2} \right)\sin (1000t).\]This displacement may be considered as the result of superposition of\[n\]independent harmonic oscillations. Here \[n\] is
  A)
   1       
  done clear
  B)
   2       
  done clear
  C)
   3       
  done clear
  D)
   4
  done clear
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• question_answer38) Consider a black body radiation in a cubical box at absolute temperature T. If the length of each side of the box is doubled and the temperature of the walls of the box and that of the radiation is halved, then the total energy
  A)
   halves           
  done clear
  B)
   doubles
  done clear
  C)
   quadruples       
  done clear
  D)
   remains the same
  done clear
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• question_answer39) Consider two concentric spherical metal shells of radii \[{{r}_{1}}\] and \[{{r}_{2}}({{r}_{2}}>{{r}_{1}}).\]If the outer shell has a charge q and the inner one is grounded, the charge on the inner shell is
  A)
   \[\frac{-{{r}_{2}}}{{{r}_{1}}}q\]
  done clear
  B)
   zero
  done clear
  C)
   \[\frac{-{{r}_{1}}}{{{r}_{2}}}q\]
  done clear
  D)
   \[-q\]
  done clear
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• question_answer40) Four cells, each of emf E and internal resistance r, are connected in series across an external resistance R. By mistake one of the cells is connected in reverse. Then the current in the external circuit is
  A)
   \[\frac{2E}{4r+R}\]
  done clear
  B)
   \[\frac{3E}{4r+R}\]
  done clear
  C)
   \[\frac{3E}{3r+R}\]
  done clear
  D)
   \[\frac{2E}{3r+R}\]
  done clear
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• question_answer41) Same quantity of ice is filled in each of the two metal containers P and Q having the same size, shape and wall thickness but made of different materials. The containers are kept in identical surroundings. The ice in P melts completely in time \[{{t}_{1}}\]whereas in Q takes a time \[{{t}_{2}}.\]The ratio of thermal conductivities of the materials of P and Q is
  A)
   \[{{t}_{2}}:{{t}_{1}}\]
  done clear
  B)
   \[{{t}_{1}}:{{t}_{2}}\]
  done clear
  C)
   \[t_{1}^{2}:t_{2}^{2}\]
  done clear
  D)
   \[t_{2}^{2}:t_{1}^{2}\]
  done clear
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• question_answer42) For the radioactive nuclei that undergo either \[\alpha \]or\[\beta \] decay, which one of the following cannot occur?
  A)
   Isobar of original nucleus is produced
  done clear
  B)
   Isotope of the original nucleus is produced
  done clear
  C)
   Nuclei with higher atomic number than that of the original nucleus is produced
  done clear
  D)
   Nuclei with lower atomic number than that of the original nucleus is produced
  done clear
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• question_answer43) A car is moving with a speed of \[72\,km-{{h}^{-1}}\]towards a roadside source that emits sound at a frequency of 850 Hz. The car driver listens to the sound while approaching the source and again while moving away from the source after crossing it. If the velocity of sound is \[340\,m{{s}^{-1}},\] the difference of the two frequencies, the  driver hears is
  A)
   50 Hz
  done clear
  B)
   85 Hz 
  done clear
  C)
   100 Hz
  done clear
  D)
   150 Hz
  done clear
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• question_answer44) The energy of gamma \[(\gamma )\] ray photon is \[{{E}_{\gamma }}\]and that of an X-ray photon is \[{{E}_{x}}.\]If the visible light photon has an energy of \[{{E}_{\upsilon }},\] then we can say that
  A)
   \[{{E}_{x}}{{E}_{\gamma }}{{E}_{v}}\]
  done clear
  B)
   \[{{E}_{\gamma }}>{{E}_{v}}>{{E}_{x}}\]
  done clear
  C)
   \[{{E}_{\gamma }}>{{E}_{x}}>{{E}_{v}}\]
  done clear
  D)
   \[{{E}_{x}}>{{E}_{v}}>{{E}_{\gamma }}\]
  done clear
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• question_answer45) The intermediate image formed by the objective of a compound microscope is
  A)
   real, inverted and magnified
  done clear
  B)
   real, erect and magnified
  done clear
  C)
   virtual, erect and magnified
  done clear
  D)
   virtual, inverted and magnified
  done clear
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• question_answer46) A solid uniform sphere resting on a rough horizontal plane is given a horizontal impulse directed through its centre so that it starts sliding with an initial velocity \[{{\upsilon }_{0}}.\]When it  finally starts rolling without slipping the speed of its centre is
  A)
   \[\frac{2}{7}{{v}_{0}}\]
  done clear
  B)
   \[\frac{3}{7}{{v}_{0}}\]
  done clear
  C)
   \[\frac{5}{7}{{v}_{0}}\]
  done clear
  D)
   \[\frac{6}{7}{{v}_{0}}\]
  done clear
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• question_answer47) The de-Broglie wavelength of an electron is the same as that of a \[\text{50}\,\text{ke}\,\text{V}\]X-ray photon. The ratio of the energy of the photon to the kinetic energy of the electron is (the energy equivalent of electron mass is 0.5 MeV)
  A)
   1 : 50           
  done clear
  B)
   1 : 20
  done clear
  C)
   20 :1            
  done clear
  D)
   50 : 1
  done clear
  View Answer play_arrow

• question_answer48) A glass slab consists of thin uniform layers of  progressively decreasing refractive indices \[\text{RI}\] (see figure) such that the \[\text{RI}\]of any layer is \[\mu -m\,\Delta \mu .\]Here, \[\mu \]and \[\Delta \mu \]denote the \[\text{RI}\]of 0th layer and the difference in RI between any two consecutive layers, respectively. The integer \[m=0,1,2,3,...\]denotes the numbers   of the successive layers. A ray of light from the 0th layer enters the 1st  layer at an angle of incidence of \[{{30}^{o}}.\] After undergoing the \[mth\]refraction, the ray emerges parallel to the interface. If \[\mu =1.5\]and \[\Delta \mu =0.015,\]the value of\[m\]is
  A)
   20
  done clear
  B)
   30
  done clear
  C)
   40
  done clear
  D)
   50
  done clear
  View Answer play_arrow

• question_answer49) A long conducting wire carrying a current I is  bent at 120° (see figure). The magnetic field B at a point P on the right bisector of bending angle at a distance d from the bend is (\[{{\mu }_{0}}\] is the permeability of free space)
  A)
   \[\frac{3{{\mu }_{0}}l}{2\pi d}\]
  done clear
  B)
   \[\frac{{{\mu }_{0}}l}{2\pi d}\]
  done clear
  C)
   \[\frac{{{\mu }_{0}}l}{\sqrt{3}\pi d}\]
  done clear
  D)
   \[\frac{\sqrt{3}{{\mu }_{0}}l}{2\pi d}\]
  done clear
  View Answer play_arrow

• question_answer50) A circuit consists of three batteries of emf \[{{E}_{1}}=1\,V,{{E}_{2}}=2\,V\]and \[{{E}_{3}}=3\,V\]and internal resistances \[1\,\Omega ,\,2\,\Omega \] and\[1\,\Omega \]respectively which are connected in parallel as shown in the figure. The potential difference between  points P and Q is
  A)
   1.0 V    
  done clear
  B)
   2.0 V    
  done clear
  C)
   2.2 V   
  done clear
  D)
   3.0 V
  done clear
  View Answer play_arrow

• question_answer51) Sound waves are passing through two routes-one in straight path and the other along a semicircular path of radius r and are again combined into one pipe and superposed as shown in the figure. If the velocity of sound waves in the pipe is \[\upsilon ,\]then frequencies of resultant waves of maximum amplitude will be integral multiples of
  A)
   \[\frac{v}{r(\pi -2)}\]
  done clear
  B)
   \[\frac{v}{r(\pi -1)}\]
  done clear
  C)
   \[\frac{2v}{r(\pi -1)}\]
  done clear
  D)
   \[\frac{v}{r(\pi +1)}\]
  done clear
  View Answer play_arrow

