Solved papers for BHU PMT BHU PMT (Mains) Solved Paper-2007

done BHU PMT (Mains) Solved Paper-2007 Total Questions - 200

• question_answer1) Two organ pipes both closed at one end, have lengths\[l\]and\[l+\Delta l\]. If the velocity of sound in air is v, then the number of beats per second is
  A)
   \[\frac{v}{4l}\]                                 
  done clear
  B)
   \[\frac{v}{2l}\]
  done clear
  C)
    \[\frac{v}{4{{l}^{2}}}\Delta l\]                  
  done clear
  D)
   \[\frac{v}{2{{l}^{2}}}\Delta l\]
  done clear
  View Answer play_arrow

• question_answer2) If the amount of heat energy received per unit area from sun is measured on earth, mars and jupiter, it will be
  A)
   same for all
  done clear
  B)
   in decreasing order jupiter, mars and earth
  done clear
  C)
   in increasing order jupiter, mars and earth
  done clear
  D)
   in decreasing order mars, earth and Jupiter
  done clear
  View Answer play_arrow

• question_answer3) Four optical media have indices of refraction of 1.40, 1.50, 1.60 and 1.70 respectively. The medium that has the largest critical angle is the one whose index of refraction is
  A)
   1.40                                      
  done clear
  B)
   1.50
  done clear
  C)
   1.60                                      
  done clear
  D)
   1.70
  done clear
  View Answer play_arrow

• question_answer4) Which of the following has greatest packing fraction?
  A)
   Simple cubic
  done clear
  B)
   Body centered cubic
  done clear
  C)
   Face centered cubic
  done clear
  D)
   All have the same packing fraction
  done clear
  View Answer play_arrow

• question_answer5) An ideal gas has molar specific heat 5R/2 at constant pressure. If 300 J of heat is given to two moles of gas at constant pressure, the change in temperature is
  A)
   \[7.22{}^\circ C\]            
  done clear
  B)
  \[8.94{}^\circ C\]
  done clear
  C)
    zero                                    
  done clear
  D)
  \[5{}^\circ C\]
  done clear
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• question_answer6) A body of mass m falls from a height h and collides with another body of same mass. After collision the two bodies combine and move through distance till they come to rest. Find the work done against the resistive force.
  A)
   \[\frac{1}{2}mg(h+2d)\]              
  done clear
  B)
   \[\frac{1}{2}mg(h+4d)\]
  done clear
  C)
   \[\frac{1}{2}mg(h-d)\]                 
  done clear
  D)
   \[\frac{1}{2}mg(h-2d)\]
  done clear
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• question_answer7) Light of wavelength \[\lambda =4000\overset{\text{o}}{\mathop{\text{A}}}\,\] and intensity \[100\text{ }W/{{m}^{2}}\]is incident on a plate of threshold frequency\[5.5\times {{10}^{14}}Hz\]. Find the number of photons incident per\[{{m}^{2}}\]per sec.
  A)
  \[{{10}^{21}}\]                                  
  done clear
  B)
   \[3.0\times {{10}^{19}}\]
  done clear
  C)
   \[2.02\times {{10}^{20}}\]          
  done clear
  D)
  \[2.02\times {{10}^{21}}\]
  done clear
  View Answer play_arrow

• question_answer8) When electron is accelerated between 500 keV, what is the percentage increase in mass?
  A)
   82.35%                                
  done clear
  B)
   97.85%
  done clear
  C)
   42.35%                                
  done clear
  D)
   59.45%
  done clear
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• question_answer9) Inductive resistance\[25\,\Omega \], and capacitive resistance\[75\,\Omega \]. are connected across 250 V mains in series. Find the rms potential difference across inductor and capacitor.
  A)
   125 V, 375 V      
  done clear
  B)
   375 V, 125 V
  done clear
  C)
   125 V, 125 V      
  done clear
  D)
   375 V, 375 V
  done clear
  View Answer play_arrow

• question_answer10) In the Boolean algebra\[\overline{A}.\overline{B}\]is same as
  A)
   \[\overline{A+B}\]                                        
  done clear
  B)
   \[A.B\]
  done clear
  C)
   \[\overline{A.B}\]                                          
  done clear
  D)
  \[A+B\]
  done clear
  View Answer play_arrow

• question_answer11) When a force\[{{F}_{1}}\]acts on a particle, frequency is 6 Hz and when a force\[{{F}_{2}}\]acts, frequency is 8 Hz. What is the frequency when both the forces act simultaneously in same direction?
  A)
   12 Hz                                   
  done clear
  B)
   25 Hz
  done clear
  C)
   10 Hz                                   
  done clear
  D)
   5 Hz
  done clear
  View Answer play_arrow