• question_answer52) To determine the composition of a bimetallic alloy, a sample is first weighed in air and then in water. These weights are found to be \[{{\omega }_{1}}\]and \[{{\omega }_{2}}\]respectively. If the densities of the two constituents metals are \[{{\rho }_{1}}\]and \[{{\rho }_{2}}\]respectively, then the weight of the first metal in the sample is (where \[{{\rho }_{\omega }}\]is the density of water)
  A)
   \[\frac{{{\rho }_{1}}}{{{\rho }_{w}}({{\rho }_{2}}-{{\rho }_{1}})}[{{w}_{1}}({{\rho }_{2}}-{{\rho }_{w}})-{{w}_{2}}{{\rho }_{2}}]\]
  done clear
  B)
   \[\frac{{{\rho }_{1}}}{{{\rho }_{w}}({{\rho }_{2}}+{{\rho }_{1}})}[{{w}_{1}}({{\rho }_{2}}-{{\rho }_{w}})+{{w}_{2}}{{\rho }_{2}}]\]
  done clear
  C)
   \[\frac{{{\rho }_{1}}}{{{\rho }_{w}}({{\rho }_{2}}-{{\rho }_{1}})}[{{w}_{1}}({{\rho }_{2}}+{{\rho }_{w}})-{{w}_{2}}{{\rho }_{1}}]\]
  done clear
  D)
   \[\frac{{{\rho }_{1}}}{{{\rho }_{w}}({{\rho }_{2}}-{{\rho }_{1}})}[{{w}_{1}}({{\rho }_{2}}-{{\rho }_{w}})-{{w}_{2}}{{\rho }_{1}}]\]
  done clear
  View Answer play_arrow

• question_answer53) A 10 W electric heater is used to heat a container filled with 0.5 kg of water. It is found that the temperature of water and the container rises by \[{{3}^{o}}K\]in 15 min. The container is then emptied, dried and filled with 2 kg of oil. The Same heater now raises the temperature of container-oil system by \[{{2}^{o}}K\]in 20 min. Assuming that there is no heat loss in the process and the specific heat of water is \[4200\,J\,k{{g}^{-1}}{{K}^{-1}},\] the specific heat of oil in the same unit is equal to
  A)
  \[1.50\,\,\times \,\,{{10}^{3}}\]
  done clear
  B)
  \[2.55\,\,\times \,\,{{10}^{3}}\]
  done clear
  C)
  \[3.00\,\,\times \,\,{{10}^{3}}\]
  done clear
  D)
   \[5.10\,\,\times \,\,{{10}^{3}}\]
  done clear
  View Answer play_arrow

• question_answer54) An object is placed 30 cm away from a convex lens of focal length 10 cm and a sharp image is formed on a screen. Now a concave lens is placed in contact with the convex lens. The screen now has to be moved by 45 cm to get a sharp image again. The magnitude of focal length of the concave lens is (in cm)
  A)
   72    
  done clear
  B)
   60    
  done clear
  C)
   36
  done clear
  D)
   20
  done clear
  View Answer play_arrow

• question_answer55) Three identical square plates rotate about the axes shown in the figure in such a way that  their kinetic energies are equal. Each of the rotation axes passes through the centre of the square. Then the ratio of angular speeds\[{{\omega }_{1}}:{{\omega }_{2}}:{{\omega }_{3}}\]is
  A)
   \[1:1:1\]
  done clear
  B)
  \[\sqrt{2}:\sqrt{2}:1\]
  done clear
  C)
   \[1:\sqrt{2}:1\]
  done clear
  D)
   \[1:2:\sqrt{2}\]
  done clear
  View Answer play_arrow

• question_answer56) A heating element of resistance r is fitted inside an adiabatic cylinder which carries a frictionless piston of mass m and cross-section A as shown in diagram. The cylinder contains one mole of an ideal diatomic    gas.    The current flows through the element such that the temperatures rises with time t as \[\Delta t=\alpha t+\frac{1}{2}\beta {{t}^{2}}\] (\[\alpha \]and\[\beta \]are constants), while pressure remains constant. The atmospheric pressure above the piston is \[{{P}_{0}}.\]Then
  A)
   the rate of increase in internal energy is\[\frac{5}{2}R(\alpha +\beta t)\]
  done clear
  B)
   the current flowing in the element is \[\sqrt{\frac{5}{2r}R(\alpha +\beta t)}\]
  done clear
  C)
   the piston moves upwards with constant acceleration
  done clear
  D)
   the piston moves upwards with constant speed
  done clear
  View Answer play_arrow

• question_answer57) A thin rod AB is held horizontally so that it can freely rotate in a vertical plane about the end A as shown in the figure. The potential energy of the rod when it hangs vertically is taken to be zero. The end B of the rod is released from rest from a horizontal position. At the instant the rod makes an angle \[\theta \] with the horizontal
  A)
   the speed of end B is proportional to \[\sqrt{\sin \theta }\]
  done clear
  B)
   the potential energy is proportional to \[(1-cos\,\theta )\]
  done clear
  C)
   the angular acceleration is proportional to \[cos\,\theta \]
  done clear
  D)
   the torque about A remains the same as its initial value
  done clear
  View Answer play_arrow

• question_answer58) Find the correct statement(s) about photoelectric effect.            
  A)
   There is no significant time delay between the absorption of a suitable radiation and the emission of electrons
  done clear
  B)
   Einstein analysis gives a threshold frequency above which no electron can be emitted
  done clear
  C)
   The maximum kinetic energy of the emitted photoelectrons is proportional to the frequency of incident radiation
  done clear
  D)
   The maximum kinetic energy of electrons does not depend on the intensity of radiation
  done clear
  View Answer play_arrow

• question_answer59) Half of the space between the plates of a parallel-plate capacitor is filled with a dielectric material of dielectric constant K.  The remaining half contains air as shown in the figure. The capacitor is now given a charge Q. Then
  A)
   electric field in the dielectric-filled region is higher than that in the air-filled region
  done clear
  B)
   on the two halves of the bottom plate the charge densities are unequal
  done clear
  C)
   charge on the half of the top plate above the air-filled part is\[\frac{Q}{K+1}\]
  done clear
  D)
   capacitance of the capacitor shown above is\[(1+K)\frac{{{C}_{0}}}{2},\]where \[{{C}_{0}}\]is the capacitance of the same capacitor with the dielectric removed.
  done clear
  View Answer play_arrow

• question_answer60) A stream of electrons and protons are directed towards a narrow slit in a screen (see figure). The intervening region has a uniform electric field E (vertically downwards) and a uniform magnetic field B (out of the plane of the figure) as shown. Then
  A)
   electrons and protons with speed \[\frac{|E|}{|B|}\]will pass through the slit
  done clear
  B)
   protons with speed \[|E|/|B|\] will pass through the slit, electrons of the same speed will not                
  done clear
  C)
   neither electrons nor protons will go through the slit irrespective of their speed                         
  done clear
  D)
   electrons will always be deflected upwards  irrespective of their speed     
  done clear
  View Answer play_arrow

• question_answer61) The emission spectrum of hydrogen discovered first and the region of the electromagnetic spectrum in which it belongs, respectively are
  A)
   Lyman, ultraviolet  
  done clear
  B)
   Lyman, visible
  done clear
  C)
   Balmer, ultraviolet  
  done clear
  D)
   Balmer, visible
  done clear
  View Answer play_arrow

• question_answer62) The electronic configuration of Cu is
  A)
   \[\text{ }\!\![\!\!\text{ }Me\text{ }\!\!]\!\!\text{  }3{{s}^{2}},3{{p}^{6}},3{{d}^{9}},4{{s}^{2}}\]
  done clear
  B)
   \[\text{ }\!\![\!\!\text{ N}e\text{ }\!\!]\!\!\text{  }3{{s}^{2}},3{{p}^{6}},3{{d}^{10}},4{{s}^{1}}\]
  done clear
  C)
   \[\text{ }\!\![\!\!\text{ N}e\text{ }\!\!]\!\!\text{  }3{{s}^{2}},3{{p}^{6}},3{{d}^{3}},4{{s}^{2}},4{{p}^{6}}\]
  done clear
  D)
   \[\text{ }\!\![\!\!\text{ N}e\text{ }\!\!]\!\!\text{  }3{{s}^{2}},3{{p}^{6}},3{{d}^{5}},4{{s}^{2}},4{{p}^{4}}\]
  done clear
  View Answer play_arrow

• question_answer63) As per de-Broglies formula a macroscopic particle of mass 100 g and moving at a velocity of \[100\,cm\,{{s}^{-1}}\] will have a wavelength of
  A)
  \[6.6\times {{10}^{-29}}cm\]     
  done clear
  B)
  \[6.6\times {{10}^{-30}}cm\]
  done clear
  C)
  \[6.6\times {{10}^{-31}}cm\]     
  done clear
  D)
   \[6.6\times {{10}^{-32}}cm\]
  done clear
  View Answer play_arrow

• question_answer64) For one mole of an ideal gas, the slope of \[V\upsilon s.\]T curve at constant pressure of 2 aim is \[X\,L\,mo{{l}^{-1}}\,{{K}^{-1}}.\]The value of the ideal universal gas constant R in terms of X is
  A)
  \[X\text{ }L\text{ }atm\text{ }mo{{l}^{-1}}{{K}^{-1}}\]  
  done clear
  B)
   \[\frac{X}{2}\text{ }L\text{ }atm\text{ }mo{{l}^{-1}}{{K}^{-1}}\]
  done clear
  C)
  \[2X\text{ }L\text{ }atm\text{ }mo{{l}^{-1}}{{K}^{-1}}\] 
  done clear
  D)
   \[2X\,atm\,{{L}^{-1}}\,mo{{l}^{-1}}{{K}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer65) At a certain temperature the time required for the complete diffusion of 200 mL of \[{{H}_{2}}\]gas is 30min. The time required for the complete diffusion of 50 mL of \[{{O}_{2}}\]gas at the same temperature will be
  A)
   60 min            
  done clear
  B)
   30 min
  done clear
  C)
   45 min            
  done clear
  D)
   15min
  done clear
  View Answer play_arrow

• question_answer66) The IUPAC name of the following molecule is
  A)
   5, 6-dimethylhept-2-ene
  done clear
  B)
   2, 3-dimethylhept-5-ene
  done clear
  C)
   5, 6-dimethylhept-3-ene
  done clear
  D)
   5-iso-propylhex-2-ene
  done clear
  View Answer play_arrow

• question_answer67) The reagents to carry out the following conversion are
  A)
   \[HgS{{O}_{4}}/dil.{{H}_{2}}S{{O}_{4}}\]
  done clear
  B)
   \[B{{H}_{3}};{{H}_{2}}{{O}_{2}}/NaOH\]
  done clear
  C)
   \[Os{{O}_{4}};HI{{O}_{4}}\]
  done clear
  D)
   \[NaN{{H}_{2}}/C{{H}_{3}}l;HgS{{O}_{4}}/dil.{{H}_{2}}S{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer68) The correct order of decreasing H-C-H angle in the following molecule is
  A)
   I > II > III
  done clear
  B)
   II > I > III
  done clear
  C)
   III > II > I
  done clear
  D)
   I > III > II
  done clear
  View Answer play_arrow

• question_answer69) During the emission of a positron from a nucleus, the mass number of the daughter element remains the same but the atomic number
  A)
   is decreased by 1 unit
  done clear
  B)
   is decreased by 2 units
  done clear
  C)
   is increased by 1 unit
  done clear
  D)
   remains unchanged
  done clear
  View Answer play_arrow

• question_answer70) \[\beta -\]emission is always accompanied by
  A)
   formation of antineutrino and \[\alpha -\]particle
  done clear
  B)
   emission of \[\alpha -\]particle and \[\gamma -\]ray
  done clear
  C)
   formation of antineutrino and \[\gamma -\]ray
  done clear
  D)
   formation of antineutrino and positron
  done clear
  View Answer play_arrow

• question_answer71) Four gases P, Q, R and S have almost same values of b but their a values (a, b are van der Waals constants)  are  in  the  order Q  R < S < P. At a particular temperature,  among the four gases, the most easily liquefiable one is
  A)
   P     
  done clear
  B)
   0     
  done clear
  C)
   R     
  done clear
  D)
   S
  done clear
  View Answer play_arrow

• question_answer72) Among the following structures the one which is not a resonating structure of others is (I) (II) (III) (IV)
  A)
   I
  done clear
  B)
   II
  done clear
  C)
   III
  done clear
  D)
   IV
  done clear
  View Answer play_arrow

• question_answer73) The compound that will have a permanent dipole moment among the following is
  A)
   
  done clear
  B)
     
  done clear
  C)
   
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer74) The correct order of decreasing length of the bond as indicated by the arrow in the following structures is
  A)
   I > II > III
  done clear
  B)
   II > I > III
  done clear
  C)
   III > II > I
  done clear
  D)
   I > III > II
  done clear
  View Answer play_arrow

• question_answer75) An atomic nucleus having low n/p ratio tries to find stability by
  A)
   the emission of an a-particle
  done clear
  B)
   the emission of a positron
  done clear
  C)
   capturing an orbital electron (K-electron capture)
  done clear
  D)
   emission of a p-particle
  done clear
  View Answer play_arrow

• question_answer76) \[({{\,}_{32}}G{{e}^{76}}{{,}_{34}}S{{e}^{76}})\]and \[({{\,}_{14}}S{{i}^{30}}{{,}_{16}}{{S}^{32}})\] are examples of
  A)
   isotopes and isobars
  done clear
  B)
   isobars and isotones
  done clear
  C)
   isotones and isotopes
  done clear
  D)
   isobars and isotopes
  done clear
  View Answer play_arrow

• question_answer77) \[_{98}C{{f}^{246}}\]was formed along with a neutron when an unknown radioactive substance was bombarded with \[{{\,}_{6}}{{C}^{12}}.\]The unknown substance was
  A)
   \[{{\,}_{91}}P{{a}^{234}}\]
  done clear
  B)
   \[{{\,}_{90}}T{{h}^{234}}\]
  done clear
  C)
   \[{{\,}_{92}}{{U}^{235}}\]
  done clear
  D)
   \[{{\,}_{92}}{{U}^{238}}\]
  done clear
  View Answer play_arrow

• question_answer78) The rate of a certain reaction is given by, rate \[=k{{[{{H}^{+}}]}^{n}}.\] The rate increases 100 times when the pH changes from 3 to 1. The order \[(n)\] of the reaction is
  A)
   2      
  done clear
  B)
   0     
  done clear
  C)
   1     
  done clear
  D)
   1.5
  done clear
  View Answer play_arrow

• question_answer79) The values of \[\Delta H\]and \[\Delta S\]of a certain reaction are  \[-400\,kJ\,mo{{l}^{-1}}\]  and  \[-20\,kJ\,mo{{l}^{-1}}{{K}^{-1}}\] respectively. The temperature below which the reaction is spontaneous, is
  A)
   100 K  
  done clear
  B)
  \[20{{\,}^{o}}C\]  
  done clear
  C)
   20 K  
  done clear
  D)
  \[120{{\,}^{o}}C\]
  done clear
  View Answer play_arrow

• question_answer80) The correct statement regarding the following compounds is
  A)
   all three compounds are chiral
  done clear
  B)
   only I and II are chiral
  done clear
  C)
   I and III are diastereomers
  done clear
  D)
   only I and III are chiral
  done clear
  View Answer play_arrow

• question_answer81) The correct statement regarding the following energy diagrams is
  A)
   Reaction M is faster and less exothermic than reaction N
  done clear
  B)
   Reaction M is slower and less exothermic than reaction N
  done clear
  C)
   Reaction M is faster and more exothermic than reaction N
  done clear
  D)
   Reaction M is slower and more exothermic than reaction N
  done clear
  View Answer play_arrow

• question_answer82) In the following reaction, the product E is \[\underset{CHO}{\overset{CHO}{\mathop{|}}}\,\xrightarrow[(ii)\,{{H}^{+}}]{(i)\,NaOH}E\]
  A)
   \[\underset{CHO}{\mathop{\underset{|}{\mathop{C{{H}_{2}}OH}}\,}}\,\]
  done clear
  B)
   \[\underset{C{{O}_{2}}H}{\overset{CHO}{\mathop{|}}}\,\]
  done clear
  C)
   \[\underset{C{{O}_{2}}H}{\overset{C{{H}_{2}}OH}{\mathop{|}}}\,\]
  done clear
  D)
   \[\underset{C{{O}_{2}}H}{\overset{C{{O}_{2}}H}{\mathop{|}}}\,\]
  done clear
  View Answer play_arrow

• question_answer83) If \[C{{l}_{2}}\]is passed through hot aqueous NaOH, the products formed have Cl in different oxidation states. These are indicated as
  A)
   \[-1\]and\[+1\]       
  done clear
  B)
  \[-1\] and\[+5\]
  done clear
  C)
   \[+\,1\]and \[+\,5\]      
  done clear
  D)
   \[-1\] and \[+\,3\]
  done clear
  View Answer play_arrow

• question_answer84) Commercial sample of \[{{H}_{2}}{{O}_{2}}\]is labeled as \[10\,V.\] Its % strength is nearly
  A)
   3     
  done clear
  B)
   6      
  done clear
  C)
   9     
  done clear
  D)
   12
  done clear
  View Answer play_arrow