• question_answer12) A hypothetical experiment conducted to determine Young s formula\[Y=\frac{\cos \,\theta \,{{T}^{x}}.\tau }{{{l}^{3}}}\]. If Y = Young's  modulus, T = time  period, \[\tau =\]torque and\[l=\]length, then find the value of\[x\].
  A)
   zero                                     
  done clear
  B)
   1
  done clear
  C)
   2                                            
  done clear
  D)
   3
  done clear
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• question_answer13) A particle of mass m, strikes on ground with angle of incidence\[45{}^\circ \]. If coefficient of restitution\[e=1/\sqrt{2},\]the velocity of reflection is
  A)
   \[\frac{\sqrt{3}}{2}v\]                  
  done clear
  B)
   \[\sqrt{3}v\]
  done clear
  C)
    \[\frac{1}{2}v\]                              
  done clear
  D)
  \[\frac{v}{\sqrt{3}}\]
  done clear
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• question_answer14) Two blocks, one of mass A = 1 kg and another B = 2 kg are shown in figure. A force of 5 N is applied on A. Coefficient of friction between A and B is 0.2 and that between B and horizontal surface is zero. Find the time taken for the front face of A to coincide with that of B.
  A)
   \[2\sqrt{2}s\]                   
  done clear
  B)
   \[\sqrt{\frac{8}{3}}s\]
  done clear
  C)
   \[\sqrt{\frac{3}{8}}s\]                  
  done clear
  D)
   \[2s\]
  done clear
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• question_answer15) Separation between two parallel plates facing each other is 2 cm and surface area\[{{l}^{2}}=100\] \[c{{m}^{2}}\]. If\[{{10}^{6}}\]electrons of velocity\[10{{\,}^{8}}m/s\]projected into the gap between plates of potential difference 400 V, the deflection of an electron is
  A)
   17.6 mm                             
  done clear
  B)
   1.76 mm
  done clear
  C)
   0.176 mm          
  done clear
  D)
   zero
  done clear
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• question_answer16) If the radius of a coil is changing at the rate\[{{10}^{-2}}\] units in a normal magnetic field\[{{10}^{-3}}\] units, the induced emf is\[1\mu V\]. What is the final radius of the coil?
  A)
   1.6cm                                  
  done clear
  B)
   16cm
  done clear
  C)
   12cm                                   
  done clear
  D)
   1.2cm
  done clear
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• question_answer17) For a radioactive material half-life period is 600 s. If initially there are 600 number of molecules   find   the   time   taken   for disintegration of 450 molecules and the rate of disintegration.
  A)
   1200s, 0.173 disintegration /s
  done clear
  B)
   1000 s, 0.173 disintegration /s
  done clear
  C)
   1000 s, 1.173 disintegration/s
  done clear
  D)
   1200 s, 1.173 disintegration /s
  done clear
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• question_answer18) A body is dropped from height 8 m. After striking the surface it rises to 6 m, what is fractional loss in kinetic energy during impact? Assuming air resistance to be negligible.
  A)
   2/5                                       
  done clear
  B)
   ¼
  done clear
  C)
   3/4                                       
  done clear
  D)
   1/5
  done clear
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• question_answer19) Assuming Newton's law of cooling to be valid, the temperature of body changes from\[60{}^\circ C\] to\[40{}^\circ C\]in 7 min. Temperature of surrounding being\[10{}^\circ C\]. Find its temperature after next 7 min.
  A)
  \[24{}^\circ C\]   
  done clear
  B)
   \[20{}^\circ C\]
  done clear
  C)
   \[14{}^\circ C\]                                
  done clear
  D)
  \[28{}^\circ C\]
  done clear
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• question_answer20) A ring of mass 0.8 kg and radius 0.1 m makes \[\frac{5}{\pi }\]rotations per second about axis perpendicular to its plane through centre. Calculate angular momentum and kinetic energy of ring.
  A)
   \[0.08kg-{{m}^{2}}/s,0.2J\]
  done clear
  B)
   \[0.85kg-{{m}^{2}}/s,0.2J\]
  done clear
  C)
   \[0.85kg-{{m}^{2}}/s,0.4J\]
  done clear
  D)
   \[0.08kg-{{m}^{2}}/s,0.4J\]
  done clear
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• question_answer21) There is magnetic material of coercivity\[2\times {{10}^{3}}A/m\]. What current should flow through solenoid of length 15 cm having 150 turns 150 to demagnetize the substance completely?
  A)
   4 A                                        
  done clear
  B)
   2.5 A
  done clear
  C)
   2 A                                        
  done clear
  D)
   3.5 A
  done clear
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• question_answer22) Electric field at\[x=10\]cm is 100 V/m and at \[x=-10\]cm is\[-100\text{ }V/m\]. The magnitude of charge enclosed by the cube of side 20 m is
  A)
   \[8{{\varepsilon }_{0}}\]                             
  done clear
  B)
  \[2{{\varepsilon }_{0}}\]
  done clear
  C)
   \[3{{\varepsilon }_{0}}\]                             
  done clear
  D)
  \[5{{\varepsilon }_{0}}\]
  done clear
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• question_answer23) A particle is rotating with constant angular acceleration on a circular track. If its angular velocity changes from 20 k rad/s to 40 n rad/s in 10 s, what are the number of revolutions that the particle has completed during this time?
  A)
   100                                       
  done clear
  B)
   150
  done clear
  C)
   250                                       
  done clear
  D)
   1000
  done clear
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• question_answer24) Two tuning forks when sounded together give 8 beat/s. When A is sounded with air column of length 37.5 cm closed at one end resonance occurs in its fundamental mode. B gives resonance with air column of length 38.5 cm and closed at one end in its fundamental mode. The frequencies of tuning forks are
  A)
   300 Hz, 300 Hz  
  done clear
  B)
   300 Hz, 308 Hz
  done clear
  C)
   308 Hz, 308 Hz  
  done clear
  D)
   308 Hz, 300 Hz
  done clear
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• question_answer25) A boy is hanging from a horizontal branch of a tree. The tension in the arms will be maximum when the angle between the arms is
  A)
   \[0{}^\circ \]                                     
  done clear
  B)
   \[60{}^\circ \]
  done clear
  C)
    \[90{}^\circ \]                                 
  done clear
  D)
  \[120{}^\circ \]
  done clear
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• question_answer26) A book with many printing errors contains four different expressions for the displacement y of a particle executing simple harmonic motion which of the following options are correct? (1) \[Y=A\sin \left( \frac{2\pi t}{T} \right)\] (2) \[Y=A\sin vt\] (3) \[Y=\frac{A}{\sqrt{2}}(\sin \omega t+\cos \omega t)\] (4) \[Y=\frac{A}{T}\sin \left( \frac{t}{A} \right)\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer27) Which of the following are not correct about centre of mass? (1) It depends on frame of reference (2) Internal forces may affect the motion of centre of mass (3) Centre of mass and centre of gravity are synonymous (4) In centre of mass frame momentum of a system is always zero
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer28) If a particle travels a linear distance at speed\[{{v}_{1}}\]and comes back along the same track at speed\[{{v}_{2}}.\] (1) Its average speed is arithmetic mean\[({{v}_{1}}+{{v}_{2}})/2\] (2) Its average speed is harmonic mean\[2{{v}_{1}}{{v}_{2}}/({{v}_{1}}+{{v}_{2}})\] (3) Its average speed is geometric mean\[\sqrt{{{v}_{1}}{{v}_{2}}}\] (4) Its velocity is zero
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer29) Apparent weight of a body in an elevator is more than rest weight. If elevator is (1) going up and slowing down (2) going up and speeding up (3) going down and speeding up (4) going down and slowing down
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer30) Let V and E denote the gravitational potential and gravitational field at a point. It is possible to have (1)\[V=0\]and\[E=0\]     (2)\[V\ne 0\]and\[E=0\] (3)\[V\ne 0\]and\[E\ne 0\]         (4)\[V=0\]and\[E\ne 0\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer31) For an isolated system in the absence of any dissipative effect (1) KE is conserved (2) total energy is conserved (3) PE is conserved (4) mechanical energy is conserved
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer32) Which of the following statements are correct? (1) Young's modulus, bulk modulus and shear modulus have the units of pressure (2) Young's modulus describes the length elasticity of a material (3) The value of Young's modulus depends on the dimensions of the body (4) Modulus of elasticity is the smallest value of stress required to produce a permanent distortion in a body
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer33) A steel cube weighs 1 kg in air and 0.88 kg in water.  The density of the steel is\[7.71\times {{10}^{3}}\] \[kg/{{m}^{3}}\]and of water is\[{{10}^{3}}kg/{{m}^{3}}\]. The cube (1) must be solid (2) consists of impure steel (3) must be hollow (4) consists of pure steel
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer34) A cyclic process is completed by processes 1 and 2.\[\Delta Q\]and\[\Delta W\]represent heat supplied and the work done.\[\Delta {{U}_{1}}\]and\[\Delta {{U}_{2}}\]are changes in internal energies in the two processes respectively. Then (1) \[\Delta {{U}_{1}}=-\Delta {{U}_{2}}\]              (2)\[\Delta {{U}_{1}}=\Delta {{U}_{2}}\] (3) \[\Delta Q=\Delta W\]                            (4)\[\Delta Q=-\Delta W\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer35) A heated body emits radiation which has maximum intensity at frequency\[{{v}_{m}}\]. If the temperature of the body is doubled (1) the maximum intensity radiation will be at frequency\[2{{v}_{m}}\] (2) the maximum intensity radiation will be at frequency\[(1/2){{v}_{m}}\] (3) the total emitted energy will increase by a factor of 2 (4) the total emitted energy will increase by a factor of 16
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer36) Which one of the following represents a travelling wave? (1) \[y=A\sqrt{(x-vt)}\] (2) \[y=A\cos (ax+bt)\] (3) \[y=A\log (x-vt)\] (4) \[y=f({{x}^{2}}-v{{t}^{2}})\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer37) A particle is performing a linear simple harmonic motion. If the acceleration and the corresponding velocity of the particle are a and v respectively, which of the following graphs is/are correct? (1)    (2) (3)         (4)
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer38) In a Young's double-slit experiment, let A and B be the two slits. A thin film of thickness t and refractive index u is placed in front of A. Let\[\beta =\]fringe width. Then the central maximum will shift (1) towards A                     (2) towards B (3) by \[t(\mu -1)\frac{\beta }{\lambda }\]           (4) by \[\mu t\frac{\beta }{\lambda }\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer39) A charged particle moves with a speed v in a circular path of radius r around a long uniformly charged conductor. If the conductor has a charge per unit length\[\lambda ,\]the particle has mass m and charge q; then (1) \[v\propto \sqrt{q}\]                               (2) \[v\propto \sqrt{\lambda }\] (3) \[v\propto \sqrt{m}\]                             (4) \[v\propto \frac{1}{m}\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer40) A parallel plate capacitor is first connected to DC source. It is then disconnected and then immersed in a liquid dielectric. Then (1) the capacity increases (2) the liquid level between the plates increases (3) the potential on the plates will decrease (4) the liquid level will remain the same as that outside the plates
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer41) In the circuit shown below, the cell is ideal, with emf = 2V. The resistance of the coil of the galvanometer G is\[1\,\Omega \]. Then (1) 0.2 A current flows in G (2) potential difference across\[{{C}_{1}}\]is 1 V (3) potential difference across\[{{C}_{2}}\]is 1.2 V (4) no current flows in G
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer42) A uniform wire of resistance R is shaped into a regular n-side of a polygon (n is even). The equivalent resistance between any two comers can have (1) the maximum value\[(R/4)\] (2) the maximum value\[(R/n)\] (3) the minimum value\[R\left( \frac{n-1}{{{n}^{2}}} \right)\] (4) the minimum value\[(R/n)\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer43) Two identical charged particles enter a uniform magnetic field with same speed but at angles\[30{}^\circ \]and\[60{}^\circ \]with field. Let a, b and c be the ratio of their time periods, radii and pitches of the helical paths then (1) \[abc>1\]                                      (2) \[abc=1\] (3) \[abc<1\]                                      (4) \[a=bc\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer44) In pure rolling fraction of its total energy associated with rotation is\[\alpha \]for a ring and P for a solid sphere. Then (1) \[\alpha =1/2\]           (2) \[\beta =2/7\] (3) \[\beta =2/5\]            (4)\[\alpha =1/4\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer45) A curved road is banked for speed\[{{v}_{0}}\]. When a car moves along the road with a constant speed v, the force of friction between the road and the tyres is F. Which of the following statements(s) is (are) correct? (1) lf \[v={{v}_{0}},F=0\] (2) If \[v<{{v}_{0}},F\]acts outwards (3) If\[v>{{v}_{0}},F\]F acts inwards (4) If\[v=0,F=0\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer46) An electron in hydrogen atom first jumps from second excited state to first excited state and then from first excited state to ground state. Let the ratio of wavelength, momentum and energy of photons emitted in these two cases be a, b and c respectively. Then (1) \[c=\frac{9}{4}\]                        (2) \[c=\frac{5}{27}\] (3) \[a=\frac{9}{4}\]                        (4) \[b=\frac{5}{27}\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer47) Which of the following transitions in\[H{{e}^{+}}\]ion will give rise to a spectral line which has the same wavelength as some spectral line in the hydrogen atom? (1) n = 4 to n = 2                (2) n = 8 to n = 4 (3) n = 6 to n = 3                (4) n = 6 to n = 2
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer48) A solid transparent sphere has a small, opaque dot at its centre. When observed from outside, the apparent position of the dot will be (1) the same as its actual position (2) independent of the refractive index of the sphere (3) farther away from the eye than its actual position (4) closer to the eye than its actual position
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer49) The displacement of a string carrying a travelling sinusoidal wave is given by \[y=A\sin (kx-\omega t-\phi )\] At\[t=0,\]the particle at\[x=0\]is having half of the maximum amplitude and is moving in upward direction. The value of \[\phi \]may be (1) \[60{}^\circ \]                              (2) \[30{}^\circ \] (3) \[300{}^\circ \]                           (4) \[330{}^\circ \]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer50) A real object is moving towards a fixed spherical mirror. The image (1) may move away from the mirror (2) may move towards the mirror if mirror is concave (3) must move away from the mirror (4) may move towards the mirror if mirror is convex
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer51) The angular momentum of the electron in first excited energy state of hydrogen atom is
  A)
   \[\frac{h}{2\pi }\]
  done clear
  B)
   \[\frac{h}{\pi }\]
  done clear
  C)
   \[\sqrt{2(2+l)}\frac{h}{2\pi }\]                  
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer52) 75% of a first order reaction was completed in 32 min, when was 50% of the reaction completed?
  A)
   24 min                                 
  done clear
  B)
   16 min
  done clear
  C)
   8 min                                   
  done clear
  D)
   48 min
  done clear
  View Answer play_arrow