• question_answer85) The enthalpy of vaporisation of a certain liquid at its boiling point of \[35{{\,}^{o}}C\]is \[24.64\,kJ\,mo{{l}^{-1}}.\] The value of change in entropy for the process is
  A)
   \[704\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
  done clear
  B)
   \[80\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
  done clear
  C)
   \[24.64\,J{{K}^{-1}}mo{{l}^{-1}}\]
  done clear
  D)
   \[7.04\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer86) Given that \[C+{{O}_{2}}\xrightarrow{{}}C{{O}_{2}};\Delta {{H }^{o}}=-x\,kJax\] \[2CO+{{O}_{2}}\xrightarrow{{}}2C{{O}_{2}};\Delta {{H}^{o}}=-y\,kJ\] The heat of formation of carbon monoxide will be
  A)
   \[\frac{y-2x}{2}\]
  done clear
  B)
   \[y+2x\]
  done clear
  C)
   \[2x-y\]
  done clear
  D)
   \[\frac{2x-y}{2}\]
  done clear
  View Answer play_arrow

• question_answer87) The intermediate J in the following Wittig reaction is
  A)
   
  done clear
  B)
   
  done clear
  C)
   
  done clear
  D)
     
  done clear
  View Answer play_arrow

• question_answer88) Among the following compounds, the one(s) that gives (give) effervescence with aqueous \[NaHC{{O}_{3}}\]solution is (are) \[\underset{\text{I}}{\mathop{{{\text{(C}{{\text{H}}_{\text{3}}}\text{CO)}}_{\text{2}}}\text{O}}}\,\,\,\underset{\text{II}}{\mathop{\,\,\text{C}{{\text{H}}_{\text{3}}}\text{COOH}\,\,\,\underset{\text{III}}{\mathop{\text{PhOH}}}\,\,\,}}\,\,\underset{\text{IV}}{\mathop{\text{C}{{\text{H}}_{\text{3}}}\text{COCHO}}}\,\]
  A)
   I and II             
  done clear
  B)
   I and III
  done clear
  C)
   Only II             
  done clear
  D)
   I and IV
  done clear
  View Answer play_arrow

• question_answer89) The 4th higher homologue of ethane is
  A)
   butane
  done clear
  B)
   pentane
  done clear
  C)
   hexane
  done clear
  D)
   heptane
  done clear
  View Answer play_arrow

• question_answer90) In case of heteronuclear diatomics of the type AB, where A is more electronegative than B, bonding molecular orbital resembles the character of A more than that of B. The statement
  A)
   is false
  done clear
  B)
   is true
  done clear
  C)
   cannot be evaluated since data is not sufficient
  done clear
  D)
   is true only for certain systems
  done clear
  View Answer play_arrow

• question_answer91) The hydrides of the first elements in groups 15-17, namely\[N{{H}_{3}},{{H}_{2}}O\]and HF respectively show abnormally high values for melting and boiling points. This is due to
  A)
   small size of N, O and F
  done clear
  B)
   the ability to form extensive intermolecular H-bonding
  done clear
  C)
   the ability to form extensive intramolecular H-bonding
  done clear
  D)
   effective van der Waals interaction
  done clear
  View Answer play_arrow

• question_answer92) The quantity of electricity needed to separately electrolyze 1 M solution of \[ZnS{{O}_{4}},AlC{{l}_{3}}\]and \[AgN{{O}_{3}}\]completely is in the ratio of
  A)
   2 : 3 : 1              
  done clear
  B)
   2 : 1 : 1
  done clear
  C)
   2 : 1 : 3              
  done clear
  D)
   2 : 2 : 1
  done clear
  View Answer play_arrow

• question_answer93) The amount of electrolytes required to coagulate a given amount of \[AgI\]colloidal solution (-ve charge) will be in the order
  A)
   \[NaN{{O}_{3}}>A{{l}_{2}}{{(N{{O}_{3}})}_{3}}>Ba{{(N{{O}_{3}})}_{2}}\]
  done clear
  B)
   \[A{{l}_{2}}{{(N{{O}_{3}})}_{3}}>Ba{{(N{{O}_{3}})}_{2}}>NaN{{O}_{3}}\]
  done clear
  C)
   \[A{{l}_{2}}{{(N{{O}_{3}})}_{3}}>NaN{{O}_{3}}>Ba{{(N{{O}_{3}})}_{2}}\]
  done clear
  D)
   \[NaN{{O}_{3}}>Ba{{(N{{O}_{3}})}_{2}}>A{{l}_{2}}{{(N{{O}_{3}})}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer94) The value of \[\Delta H\]for cooling 2 mole of an ideal monoatomic gas from \[225{{\,}^{o}}C\]to \[125{{\,}^{o}}C\]at  constant pressure will be [given \[{{C}_{p}}=\frac{5}{2}R\]]
  A)
   250 R
  done clear
  B)
   \[-500\,R\]
  done clear
  C)
   \[500\,R\]
  done clear
  D)
   \[-250\,R\]
  done clear
  View Answer play_arrow

• question_answer95) An amine \[{{C}_{3}}{{H}_{9}}N\]reacts with benzene sulphonyl chloride to form a white precipitate which is insoluble in aq. NaOH. The amine is
  A)
   
  done clear
  B)
   
  done clear
  C)
   
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer96) The number of amino acids and number of peptide bonds in a linear tetrapeptide (made of different amino acids) are respectively
  A)
   4 and 4           
  done clear
  B)
   5 and 5
  done clear
  C)
   5 and 4           
  done clear
  D)
   4 and 3
  done clear
  View Answer play_arrow

• question_answer97) Among the following, the one which is not a greenhouse gas, is
  A)
   \[N{{O}_{2}}\]
  done clear
  B)
  \[C{{O}_{2}}\]
  done clear
  C)
   \[C{{H}_{4}}\]
  done clear
  D)
   \[{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer98) The \[\text{pH}\]of \[{{10}^{-4}}\,\text{M}\,\text{KOH}\]solution will be
  A)
   4     
  done clear
  B)
   11     
  done clear
  C)
   10.5   
  done clear
  D)
   10
  done clear
  View Answer play_arrow

• question_answer99) The system that contains the maximum number of atoms is
  A)
  \[4.25\text{ }g\text{ of }N{{H}_{3}}\]     
  done clear
  B)
   \[8\,g\,\text{of}\,{{\text{O}}_{2}}\]
  done clear
  C)
  \[2g\,\text{of}\,{{H}_{2}}\]           
  done clear
  D)
   \[4\text{ }g\,\text{of }He\]
  done clear
  View Answer play_arrow

• question_answer100) Among the following observations, the correct one that differentiates between \[SO_{3}^{2-}\]and \[SO_{4}^{2-}\]is
  A)
   both form precipitate with \[BaC{{l}_{2}},SO_{3}^{2-}\]dissolves in HCI but \[SO_{4}^{2-}\]does not
  done clear
  B)
   \[SO_{3}^{2-}\]forms precipitate with \[BaC{{l}_{2}},SO_{4}^{2-}\]does not
  done clear
  C)
   \[SO_{4}^{2-}\]forms precipitate with \[BaC{{l}_{2}},SO_{3}^{2-}\]does not
  done clear
  D)
   both form precipitate with \[BaC{{l}_{2}},SO_{4}^{2-}\]dissolves in \[HCl\] but \[SO_{3}^{2-}\]does not
  done clear
  View Answer play_arrow

• question_answer101) Metal ion responsible for the Minimata  disease is
  A)
  \[C{{o}^{2+}}\]
  done clear
  B)
   \[H{{g}^{2+}}\]
  done clear
  C)
   \[C{{u}^{2+}}\]
  done clear
  D)
   \[Z{{n}^{2+}}\]
  done clear
  View Answer play_arrow

• question_answer102) The reagent with which the following reaction is best accomplished is
  A)
  \[{{H}_{3}}P{{O}_{2}}\]          
  done clear
  B)
   \[{{H}_{3}}P{{O}_{3}}\]
  done clear
  C)
  \[{{H}_{3}}P{{O}_{4}}\]          
  done clear
  D)
   \[NaHS{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer103) In DNA, the consecutive deoxynucleotides are connected \[\upsilon ia\]
  A)
   phosphodiester linkage
  done clear
  B)
   phosphomonoester linkage
  done clear
  C)
   phosphotriester linkage
  done clear
  D)
   amide linkage
  done clear
  View Answer play_arrow