• question_answer53) Cyano benzene has
  A)
   7 sigma bonds and 4 pi bonds
  done clear
  B)
   7 sigma and 5 pi bonds
  done clear
  C)
    12 sigma and 6 pi bonds
  done clear
  D)
   13 sigma and 5 pi bonds
  done clear
  View Answer play_arrow

• question_answer54) The rate of diffusion of methane at a given temperature is twice that of a gas X. The molecular mass of X is
  A)
   4.0                                        
  done clear
  B)
   8.0
  done clear
  C)
   32.0                                      
  done clear
  D)
   64.0
  done clear
  View Answer play_arrow

• question_answer55) When phosphorus reacts with caustic soda, the products are PH3 and\[Na{{H}_{2}}P{{O}_{2}}\]. This reaction is an example of
  A)
   oxidation          
  done clear
  B)
   reduction
  done clear
  C)
   disproportionation        
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer56) For a gaseous reversible reaction, which of the following expressions is correct?
  A)
   \[{{K}_{c}}={{K}_{p}}{{(RT)}^{\Delta n}}\]           
  done clear
  B)
   \[{{K}_{p}}={{K}_{c}}+\Delta nRT\]
  done clear
  C)
   \[{{K}_{p}}={{K}_{x}}{{(p)}^{\Delta n}}\]             
  done clear
  D)
   \[{{K}_{p}}={{K}_{c}}(RT/\Delta n)\]
  done clear
  View Answer play_arrow

• question_answer57) A solution has\[{{H}^{+}}\]ion concentration 0.0005 M. Its\[pOH\]is
  A)
   8.279                                   
  done clear
  B)
   12.285
  done clear
  C)
   10.699                                 
  done clear
  D)
   13.335
  done clear
  View Answer play_arrow