• question_answer104) The reaction of aniline with chloroform under alkaline conditions leads to the formation of
  A)
   phenylcyanide
  done clear
  B)
   phenylisonitrile
  done clear
  C)
   phenylcyanate
  done clear
  D)
   phenylisocyanate
  done clear
  View Answer play_arrow

• question_answer105) The   two   half-cell   reactions   of   an electrochemical cell is given as \[A{{g}^{+}}+{{e}^{-}}\xrightarrow{{}}Ag;\]  \[E_{A{{g}^{+}}/Ag}^{o}=-0.3995\,V\] \[F{{e}^{2+}}\xrightarrow{{}}F{{e}^{3+}}+{{e}^{-}};E_{F{{e}^{3+}}/F{{e}^{2+}}}^{o}=-0.7120\,V\] The value of cell EMF will be
  A)
  \[-\,0.3125\,\text{V}\]         
  done clear
  B)
   \[0.3125\,\text{V}\]
  done clear
  C)
  \[1.114\,\text{V}\]          
  done clear
  D)
  \[-\,1.114\text{V}\]
  done clear
  View Answer play_arrow

• question_answer106) The compressibility factor (Z) of one mole of a van der Waals gas of negligible a value is
  A)
   1
  done clear
  B)
   \[\frac{bp}{RT}\]
  done clear
  C)
   \[1+\frac{bp}{RT}\]
  done clear
  D)
   \[1-\frac{bp}{RT}\]
  done clear
  View Answer play_arrow

• question_answer107) When phenol is treated with \[{{D}_{2}}S{{O}_{4}}/{{D}_{2}}O.\]some of the hydrogens get exchanged. The final product in this exchange reaction is
  A)
   
  done clear
  B)
   
  done clear
  C)
   
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer108) The most likely protonation site in the following molecule is
  A)
   \[C-1\]
  done clear
  B)
   \[C-2\]
  done clear
  C)
  \[C-3\]
  done clear
  D)
   \[C-4\]
  done clear
  View Answer play_arrow

• question_answer109) The order of decreasing ease of abstraction of hydrogen atoms in the following molecule
  A)
   \[{{H}_{a}}>{{H}_{b}}>{{H}_{c}}\]
  done clear
  B)
   \[{{H}_{a}}>{{H}_{c}}>{{H}_{b}}\]
  done clear
  C)
   \[{{H}_{b}}>{{H}_{a}}>{{H}_{c}}\]
  done clear
  D)
   \[{{H}_{c}}>{{H}_{b}}>{{H}_{a}}\]
  done clear
  View Answer play_arrow

• question_answer110) At \[25{{\,}^{o}}C,\] the molar conductance of 0.007 M hydrofluoric acid is 150 mho \[\text{c}{{\text{m}}^{\text{2}}}\,\text{mo}{{\text{l}}^{-1}}\]and its \[A_{m}^{o}=500\,\,\text{mho}\,\text{c}{{\text{m}}^{2}}\text{mo}{{\text{l}}^{-1}}.\]The value of the dissociation constant of the acid at the given concentration at \[25{{\,}^{o}}C\]is
  A)
   \[7\times {{10}^{-4}}M\]
  done clear
  B)
   \[7\times {{10}^{-5}}M\]
  done clear
  C)
   \[9\times {{10}^{-3}}M\]
  done clear
  D)
   \[9\times {{10}^{-4}}M\]
  done clear
  View Answer play_arrow

• question_answer111) To observe an elevation of boiling point of \[0.05{{\,}^{o}}C,\] the amount of a solute (mol. wt. = 100) to be added to 100 g of water \[({{K}_{b}}=0.5)\] is
  A)
   2 g    
  done clear
  B)
   0.5 g   
  done clear
  C)
   1 g     
  done clear
  D)
   0.75 g
  done clear
  View Answer play_arrow

• question_answer112) The volume of ethyl alcohol (density 1.15 g/cc) that has to be added to prepare 100 cc of 0.5 M ethyl alcohol solution in water is
  A)
   1.15 cc
  done clear
  B)
   2 cc    
  done clear
  C)
   2.15 cc
  done clear
  D)
   2.30 cc
  done clear
  View Answer play_arrow

• question_answer113) The bond angle in\[\text{N}{{\text{H}}_{3}}({{107.2}^{o}}).\]is smaller than \[\text{N}{{\text{H}}_{3}}({{107.2}^{o}}).\]This is because of
  A)
   large size of F compared to H
  done clear
  B)
   large size of N compared to F
  done clear
  C)
   opposite polarity of N in the two molecules
  done clear
  D)
   small size of H compared to N
  done clear
  View Answer play_arrow

• question_answer114) A piece of wood from an archaeological sample has 5.0 counts \[{{\min }^{-1}}\]per gram of \[C-14,\]while a fresh sample of wood has a count of \[15.0\,{{\min }^{-1}}{{g}^{-1}}.\] If half-life of C-14 is 5770 yr, the age of the archaeological sample is
  A)
   8,500 yr           
  done clear
  B)
   9,200 yr
  done clear
  C)
   10,000 yr         
  done clear
  D)
   11. 000 yr
  done clear
  View Answer play_arrow

• question_answer115) The structure of \[\text{Xe}{{\text{F}}_{\text{6}}}\]is experimentally determined to be distorted octahedron. Its structure according to VSEPR theory is
  A)
   octahedron
  done clear
  B)
   trigonal bipyramid
  done clear
  C)
   pentagonal bipyramid
  done clear
  D)
   tetragonal bipyramid
  done clear
  View Answer play_arrow

• question_answer116) Two gases X (molecular weight\[{{M}_{X}}\]) and Y (molecular weight\[{{M}_{Y}}:{{M}_{Y}}:{{M}_{X}}\]) are at the same temperature T in two different containers. Their root mean square velocities are \[{{C}_{X}}\]and \[{{C}_{Y}}\]respectively. If the average kinetic energies per molecule of two gases X and \[Y\] are \[{{E}_{X}}\]and \[{{E}_{Y}}\]respectively then which of the following relation(s) is(are) true?
  A)
   \[{{E}_{X}}>{{E}_{Y}}\]
  done clear
  B)
   \[{{C}_{X}}>{{C}_{Y}}\]
  done clear
  C)
   \[{{E}_{X}}={{E}_{Y}}=(3/2)RT\]
  done clear
  D)
   \[{{E}_{X}}={{E}_{Y}}=(3/2){{k}_{B}}T\]
  done clear
  View Answer play_arrow

• question_answer117) For a spontaneous process, the correct statement(s) is (are)
  A)
   \[{{(\Delta {{G}_{system}})}_{T,p}}>0\]
  done clear
  B)
   \[(\Delta {{S}_{system}})+(\Delta {{S}_{surroundings}})>0\]
  done clear
  C)
   \[{{(\Delta {{G}_{system}})}_{T,p}}<0\]
  done clear
  D)
   \[{{(\Delta {{U}_{system}})}_{T,V}}>0\]
  done clear
  View Answer play_arrow

• question_answer118) The formal potential of \[F{{e}^{3+}}/F{{e}^{2+}}\]in a sulphuric acid and phosphoric acid mixture \[({{E}^{o}}=+\,0.61\text{V})\,\] is much lower than the standard potential \[({{E}^{o}}=+0.77\,V).\] This is due to
  A)
   formation of the species \[{{[FeHP{{O}_{4}}]}^{+}}\]
  done clear
  B)
   lowering of potential upon complexation
  done clear
  C)
   formation of the species \[{{[FeS{{O}_{4}}]}^{+}}\]
  done clear
  D)
   high acidity of the medium
  done clear
  View Answer play_arrow

• question_answer119) Cupric compounds are more stable their cuprous counterparts in solid state. This is because
  A)
  The endothermic character of the 2nd IP c not so high
  done clear
  B)
   size of \[C{{u}^{2+}}\]is less than \[C{{u}^{+}}\]
  done clear
  C)
  \[C{{u}^{2+}}\] has stabler electronic configuration as compared to \[C{{u}^{+}}\]
  done clear
  D)
   the lattice energy released for cupric compounds  is much higher than \[C{{u}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer120) Among the following statements about the molecules X and Y, the one(s) which correct is (are)
  A)
  X and Y are diastereomers
  done clear
  B)
  X and Y are enantiomers
  done clear
  C)
  X and Y are both aldohexoses
  done clear
  D)
  X is a D-sugar and Y is an L-sugar
  done clear
  View Answer play_arrow