• question_answer58) For a zero order reaction, \[A\xrightarrow{{}}P,{{t}_{1/2}}\] is\[(k\]is rate constant)
  A)
   \[\frac{{{[A]}_{0}}}{2k}\]                            
  done clear
  B)
   \[\frac{In\,2}{k}\]
  done clear
  C)
   \[\frac{1}{k{{[A]}_{0}}}\]                            
  done clear
  D)
   \[\frac{In\,2}{{{[A]}_{0}}k}\]
  done clear
  View Answer play_arrow

• question_answer59) The amount of heat released when 20 mL of \[0.5\text{ }M\text{ }NaOH\]is mixed with 100 mL of 0.1 M \[HCl\]is\[x\text{ }kJ\]. The heat of neutralisation (in kJ \[mo{{l}^{-1}}\]) is
  A)
   \[-100\text{ }x\]                             
  done clear
  B)
   \[-50\text{ }x\]
  done clear
  C)
    \[+100\text{ }x\]                           
  done clear
  D)
   \[+50\text{ }x\]
  done clear
  View Answer play_arrow

• question_answer60) Which of the following electrolyte has least molar conductivity?
  A)
  \[BeC{{l}_{2}}\]                                
  done clear
  B)
   \[BC{{l}_{3}}\]
  done clear
  C)
   \[LiCl\]                                
  done clear
  D)
   \[NaCl\]
  done clear
  View Answer play_arrow

• question_answer61) Gold number is associated with
  A)
   electrophoresis
  done clear
  B)
   purple of cassius
  done clear
  C)
   protective colloid
  done clear
  D)
   amount of pure gold
  done clear
  View Answer play_arrow

• question_answer62) \[{{H}_{2}}{{O}_{2}}\]is
  A)
   poor polar solvent than water
  done clear
  B)
   better polar solvent than\[{{H}_{2}}O\]
  done clear
  C)
    both have equal polarity
  done clear
  D)
   better polar solvent but its strong auto oxidising ability limits its use as such
  done clear
  View Answer play_arrow

• question_answer63) Sodium metal is kept under
  A)
   kerosene oil    
  done clear
  B)
   alcohol
  done clear
  C)
   water                                  
  done clear
  D)
   acids
  done clear
  View Answer play_arrow

• question_answer64) Which of the following has the highest calorific value?
  A)
   Coal gas                              
  done clear
  B)
   Water gas
  done clear
  C)
    Producer gas                   
  done clear
  D)
   Carbon dioxide gas
  done clear
  View Answer play_arrow

• question_answer65) Which out of the following is called sugar of lead?
  A)
   \[Pb{{(N{{O}_{3}})}_{2}}\]         
  done clear
  B)
  \[PbC{{l}_{2}}\]
  done clear
  C)
    \[PbC{{O}_{3}}.Pb{{(OH)}_{2}}\]            
  done clear
  D)
  \[Pb{{(C{{H}_{3}}COO)}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer66) Which one of the following is the true covalent oxide of iodine?
  A)
  \[{{I}_{2}}{{O}_{4}}\]                                     
  done clear
  B)
   \[{{I}_{2}}{{O}_{5}}\]
  done clear
  C)
   \[{{I}_{2}}{{O}_{7}}\]                                    
  done clear
  D)
   \[{{I}_{2}}{{O}_{9}}\]
  done clear
  View Answer play_arrow

• question_answer67) Which of the following two are isostructural?
  A)
   \[Xe{{F}_{2}},IF_{2}^{-}\]           
  done clear
  B)
  \[N{{H}_{3}},\text{ }B{{F}_{3}}\]
  done clear
  C)
   \[CO_{3}^{2-},SO_{3}^{2-}\]    
  done clear
  D)
   \[PC{{l}_{5}},\text{ I}C{{l}_{5}}\]
  done clear
  View Answer play_arrow

• question_answer68) The complex used as an anticancer agent is
  A)
   \[mer[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\]
  done clear
  B)
   \[cis[PtC{{l}_{2}}{{(N{{h}_{3}})}_{2}}]\]
  done clear
  C)
   \[cis\,{{K}_{2}}[PtC{{l}_{2}}B{{r}_{2}}]\]
  done clear
  D)
   \[N{{a}_{2}}[CoC{{l}_{4}}]\]
  done clear
  View Answer play_arrow

• question_answer69) The compoundis used as
  A)
   antiseptic          
  done clear
  B)
   antibiotic
  done clear
  C)
    analgesic   
  done clear
  D)
   pesticides
  done clear
  View Answer play_arrow

• question_answer70) In order to distinguish between\[{{C}_{2}}{{H}_{5}}N{{H}_{2}}\]and \[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]which of the following reagents is useful?
  A)
   Hinsberg reagent           
  done clear
  B)
  \[\beta -\]naphthol
  done clear
  C)
  \[CC{{l}_{3}}CHO\]                         
  done clear
  D)
  \[NaOH\]
  done clear
  View Answer play_arrow

• question_answer71) Which reducing agents of the following can be used for the following transformation? \[C{{H}_{3}}CH=CHCOOH\xrightarrow{{}}\]        \[C{{H}_{3}}CH=CHC{{H}_{2}}OH\]
  A)
  \[LiAl{{H}_{4}}\]                               
  done clear
  B)
   \[{{B}_{6}}{{H}_{6}}/THF\]
  done clear
  C)
  \[{{H}_{2}}/Ni\]                               
  done clear
  D)
  \[Na+{{C}_{2}}{{H}_{5}}OH\]
  done clear
  View Answer play_arrow

• question_answer72) Propyne on hydrolysis in presence of\[{{H}_{2}}S{{O}_{4}}\]and\[HgS{{O}_{4}}\]gives
  A)
   acetaldehyde                  
  done clear
  B)
   acetone
  done clear
  C)
   formaldehyde                 
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer73) What is the product obtained when chlorine reacts with ethyl alcohol in the presence of\[NaOH\]?
  A)
  \[C{{H}_{3}}Cl\]                               
  done clear
  B)
  \[{{C}_{2}}{{H}_{2}}Cl\]
  done clear
  C)
    \[CC{{l}_{3}}CHO\]       
  done clear
  D)
  \[CHC{{l}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer74) Benzene on ozonolysis yields
  A)
   glyoxal                                
  done clear
  B)
   acetone
  done clear
  C)
    ethanal                              
  done clear
  D)
   methanol
  done clear
  View Answer play_arrow

• question_answer75) How many structural isomers could be obtained from alkane\[{{C}_{6}}{{H}_{14}}\]?
  A)
   Four                                     
  done clear
  B)
   Five
  done clear
  C)
   Six                                        
  done clear
  D)
   Seven
  done clear
  View Answer play_arrow