• question_answer121) One molecule of triglyceride is produced using
  A)
   one fatty acid and one glycerol
  done clear
  B)
   one fatty acid and three glycerols
  done clear
  C)
   three fatty acids and three glycerois
  done clear
  D)
   three fatty acids and one glycerol
  done clear
  View Answer play_arrow

• question_answer122) Glutenin is an important protein in
  A)
   potato
  done clear
  B)
   wheat
  done clear
  C)
   soyabean
  done clear
  D)
   spinach
  done clear
  View Answer play_arrow

• question_answer123) Which one of the following is enriched with a non-reducing sugar?
  A)
   Grapes
  done clear
  B)
   Germinating barley grains
  done clear
  C)
   Table sugar
  done clear
  D)
   Mothers milk
  done clear
  View Answer play_arrow

• question_answer124) Select the correct statement related to mitosis.
  A)
   Amount of DNA in the parent cell is first halved and then distributed into two daughter cells
  done clear
  B)
   Amount of DNA in the parent cell is first doubled and then distributed into two daughter cells
  done clear
  C)
   Amount of DNA in the parent cell is first  halved and then distributed into four daughter cells
  done clear
  D)
   Amount of DNA in the parent cell is first doubled and then distributed into four daughter cells
  done clear
  View Answer play_arrow

• question_answer125) The frequency of crossing-over occurring between two genes located on the same chromosome depends on
  A)
   length of the chromosome
  done clear
  B)
   position of the centromere
  done clear
  C)
   activities of two genes
  done clear
  D)
   distance between two genes
  done clear
  View Answer play_arrow

• question_answer126) Chlorophyll molecules are located in the
  A)
   thylakoid membrane
  done clear
  B)
   thylakoid lumen
  done clear
  C)
   stroma
  done clear
  D)
   inner chloroplast membrane
  done clear
  View Answer play_arrow

• question_answer127) The primary cell wall is mainly made up of
  A)
   lignin               
  done clear
  B)
   pectin
  done clear
  C)
   cellulose            
  done clear
  D)
   protein
  done clear
  View Answer play_arrow

• question_answer128) Which of the following statements is wrong for sucrose?
  A)
   It is a disaccharide
  done clear
  B)
   It is a non-reducing sugar
  done clear
  C)
   It accumulates in the cytoplasm
  done clear
  D)
   It is comprised of maltose and fructose
  done clear
  View Answer play_arrow

• question_answer129) Which of the following is always absent in prokaryotic cells?
  A)
   Ribosome        
  done clear
  B)
   Mitochondria
  done clear
  C)
   DNA             
  done clear
  D)
   Cell wall
  done clear
  View Answer play_arrow

• question_answer130) Which of the following tissues provide maximum mechanical support to plant organs?
  A)
   Sclerenchyma    
  done clear
  B)
   Collenchyma
  done clear
  C)
   Parenchyma      
  done clear
  D)
   Aerenchyma
  done clear
  View Answer play_arrow

• question_answer131) The Respiratory Quotient (RQ) of glucose is
  A)
   0.5                
  done clear
  B)
   0.7
  done clear
  C)
  1.0                
  done clear
  D)
   1.5
  done clear
  View Answer play_arrow

• question_answer132) Cross-pollination through insect agent is called
  A)
   anthropophily      
  done clear
  B)
   malacophily
  done clear
  C)
   entemophily       
  done clear
  D)
   ornithophily
  done clear
  View Answer play_arrow

• question_answer133) Cleistogamous flowers are
  A)
   bisexual flowers which remain opened
  done clear
  B)
   bisexual flowers which remain closed
  done clear
  C)
   open female flower
  done clear
  D)
   open mate flower
  done clear
  View Answer play_arrow

• question_answer134) Which one of the following is a growth regulator produced by plants?
  A)
   Naphthalene acetic acid
  done clear
  B)
   Zeatin
  done clear
  C)
   2,4-dichlorophenoxy acetic acid
  done clear
  D)
   Benzyl aminopurine
  done clear
  View Answer play_arrow

• question_answer135) In apple, the edible portion is
  A)
   mesocarp        
  done clear
  B)
   epicarp
  done clear
  C)
   endocarp         
  done clear
  D)
   thalamus
  done clear
  View Answer play_arrow

• question_answer136) Anish is having colour blindness and married to Sheela, who is not colourblind. What is the chance that their son will have the disease?
  A)
   100%
  done clear
  B)
   50%
  done clear
  C)
   25%           
  done clear
  D)
   0%
  done clear
  View Answer play_arrow

• question_answer137) Insect pest resistant Bt cotton plant was developed using
  A)
   somaclonal variation
  done clear
  B)
   micropropagation
  done clear
  C)
   somatic hybridisation
  done clear
  D)
   Transgenic technology
  done clear
  View Answer play_arrow

• question_answer138) In which one of the following, expenditure of energy is required?
  A)
   Osmosis
  done clear
  B)
   Diffusion
  done clear
  C)
   Active transport
  done clear
  D)
   Passive transport
  done clear
  View Answer play_arrow

• question_answer139) Emasculation ensures cross-pollination in
  A)
   staminate flower   
  done clear
  B)
   bisexual flower
  done clear
  C)
   neuter flower       
  done clear
  D)
   pistillate flower
  done clear
  View Answer play_arrow

• question_answer140) The protein component of a holoenzyme is known as
  A)
   coenzyme        
  done clear
  B)
   cofactor
  done clear
  C)
   prosthetic group 
  done clear
  D)
   apoenzyme
  done clear
  View Answer play_arrow

• question_answer141) Pseudopodia are produced by
  A)
   plasma cell        
  done clear
  B)
   mast cell
  done clear
  C)
   adipose cell       
  done clear
  D)
   fibroblast cell
  done clear
  View Answer play_arrow

• question_answer142) Formation ofpolysome does not require
  A)
   rRNA            
  done clear
  B)
   mRNA
  done clear
  C)
   tRNA            
  done clear
  D)
   snRNA
  done clear
  View Answer play_arrow

• question_answer143) \[{{K}_{m}}\]is
  A)
   product           
  done clear
  B)
   enzyme
  done clear
  C)
   constant          
  done clear
  D)
   unit
  done clear
  View Answer play_arrow

• question_answer144) Proteins helping in kinetocore formation of yeast are
  A)
   \[CBF2\]and\[Ka{{r}^{3}}\text{ }P\]  
  done clear
  B)
   \[CBF2\]and \[CBF3\]
  done clear
  C)
   \[CBF3\]and \[Ka{{r}^{3}}\text{ }P\]  
  done clear
  D)
   \[CBF2,\text{ }CBF3\]and \[Ka{{r}^{3}}\text{ }P\]
  done clear
  View Answer play_arrow

• question_answer145) Juvenile hormone in insect is released from
  A)
   protocerebrum     
  done clear
  B)
   corpora cardiaca
  done clear
  C)
   corpora allata      
  done clear
  D)
   thoracic gland
  done clear
  View Answer play_arrow

• question_answer146) Genes which are located only in th X-chromosome are known as
  A)
   epistasis genes
  done clear
  B)
   holandric genes
  done clear
  C)
   operator genes
  done clear
  D)
   antiepistasis genes
  done clear
  View Answer play_arrow

• question_answer147) Industrial melanism is an
  A)
   effect of industrial pollution
  done clear
  B)
   effect of mutation
  done clear
  C)
   evidence of survival of fittest
  done clear
  D)
   evidence of favour of natural selection
  done clear
  View Answer play_arrow

• question_answer148) The concept of hot-spot was first introduced by
  A)
   Mayer            
  done clear
  B)
   Simpson
  done clear
  C)
   Myers            
  done clear
  D)
   David
  done clear
  View Answer play_arrow

• question_answer149) With the rise of water temperature, dissolvec oxygen
  A)
   remains unchanged
  done clear
  B)
   increases in amount
  done clear
  C)
   decreases in amount
  done clear
  D)
   is more available to the aquatic organisms
  done clear
  View Answer play_arrow

• question_answer150) Intermediate host of malarial parasite is
  A)
   pig               
  done clear
  B)
   man
  done clear
  C)
   mosquito          
  done clear
  D)
   larva of mosquito
  done clear
  View Answer play_arrow

• question_answer151) Which codon is not an indicator of completion of protein synthesis?
  A)
   UAG          
  done clear
  B)
   AUG
  done clear
  C)
   UAA          
  done clear
  D)
   UGA
  done clear
  View Answer play_arrow

• question_answer152) Kyoto Protocol is a multination international treaty for
  A)
   phasing out green house gases
  done clear
  B)
   controlling ozone destroying substances
  done clear
  C)
   management of hazardous wastes
  done clear
  D)
   conservation of biodiversity
  done clear
  View Answer play_arrow

• question_answer153) The objective ofRamsar Convention was
  A)
   forest conservation
  done clear
  B)
   wildlife conservation
  done clear
  C)
   wetland conservation
  done clear
  D)
   biodiversity conservation
  done clear
  View Answer play_arrow

• question_answer154) Which of the following human parasites require mosquito to complete their life-cycle?
  A)
   Ascaris lumbricoides and Wucherena bancrofti
  done clear
  B)
   Leishmania donovani and Plasmodium ovale
  done clear
  C)
   Ascaris lumbricoides and Leishmania donovani
  done clear
  D)
   Wuchereria bancrofti and Plasmodium ovale
  done clear
  View Answer play_arrow

• question_answer155) In which diagnostic system, piezoelectric effect and reverse piezoelectric effect are involved?
  A)
   EEG             
  done clear
  B)
   CAT
  done clear
  C)
   USG            
  done clear
  D)
   MRI
  done clear
  View Answer play_arrow

• question_answer156) Main cause of eutrophication is
  A)
   fluctuation of temperature
  done clear
  B)
   unusual growth of aquatic vegetations
  done clear
  C)
   enrichment of nutrients
  done clear
  D)
   abundance of microorganisms
  done clear
  View Answer play_arrow

• question_answer157) The body ofRohu fish is covered by
  A)
   cycloid scale, but the tail of homocercal
  done clear
  B)
   placoid scale, but the tail of heterocercal
  done clear
  C)
   cycloid scale, but the tail of heterocercal
  done clear
  D)
   ptecoid scale, but the tail is homocercal
  done clear
  View Answer play_arrow

• question_answer158) Management of National Park is controlled by
  A)
   State Government
  done clear
  B)
   Central Government
  done clear
  C)
   United Nations
  done clear
  D)
   Non-Government Organisations
  done clear
  View Answer play_arrow

• question_answer159) Which one is an example of living fossil?
  A)
   Coral              
  done clear
  B)
   Ascidia
  done clear
  C)
   Octopus           
  done clear
  D)
   King crab
  done clear
  View Answer play_arrow

• question_answer160) The removal of Keystone species will affect the
  A)
   producers
  done clear
  B)
   consumers
  done clear
  C)
   ecosystem
  done clear
  D)
   decomposers
  done clear
  View Answer play_arrow

• question_answer161) Objects less than \[0.2\,\mu m\]in size cannot be seen under light microscope because
  A)
   the wave length of visible light is \[3900-7800\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  B)
   only two types of lenses are used
  done clear
  C)
   maximum magnifying power of ocular lens is 20 X
  done clear
  D)
   maximum magnifying power of objective lens is 100 X
  done clear
  View Answer play_arrow

• question_answer162) If the sequence of bases in the coding strand  of a double-stranded DNA is 5-GTTCGAGTC-3, the sequence of bases in its transcript will be
  A)
   5-GACUCGAAC-3
  done clear
  B)
   S-CAAGCUCAG-S
  done clear
  C)
   5-GUUCGAGUC-3
  done clear
  D)
   S-CUGAGCUUG-S
  done clear
  View Answer play_arrow

• question_answer163) Immunity that develops in the foetus after receiving antibodies from mothers blood through placenta is
  A)
   naturally acquired active immunity
  done clear
  B)
   artificially acquired active immunity
  done clear
  C)
   naidrally acquired passive immunity
  done clear
  D)
   artificially acquired passive immunity
  done clear
  View Answer play_arrow

• question_answer164) The serous membrane which covers the lungs is called
  A)
   pericardium       
  done clear
  B)
   peritoneum
  done clear
  C)
   perichondrium   
  done clear
  D)
   pleura
  done clear
  View Answer play_arrow

• question_answer165) The volume of air that can be breathed in by maximum forced inspiration over and above the normal inspiration is called
  A)
   expiratory reserved volume
  done clear
  B)
   inspiratory reserved volume
  done clear
  C)
   vital capacity
  done clear
  D)
   inspiratory capacity
  done clear
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• question_answer166) How many ATP are produced when one molecule of \[\text{FAD}{{\text{H}}_{\text{2}}}\]is oxidised to FAD through electron transport system?
  A)
   2     
  done clear
  B)
   3     
  done clear
  C)
   1     
  done clear
  D)
   4
  done clear
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• question_answer167) Which valve is present at the opening of coronary sinus?
  A)
   Mitral valve        
  done clear
  B)
   Eustachian valve
  done clear
  C)
   Thebesian valve    
  done clear
  D)
   Tricaspid valve
  done clear
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• question_answer168) Which of the following organs does not  produce any digestive enzymes?
  A)
   Salivary gland     
  done clear
  B)
   Pancreas
  done clear
  C)
   Liver              
  done clear
  D)
   Stomach
  done clear
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• question_answer169) The disease that occurs in mature adult human being due to deficiency of calciferol is
  A)
   keratomalacia     
  done clear
  B)
   osteomalacia
  done clear
  C)
   glossitis           
  done clear
  D)
   pernicious anaemia
  done clear
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• question_answer170) Which blood cells can engulf bacteria b; phagocytosis?
  A)
   Eosinophil and basophil
  done clear
  B)
   Basophil and lymphocyte
  done clear
  C)
   Neutrophil and monocyte
  done clear
  D)
   Neutrophil and lymphocyte
  done clear
  View Answer play_arrow

• question_answer171) Which excitatory neurotransmitter is involved in the transmission of impulse at th neuromuscular junction?
  A)
   Epinephrine        
  done clear
  B)
   Serotonin
  done clear
  C)
   Acetylcholine       
  done clear
  D)
   Glycine
  done clear
  View Answer play_arrow

• question_answer172) Which area of cerebral cortex is responsible for the interpretation of speech?
  A)
   Brocas area
  done clear
  B)
   Wernickes area
  done clear
  C)
   Premotor area
  done clear
  D)
   Association area of sensory cortex
  done clear
  View Answer play_arrow

• question_answer173) Which of the following pituitary hormones is  secreted without the involvement of a Releasing Hormone (RH)?
  A)
   Thyroid Stimulating Hormone (TSH)
  done clear
  B)
   Follicle Stimulating Hormone (FSH)
  done clear
  C)
   Oxytocin
  done clear
  D)
   Prolactin
  done clear
  View Answer play_arrow

• question_answer174) Which of the following hormones is a derivative of fatty acid?
  A)
   Gastrin            
  done clear
  B)
   Thyroxin
  done clear
  C)
   Estrogen          
  done clear
  D)
   Prostaglandins
  done clear
  View Answer play_arrow

• question_answer175) Which of the following is not involved in muscular contraction?
  A)
   Calcium ion       
  done clear
  B)
   Troponin
  done clear
  C)
   Actin             
  done clear
  D)
   Magnesium ion
  done clear
  View Answer play_arrow

• question_answer176) Proximal convoluted tubule of nephron is responsible for
  A)
   filtration of blood
  done clear
  B)
   maintenance of glomerular filtration rate
  done clear
  C)
   selective reabsorption of glucose, amino acid NaCI and water
  done clear
  D)
   reabsorption of salts only
  done clear
  View Answer play_arrow

• question_answer177) Which of the following processes was discovered by Lederberg and Tatum (1946)?
  A)
   Transduction
  done clear
  B)
   Transformation
  done clear
  C)
   Asexual reproduction
  done clear
  D)
   Conjugation
  done clear
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• question_answer178) The component of bacteria that retains the crystal violet stain during Gram staining is
  A)
   O-antigen
  done clear
  B)
   Hpopolysaccharide
  done clear
  C)
   peptidoglycan
  done clear
  D)
   cytoplasmic membrane
  done clear
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• question_answer179) Which of the following bacteria is observed as chain-like formation?
  A)
   Escherichia coli
  done clear
  B)
   Bacillus subtilis
  done clear
  C)
   Streptococcus pyogenes
  done clear
  D)
   Micrococcus ffavus
  done clear
  View Answer play_arrow