• question_answer76) If equal volumes of\[0.1\text{ }M\text{ }HBr\]and\[0.1\text{ }M\text{ }KOH\]are mixed, then which of the following is/are correct about the resulting solution? (1)\[[{{H}_{3}}{{O}^{+}}]=1.0\times {{10}^{-7}}mol\text{ }{{L}^{-1}}\] (2)\[[O{{H}^{-}}]=1.0\times {{10}^{-7}}mol\text{ }{{L}^{-1}}\] (3)\[[{{K}^{+}}]=0.05\text{ }mol\text{ }{{L}^{-1}}\] (4)\[[B{{r}^{-}}]\text{ }=0.10\text{ }mol\text{ }{{\text{L}}^{-1}}\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer77) For a reaction to be spontaneous in neither direction which of the following is/are correct regarding the closed system? (1) \[{{(\Delta G)}_{T,P}}=0\]     (2) \[{{(\Delta G)}_{T,P}}<0\] (3) \[{{(\Delta S)}_{U,V}}=0\]    (4) \[{{(\Delta S)}_{V,V}}>0\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer78) The allotropic forms of carbon, good conductor of electricity are (1) diamond                       (2) graphite (3) fullerenes                     (4) gas carbon
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer79) Which of the solution will be acidic? (1)\[0.1\,M\,FeS{{O}_{4}}\] (2)\[0.1M{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] (3) \[0.1\text{ }M\,C{{H}_{3}}COONa\] (4)\[0.1\text{ }M\,N{{H}_{4}}OH\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer80) Which of the following is/are not path dependent? (1) Work                              (2) Enthalpy (3) Heat change                (4) Entropy
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer81) What happens when detergent is added to water? (1) The surface tension increase (2) Surface tension decrease (3) Viscosity decrease (4) Viscosity increase
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer82) Oxalates of alkaline earth metal (s) sparingly soluble in water are (1)\[Ba\]                              (2)\[Ca\] (3)\[Sr\]                               (4)\[Be\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer83) Diethyl ether can be distinguished from n-butanol by (1) aqueous\[FeC{{l}_{3}}\] (2) reaction with Na metal (3) Tollens' reagent (4) reaction with chromic anhydride\[(Cr{{O}_{3}})\]in dil.\[{{H}_{2}}S{{O}_{4}}\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer84) The acids which do not contain a\[COOH\]group (1) picric acid                      (2) lactic acid (3) carbolic acid                 (4) propanoic acid
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer85) Which of the following can act as a Lewis base? (1)\[NC{{l}_{3}}\]                             (2)\[PC{{l}_{3}}\] (3)\[NB{{r}_{3}}\]                            (4)\[SbC{{l}_{3}}\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer86) Auto reduction process is used for the extraction of (1)\[Cu\]                              (2)\[Hg\] (3)\[Pb\]                              (4)\[Al\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer87) \[{{K}_{4}}[Fe{{(CN)}_{6}}]\] is used for the detection of (1)\[Z{{n}^{2+}}\]ions                                    (2)\[C{{u}^{2+}}\]ions (3) \[F{{e}^{3+}}\]ions                   (4)\[F{{e}^{2+}}\]ions
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer88) Hydrogen can be obtained from water, by the action of water on (1) calcium carbide          (2) calcium hydride (3) calcium oxide              (4) calcium
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer89) Which of the following are ores of lead? (1) Galena                           (2) Anglesite (3) Cerussite                      (4) Plumbago
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer90) Which of the following have asymmetric carbon atom? (1)\[C{{H}_{2}}ClC{{H}_{2}}Br\] (2)\[C{{H}_{3}}CHDCl\] (3)\[C{{H}_{3}}CHC{{l}_{2}}\] (4)\[C{{H}_{2}}BrCHOHC{{H}_{3}}\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer91) Which of the following carbide can be used to prepare methane by its action with water? (1) Aluminium carbide (2) Beryllium carbide (3) Calcium carbide (4) Silicon carbide
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer92) Phenol is less acidic than (1) acetic acid                     (2) p-methoxyphenol (3) p-nitrophenol             (4) ethanol
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer93) The products of reaction of alcoholic silver nitrite with ethyl bromide are (1) ethanol                          (2) nitroethane (3) ethene                          (4) ethyl nitrite
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer94) The raw material to form nylon is (1) adipic acid (2) hexamethylene diamine (3) isoprene (4) butadiene
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer95) The base units that are present is DN/ (1) adenine                         (2) guanine (3) cytosine                        (4) uracil
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer96) The positive carbyl amine test is giver (1) N,N-dimethyl aniline (2) 2,4-dimethyl aniline (3) N-methyl-o-methyl aniline (4) p-methyl benzylamine
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer97) Which are reducing sugar? (1) Glucose                         (2) Fructose (3) Mannose                      (4) Sucrose
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer98) \[C{{O}_{2}}\]is isostructural with (1)\[HgC{{l}_{2}}\]                           (2)\[{{C}_{2}}{{H}_{2}}\] (3)\[SnC{{l}_{2}}\]                           (4)\[N{{O}_{2}}\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer99) The oxidation reactions are (1) \[S{{n}^{2+}}\xrightarrow[{}]{{}}S{{n}^{4+}}\]              (2)\[F{{e}^{3+}}\xrightarrow[{}]{{}}F{{e}^{2+}}\] (3) \[{{F}^{-}}\xrightarrow[{}]{{}}F\]                        (4)\[P{{b}^{2+}}\xrightarrow[{}]{{}}Pb\]
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer100) Decrease in atomic number is observed during: (1) alpha emission           (2) positron emission (3) electron emission     (4) beta emission
  A)
   1, 2 and 3 are correct
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer101) Cockroach and other insects have blood which
  A)
   resembles human blood in colour
  done clear
  B)
   Has RBCs
  done clear
  C)
   circulates through arteries and veins
  done clear
  D)
   circulates through an open system
  done clear
  View Answer play_arrow

• question_answer102) Albinos have been reported in
  A)
   white race                         
  done clear
  B)
   black race
  done clear
  C)
   both  and           
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer103) Cranial capacity of Australopithecus was
  A)
  \[350-450\text{ }c{{m}^{3}}\]                    
  done clear
  B)
   \[650-700\text{ }c{{m}^{3}}\]
  done clear
  C)
    \[1050-1150\text{ }c{{m}^{3}}\]              
  done clear
  D)
   \[1400-1450\text{ }c{{m}^{3}}\]
  done clear
  View Answer play_arrow

• question_answer104) Which law of evolution states that "warm-blooded" mammals of hot and humid areas have abundant melanin pigment ?
  A)
   Dollo's law                         
  done clear
  B)
   Gloger's law
  done clear
  C)
    Cope's law                       
  done clear
  D)
   Cause's law
  done clear
  View Answer play_arrow

• question_answer105) Reason of death of a patient of cobra-bite is
  A)
   destruction of RBCs
  done clear
  B)
   inactivarion of nerves
  done clear
  C)
   permanent contraction of muscles
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer106) The most important component of contraceptive pills is
  A)
   progesterone                  
  done clear
  B)
   growth hormone
  done clear
  C)
   thyroxine                          
  done clear
  D)
   luteinizing  hormone
  done clear
  View Answer play_arrow

• question_answer107) Yolk plug forms during
  A)
   morula-formarion
  done clear
  B)
   blastula-formation
  done clear
  C)
    gastrula                             
  done clear
  D)
   neurulation
  done clear
  View Answer play_arrow