• question_answer180) During gene cloning, the enzyme used to join the insert DNA with the plasmid vector is
  A)
   DNA ligase
  done clear
  B)
   restriction endonuclease
  done clear
  C)
   alkaline phosphatase
  done clear
  D)
   exonuclease
  done clear
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• question_answer181) The partial floral formula of a flower is \[{{\text{K}}_{(5)}}{{C}_{5}}{{A}_{(\infty )}}{{\underline{G}}_{(5)}}.\] Which of the following set of information is conveyed here?
  A)
   Gamosepalous, polypetalous, syncarpous and superior ovary
  done clear
  B)
   Polysepalous, polypetalous, syncarpous  and inferior ovary
  done clear
  C)
   Gamosepalous, gamopetalous, polycarpous and superior ovary
  done clear
  D)
   Gamosepalous, polypetalous, syncarpous and inferior ovary
  done clear
  View Answer play_arrow

• question_answer182) In a plant species, flower colour yellow is dominant oyer white and fruit shape round is dominant over elongated.  Crossing was performed between two pure lines-one  having yellow-flower and round-fruit and another with white-flower and elongated-fruit. About 20 plants survived in \[{{F}_{1}}\]progeny. Plants of Fi were allowed to self-fertilise and about 960 plants survived in \[{{F}_{2}}.\]If the traits follow Mendelian inheritance, the number of plants would have yellow-flower and round-fruit in \[{{F}_{1}}\]and \[{{F}_{2}}\]are respectively
  A)
   20, 960
  done clear
  B)
   20. 540
  done clear
  C)
   10, 180
  done clear
  D)
   10. 60
  done clear
  View Answer play_arrow

• question_answer183) Match the items in column I with those in column II and choose the correct answer.

  Column I	Column II
  A. Control of weeds	1. Gibberellin.
  B. Induction of germination	2. Cytokines
  C. Ripening of fruit	3. 2,4-D
  D. Delaying of senescence	4. Ethylene

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

• question_answer184) Out of 38 molecules of ATP produced upon aerobic respiration of glucose, the break up if ATP production in glycolysis (P), pyruvate to acetyl Co-A formation (Q) and Krebs cycle (R) is as follows
  A)
   \[P=2,Q=6,R=30\]
  done clear
  B)
   \[P=8,Q=6,R=24\]
  done clear
  C)
   \[P=8,Q=10,\text{ }R=20\]
  done clear
  D)
   \[P=2,Q=12,\text{ }R=24\]
  done clear
  View Answer play_arrow

• question_answer185) The correct sequence of organelles in which glycolate and glyoxylate  are produced sequentially in photorespiration, is
  A)
   chloroplast and mitochondria
  done clear
  B)
   chloroplast and peroxisome
  done clear
  C)
   peroxisome and mitochondria
  done clear
  D)
   peroxisome and chioroplast
  done clear
  View Answer play_arrow

• question_answer186) Cells die at the time of release of secretory meterials in
  A)
   holocrine gland    
  done clear
  B)
   apocrine gland
  done clear
  C)
   merocrine gland   
  done clear
  D)
   mixed or apocrine gland
  done clear
  View Answer play_arrow

• question_answer187) X-ray is needed for
  A)
   Ultrasonography  
  done clear
  B)
   CT scanning
  done clear
  C)
   MRI             
  done clear
  D)
  NMR
  done clear
  View Answer play_arrow

• question_answer188) Which of the following statements is wrong?
  A)
   Test tube baby grows inside test tube.
  done clear
  B)
   Test tube baby grows within mothers womb
  done clear
  C)
   Test tube baby grows within surrogate mothers womb
  done clear
  D)
   Test tube baby grows following uterine fertilisation
  done clear
  View Answer play_arrow

• question_answer189) The correct sequence of embryonic development is
  A)
   Blastula-Morula-Zygote-Gastrula- Embryo
  done clear
  B)
   Zygote-Blastula-Morula-Gastrula-Embryo
  done clear
  C)
   Zygote-Morula-Blastula-Gastrula- Embryo
  done clear
  D)
   Gastrula-Morula-Zygote-Blastula- Embryo
  done clear
  View Answer play_arrow

• question_answer190) The time interval of appearance of fever in the malarial patients depends on the types of malaria. The research evidences suggest that such time intervals are-(1) 36-48 hours, (2) 48 hours and (3) 72 hours. If any such patient experiences fever at an interval of 48 hours, then the said patient suffers from
  A)
   only benign tertian malaria
  done clear
  B)
   quarantan malaria or mild tertian malaria
  done clear
  C)
   malignant tertian malaria or benign tertian malaria
  done clear
  D)
   mild tertian malaria or benign tertian malaria
  done clear
  View Answer play_arrow

• question_answer191) The structure of E. coli chromosomal DNA is
  A)
   double-stranded, right handed and circular
  done clear
  B)
   single-stranded, right handed and circular
  done clear
  C)
   double-stranded, left handed and linear
  done clear
  D)
   double-stranded, left handed and circular
  done clear
  View Answer play_arrow

• question_answer192) Absorption of vitamin\[-{{B}_{12}}\] in human requires T  glycoprotein secreted from Q. The correct choices of P and Q are
  A)
   P - Extrinsic factor and      Q - Stomach
  done clear
  B)
   P - Intrinsic factor and       Q - Stomach
  done clear
  C)
   P - Intrinsic factor and        Q - Small intes
  done clear
  D)
   P- Exopolysaccharide and  Q-Smail intestin
  done clear
  View Answer play_arrow

• question_answer193) What type of cartilaginous tissue is foul the inter-vertebral discs?
  A)
   Costal cartilage
  done clear
  B)
   Hyaline cartilage
  done clear
  C)
   White fibrous cartilage
  done clear
  D)
   Yellow elastic cartilage
  done clear
  View Answer play_arrow

• question_answer194) If spermatogenesis proceeds too rap inhibin is released. Inhibin reduces the sec setion of
  A)
   Luteinising Hormone (LH)
  done clear
  B)
   Follicle Stimulating Hormone (FSH)
  done clear
  C)
   Testosterone
  done clear
  D)
   Interstitial Cell Stimulating Hormone (ICSH)
  done clear
  View Answer play_arrow

• question_answer195) Which of the following statements are tru Motor cortex?

  I. It is located in the frontal lobe of cerebral cortex.

  II. It contains pyramidal cells.

  III. It is responsible for all visual function.

  IV. It is essential for our thought process.

  V. It stimulates wakefulness.

  VI. It regulates voluntary muscular movements.

  A)
   I, II, III and V        
  done clear
  B)
   II, III. IV and V
  done clear
  C)
   II, IV, V and VI       
  done clear
  D)
   I, II, IV and VI
  done clear
  View Answer play_arrow

• question_answer196) Identify the correct statement(s) in relation to \[{{C}_{4}}\] photosynthesis
  A)
   Kranz anatomy is an essential feature for \[{{C}_{4}}\]plants
  done clear
  B)
   \[{{C}_{4}}\]plants have higher water use efficiency   than  plants
  done clear
  C)
   Photorespiration can be minimised when \[{{C}_{4}}\] pathway is in operation
  done clear
  D)
   Conversion of oxaloacetate to malate occurs in the bundle sheath cells
  done clear
  View Answer play_arrow

• question_answer197) Genetically improved crop varieties can be developed in laboratory by
  A)
   somatic hybridisation
  done clear
  B)
   transgenic technology
  done clear
  C)
   cell suspension culture
  done clear
  D)
   somaclonal variation
  done clear
  View Answer play_arrow

• question_answer198) Sand flies play significant role in spreading kala-azar because they
  A)
   suck blood only from the patients suffering from kala-azar
  done clear
  B)
   convert amastigote into promastigote
  done clear
  C)
  . engulf amastigote at the time of blood sucking from the infected persons
  done clear
  D)
   inject promastigote into the body of non-infected persons at the time of blood sucking
  done clear
  View Answer play_arrow

• question_answer199) Which of the following factor(s) increase blood pressure?
  A)
   Increase of cardiac output
  done clear
  B)
   Constriction of blood vessel
  done clear
  C)
   Activation of parasympathetic nerve
  done clear
  D)
   Increase of blood volume
  done clear
  View Answer play_arrow

• question_answer200) Which of the following statement(s) are true?
  A)
   Antibiotics can kill bacteria, but disinfectants do not
  done clear
  B)
   Disinfectants have better bactericidal efficiency than antibiotics
  done clear
  C)
   Antibiotics  are  of  microbial  origin,   but disinfectants are chemical compounds
  done clear
  D)
   Antibiotics can be injected into the patients, whereas disinfectants are not
  done clear
  View Answer play_arrow