• question_answer108) In which of the following only cone cells are found?
  A)
   Fovea centralis                
  done clear
  B)
   Retina
  done clear
  C)
    Fossa ovalis                     
  done clear
  D)
   Blind spots
  done clear
  View Answer play_arrow

• question_answer109) Hepatic portal system collects blood from
  A)
   liver                                     
  done clear
  B)
   lungs
  done clear
  C)
   kidney                                
  done clear
  D)
   alimentary canal
  done clear
  View Answer play_arrow

• question_answer110) The first digit of the forearm is termed
  A)
   pollex                                  
  done clear
  B)
   hallux
  done clear
  C)
   pollux                                  
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer111) Bidder's canal is meant for passage of
  A)
   ova                                       
  done clear
  B)
   urine
  done clear
  C)
   sperms                               
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer112) Striped muscle fibre has
  A)
   one nucleus                     
  done clear
  B)
   two nucleus
  done clear
  C)
   many nuclei                      
  done clear
  D)
   no nuclei
  done clear
  View Answer play_arrow

• question_answer113) Billroth's cords are characteristic of
  A)
   spinal cord                        
  done clear
  B)
   notochord
  done clear
  C)
   nerve cord                        
  done clear
  D)
   spleen
  done clear
  View Answer play_arrow

• question_answer114) Nuhn's  glands are present in
  A)
   intestine                            
  done clear
  B)
   tongue
  done clear
  C)
   skin                                      
  done clear
  D)
   stomach
  done clear
  View Answer play_arrow

• question_answer115) Amylopsin acts upon
  A)
   polysaccharide in any medium
  done clear
  B)
   polysaccharide in acidic medium
  done clear
  C)
   polysaccharide in alkaline medium
  done clear
  D)
   polypepddes                       
  done clear
  View Answer play_arrow

• question_answer116) Hypoxia is the condition in which less oxygen becomes available to the tissues. This may be due to
  A)
   lesser oxygen in the atmosphere
  done clear
  B)
   more CO in air
  done clear
  C)
   less RBCs in blood
  done clear
  D)
   all of the above
  done clear
  View Answer play_arrow

• question_answer117) Carotid labyrinth contains
  A)
   olfactoreceptors            
  done clear
  B)
   baroreceptors
  done clear
  C)
    chemoreceptors           
  done clear
  D)
   phonoreceptors
  done clear
  View Answer play_arrow

• question_answer118) Juxtaglomerular cells of renal cortex synthesizes a hormone called
  A)
   ADH                                     
  done clear
  B)
   oxytoxin
  done clear
  C)
   renin                                   
  done clear
  D)
   urochrome
  done clear
  View Answer play_arrow

• question_answer119) Corpora striata occur in
  A)
   cerebrum                          
  done clear
  B)
   cerebellum
  done clear
  C)
   medulla                              
  done clear
  D)
   diencephalon
  done clear
  View Answer play_arrow

• question_answer120) A point mutation comprising the substitution of purine by pyrimidine is called
  A)
   deletion                             
  done clear
  B)
   transition
  done clear
  C)
   transversion    
  done clear
  D)
   translocation
  done clear
  View Answer play_arrow

• question_answer121) Exoskeleton/scales are absent in
  A)
   fishes                                  
  done clear
  B)
   reptiles
  done clear
  C)
   Ichthyophis                      
  done clear
  D)
   Rana tigrina
  done clear
  View Answer play_arrow

• question_answer122) Gilt cover is absent in
  A)
   shark                                   
  done clear
  B)
   Labeo
  done clear
  C)
   salmon                               
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer123) The cyst wall of Euglena is made up of
  A)
   lipids                                    
  done clear
  B)
   histones
  done clear
  C)
   carbohydrates                 
  done clear
  D)
   lipoproteins
  done clear
  View Answer play_arrow

• question_answer124) The class of coelenterate which exhibits polymorphism ?
  A)
   Hydrozoa                           
  done clear
  B)
   Scyphozoa
  done clear
  C)
   Anthozoa                          
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer125) Which pairing is not correct?
  A)
   Stegomyia ? Yellow fever
  done clear
  B)
   Pediculus ?Trench fever
  done clear
  C)
   Culex ? Malaria
  done clear
  D)
   Xenopsylla ?Bubonic plague
  done clear
  View Answer play_arrow

• question_answer126) On the basis of nature of maternal and foetal tissue, types of placenata are (1) haemochorial placenta (2) haemoendothelial placenta (3) cotyledonary placenta (4) deciduate placenta
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer127) Antigenic determinant sites bind to which portions of an antibody molecule ? (1) light chain                     (2) heavy chain (3) intermediate chains                 (4) plasma cells
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
    2 and 4 are correct        
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer128) Types of quill (flight) feathers are (1) down feathers           (2) covert (3) filoplume                                      (4) remiges
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer129) Which of the following factors raise the \[{{\text{P}}_{\text{50}}}\] value and shifts the \[Hb{{O}_{2}}\]dissociation curve to right and vice versa ? (1) Rise in \[PC{{O}_{2}}\] (2) Rise in H+ ions (= fall in pH) (3) Fall in temperature (4) Fall in diphosphoglyceric acid
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer130) Which of the following are fat soluble vitamins ? (1) Retinol                           (2) Calciferol (3) Tocopherol                                  (4) Riboflavin
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer131) Uric acid is an excretory product of (1) insects                                           (2) birds (3) terrestrial reptiles     (4) mammals
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer132) Spongy or cancellous bones are (1) skull bones                                   (2) vertebrae (3) femur                             (4) ribs
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer133) Cowper's gland secrete a substance to (1) nourish sperms          (2) neutralize acidity (3) kill pathogens (4) lubricate female's vagina to facilitate copulation
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer134) The valve situated between the left atrium and left ventricle is called (1) bicuspid valve             (2) tricuspid valve (3) mitral valve                                  (4) eustachian valve
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer135) Bipolar neurons occur in (1) retina of eyes   (2) olfactory epithelium (3) inner ear       (4) brain
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer136) Cardiac muscles are (1) striated                          (2) voluntary (3) involuntary                                  (4) nonstriated
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
    2 and 4 are correct        
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer137) Anterior lobe of pituitary gland secretes (1) ACTH. TSH and oxytocin (2) STH, GH and TSH (3) TSH ADH and prolactin (4) FSH, GH and LH
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
    2 and 4 are correct        
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer138) Which of the following is true about preen gland? (1) Occur in birds (2) Also known as uropygial gland (3) Occur in bats (4) Help in digestion
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
    2 and 4 are correct        
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer139) Cartilaginous fishes have (1) placoid scales (2) cycloid or ctenoid scales (3) scroll valve (4) operculum
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer140) Which of the following belongs to phylum Arthropoda ? (1) Cockroach                                    (2) Goldfish (3) Silverfish                                       (4) Cuttlefish
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
    2 and 4 are correct        
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer141) Structures present in a mature proglottid are (1) a pair of longitudinal nerve cord (lateral nerve cord) (2) Mehli's gland (3) cirrus sac (4) one ovary and two oviducts
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer142) Proteolync enzymes present in the pancreatic juice are (1) pepsin                            (2) elastase (3) salivary amylase         (4) chymotrypsin
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer143) RBC and  adipose  tissue  cells  respire anaerobically because they (1) possess very few mitochondria (2) require much less energy (3) possess very few mitochondria and a large amount of energy (4) possess carbonic anhydrase
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer144) The coats of eyeball are (1) sclera                              (2) retina (3) conjunctiva                                  (4) otolith membrane
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer145) Which of the following structure is absent in forelimb of frog ? (1) Brachium                                      (2) Web (3) Antebrachium            (4) Tarsal
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer146) P-wave of ECG indicates (1) depolarization of atrial muscles (2) activation of SA-node (3) spread of excitation from SA node to AV node (4) repolarization of atria and depolarization of ventricles
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer147) Which of the following cranial nerves are mixed? (1) Vagus                                             (2) Trigeminal (3) GIossopharyngeal     (4) Auditory
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer148) Which of the following is correct grouping ? (1) Ectoderm?retina,epidermis, nervous system (2) Mesoderm?ovary,   urinary   bladder, Kidney (3) Mesoderm?kidney, connective tissue  testis (4) Endoderm?thyroid, pineal gland, thymus
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer149) Heterochro matin (1) contains a highly repetitice sequence of DNA (2) is the inert segment of the chromosome adjacent to the centromere (3) is tightly coiled during the in terphase (4) lightly stained regions
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer150) Which of the following are haploid in nature? (1) Spermatids (2) Secondary spermatocytes (3) Spermatogonia                    (4) Primary spermatocytes             
  A)
   1, 2 and 3 are correct    
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
   2 and 4 are correct         
  done clear
  D)
   1 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer151) Hormogonia are the vegetative reproductive structures of
  A)
   Chlamydomonas            
  done clear
  B)
   Spirogyra
  done clear
  C)
   Oscillatoria                        
  done clear
  D)
   Ulothrix
  done clear
  View Answer play_arrow

• question_answer152) Azotobacter and Beijerinckia are the examples  of
  A)
   symbiotic nitrogen-fixers
  done clear
  B)
   non-symbiotic nitrogen-fixers
  done clear
  C)
    ammonifying bacteria
  done clear
  D)
   disease causing bacteria
  done clear
  View Answer play_arrow

• question_answer153) Smilax a climbing genus belongs to      
  A)
   Cucurbitaceae                 
  done clear
  B)
   Solanaceae     
  done clear
  C)
   Liliaceae                             
  done clear
  D)
   Cruciferae     
  done clear
  View Answer play_arrow

• question_answer154) In certain pans of India, muscular dystrophy is commonly found amongst the poor peof because they eat cheap pulse from the planrl
  A)
   Pisum safiuvm                 
  done clear
  B)
   Lathyrus sadvus                    
  done clear
  C)
   Cicer arietinum            
  done clear
  D)
   Phaseolus mungo                  
  done clear
  View Answer play_arrow

• question_answer155) If a dwarf pea plant was created with gibberellic acid, it became as tall, as tall pea plants. If these pea plants are crossed with pure tall pea plants, what will be the phenotypic ratio in \[{{F}_{1}}\]generation?
  A)
   All dwarf plants
  done clear
  B)
   50% tall and 50% dwarf plants
  done clear
  C)
    75% tall and 25% dwarf plants
  done clear
  D)
   100% tall plants
  done clear
  View Answer play_arrow

• question_answer156) Colchicine is obtained from Colchicum automnale. It belongs to family
  A)
   Leguminosae                   
  done clear
  B)
   Solanaceae
  done clear
  C)
    Asteraceae                      
  done clear
  D)
   Liliaceae
  done clear
  View Answer play_arrow

• question_answer157) Moll's experiment explains that
  A)
   carbon dioxide is essential for photosynthesis
  done clear
  B)
   chlorophyll and water are necessary for photosynthesis
  done clear
  C)
   light and water are essential for photosynthesis
  done clear
  D)
   all of the above are correct
  done clear
  View Answer play_arrow

• question_answer158) Energy transfer from one traphic level to other in a food chain is
  A)
   10%                                      
  done clear
  B)
   20%
  done clear
  C)
   1%                                        
  done clear
  D)
   2%
  done clear
  View Answer play_arrow

• question_answer159) Stem is reduced in
  A)
   rhizome                             
  done clear
  B)
   corm
  done clear
  C)
    bulb                                    
  done clear
  D)
   tuber
  done clear
  View Answer play_arrow

• question_answer160) Heterophylly of Limnophila is
  A)
   environmental                
  done clear
  B)
   developmental
  done clear
  C)
    habitual                             
  done clear
  D)
   adaptive
  done clear
  View Answer play_arrow

• question_answer161) Synandrous condition is the fusion of
  A)
   filaments only
  done clear
  B)
   both filaments and anthers
  done clear
  C)
    anthers only
  done clear
  D)
   petals
  done clear
  View Answer play_arrow

• question_answer162) Which one yields sunn hemp?
  A)
   Corchorus                         
  done clear
  B)
   Hibiscus
  done clear
  C)
   Crotolaria                          
  done clear
  D)
   Cannabis
  done clear
  View Answer play_arrow

• question_answer163) Rod-shaped elongated thick-walled lignified dead cells found in seed coat of pulses (legumes) are
  A)
   macrosclereids                
  done clear
  B)
   astrosclereids
  done clear
  C)
   brachysclereids               
  done clear
  D)
   osteosclereids
  done clear
  View Answer play_arrow

• question_answer164) Dicot root having more than six vascular bundles are found in
  A)
   Pea                                      
  done clear
  B)
   Sunflower
  done clear
  C)
   Ficus                                    
  done clear
  D)
   Ranunculus
  done clear
  View Answer play_arrow

• question_answer165) Regulator gene controls chemical synthesis (Operon concept) by
  A)
   inhibiting transcription of mRNA
  done clear
  B)
   inhibiting enzymes
  done clear
  C)
   inhibiting passage of mRNA
  done clear
  D)
   inhibiting substrate enzyme reaction
  done clear
  View Answer play_arrow

• question_answer166) 'Illegitimate crossing over' is another term for
  A)
   transition
  done clear
  B)
   transversion
  done clear
  C)
   reciprocal translocation
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer167) A substance unrelated to substrate but capable of reversibly changing activity of enzyme by binding to a site other than active site is called
  A)
   competitive inhibitor
  done clear
  B)
   non-competitive inhibitor
  done clear
  C)
   catalytic inhibitor
  done clear
  D)
   allosteric modulator/inhibitor
  done clear
  View Answer play_arrow

• question_answer168) Golgi apparatus is absent in
  A)
   higher plants
  done clear
  B)
   yeast
  done clear
  C)
   bacteria and blue-green algae
  done clear
  D)
   liver cells
  done clear
  View Answer play_arrow

• question_answer169) Which one is common amongst nucleus, chloroplast and mitochondria?
  A)
   Cristae
  done clear
  B)
   Thylakoids
  done clear
  C)
   Nucleic acid
  done clear
  D)
   Carbohydrate metabolism
  done clear
  View Answer play_arrow

• question_answer170) Sporocarp is a reproductive structure of
  A)
   some algae
  done clear
  B)
   some aquatic ferns
  done clear
  C)
   angiosperms having spores
  done clear
  D)
   bryophyies
  done clear
  View Answer play_arrow

• question_answer171) Pond ecosystem shows
  A)
   inverted pyramid of number
  done clear
  B)
   inverted pyramid of biomass
  done clear
  C)
   upright pyramid of biomass
  done clear
  D)
   inverted pyramid of energy
  done clear
  View Answer play_arrow

• question_answer172) Under anaerobic conditions, bacterium Pseudomonos changes
  A)
   nitrate to molecular nitrogen
  done clear
  B)
   nitrate to ammonia
  done clear
  C)
   nitrate to nitrite
  done clear
  D)
   nitrite to nitrate
  done clear
  View Answer play_arrow

• question_answer173) Deciduous forests have
  A)
   variety of grasses           
  done clear
  B)
   broad-leaved trees
  done clear
  C)
    narrow-leaved trees   
  done clear
  D)
   variety of crocodiles
  done clear
  View Answer play_arrow

• question_answer174) Physiologically active form of phytochrome is
  A)
   \[{{\operatorname{P}}_{730}}/{{P}_{Fr}}\]                                        
  done clear
  B)
   \[{{\operatorname{P}}_{660}}/{{P}_{Fr}}\]
  done clear
  C)
   \[{{\operatorname{P}}_{700}}\]                             
  done clear
  D)
   \[{{\operatorname{P}}_{680}}\]
  done clear
  View Answer play_arrow

• question_answer175) The archesporium of ovule is
  A)
   Single celled terminal
  done clear
  B)
   Single celled central
  done clear
  C)
   Single celled hypodermal
  done clear
  D)
   Single celled lateral
  done clear
  View Answer play_arrow

• question_answer176) Pollen tube of Cycos acts (1) as an agent for carrying male gamete to the egg (2) as a haustorium (3) as endosperm (4) as female cone
  A)
   1,2 and 3 are correct     
  done clear
  B)
   1 and 2 are correct
  done clear
  C)
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• question_answer177) Which of the following conditions are necessary for the growth of the moulds, Mucor or Penicillium ? (1) Warmth                         (2) Carbohydrate (3) Water                             (4) Light
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• question_answer178) Latex vessels are found in (1) Calotropis                                     (2) Hevea (3) Oleander                                      (4) Papaya
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• question_answer179) Which of the following characteristics are associated with halophytes plants? (1) Presence of pneumatophores (2) Leaves and stem have hairy and waxy covering (3) Shows viviparous germination (4) Leaves show heterophylly
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• question_answer180) The characteristic feature of leghaernoglobin are (1) it is a source of energy (2) it is a pinkish colour pigment found in nodules (3) activated by the presence of Mg2+ ions (4) it protects  nitrogen Fixing enzyme nitrogenase from oxygen
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• question_answer181) Cyathium is characterised by (1) single female flower surrounded by many male flowers (2) as involucre of bracts enclosing all the flowers (3) fleshy   inflorescence   axis   with   a pearshaped cavity inside (4) single male flower surrounded by many female flowers
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• question_answer182) Parietal placentation is found in the members of                                      (1) family cucurbitaceae                (2) family solanaceae (3) family brassicaceae (4)family leguminosae
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• question_answer183) Which of the following is true regarding guttarion? (1) Occurs through stomata (2) Occurs through hydathodes (3) Loss of pure water (4) Occurs mostly during night and early morning
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• question_answer184) Which of the following statements are true for complementary genes?                   (1) Both the genes interact to produce a complementary new trait (2) Pair of nonallelic genes (3) The F2 ratio is generally 9:7 (4) The F2 ratio is generally 9:3:4
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• question_answer185) Coenzymes (1) act as a donor of groups of atoms added to the substrate                         (2) act as an acceptor of groups of atoms removed from the substrate (3) cannot be easily separated from apoenzyme                         (4) do not act as prosthetic group        
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• question_answer186) Suckers are                             (1) formed from the in ternode of underground stem (2) formed from the node of underground stem (3) roots which are formed from the upper portion of nodes (4) roots which are formed from the Iowa portion of nodes
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• question_answer187) Non-cyclic photophosphorylation produces (1) NADPH        (2) ATP and \[{{O}_{2}}\] (3) ATP only       (4) \[{{O}_{2}}\] only
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• question_answer188) \[{{C}_{4}}\]pathway occurs (1) only in monocots       (2) in monocots (3) in most of the dicots                (4) in few dicots
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• question_answer189) Link between glycolysis, Krebs' cycle and \[\text{ }\!\!\beta\!\!\text{ -}\]oxidation of fatty acid or carbohydrate and fat metabolism is (1) Acetyl CoA (2) a compound  formed by oxidative de-carboxylation (3) a 2-carbon compound (4) oxaloacetic acid
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• question_answer190) The enzymes taking part in recombinant DNA technology are (1) restriction endonuclease (2) ligase (3) reverse transcriptase (4) phosphatase
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• question_answer191) The mode of asexual reproduction in bacteria are (1) formation of gametes (2) endospore formation (3) conjugation (4) zoospores formation
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• question_answer192) Acid rain is caused by (1) sulphur dioxide          (2) hydrogen'chloride (3) nin-ogen oxides         (4) phosphates
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• question_answer193) Censer mechanism is found in (1) Aristolochia                                  (2) Anfirrhinum (4) Papaver                                         (4) Clematis
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• question_answer194) Aerenchyma is present in which of the following plants ? (1) Neptunia                                      (2) Potamogeton (3) Bryophyllum                                (4) Vallisneria
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• question_answer195) One intemode long phylloclade is found in (1) Ruscus                           (2) Opuntia (3) Asparagus                                    (4) Calotropis
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• question_answer196) In a dicor plant, the epibasal tier forms (1) cotyledons                                   (2) plumule (3) hypocotyl                                     (4) radical
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• question_answer197) Morphogenesis in plants is controlled by (1) Auxins                            (2) Gibberellins (3) Cytokinins                                    (4) Abscisic acid
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• question_answer198) Which of the following chemical reactions are associated with photorespiration? (1) \[\text{RuBP+O2}\,\xrightarrow{\text{RuBP}\,\text{oxygenase}}\underset{\text{+Phosphoglycolate}}{\mathop{\text{PGA}}}\,\] (2) \[\text{Glycolate+}{{\text{O}}_{\text{2}}}\,\xrightarrow{\text{Oxidase}}\text{Glyoxylate+}{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\] (3) \[\text{Glycolate+ATP}\,\xrightarrow[{{H}_{2}}]{Kinase}\] 3Phosphoglycerare+ADP (4) \[\text{RuBP+C}{{\text{O}}_{\text{2}}}\xrightarrow[\text{Carboxylase}]{\text{RuBP}}\text{2PGA}\]
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• question_answer199) Agar-agar is (1) a jelly like substance, employed in the manufacture of ice cream (2) used in culture medium for microorganisms as solidifying agent (3) obtained from Gelidium, Gracilaria (4) a product of brown algae
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• question_answer200) Epigeal germination occurs (1) due to the growth and elongation of hypocotyl (2) in papaya and cotton (3) in maize and rice (4) due to elongation of epicotyl -
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