Solved papers for BCECE Medical BCECE Medical Solved Papers-2013

done BCECE Medical Solved Papers-2013 Total Questions - 150

• question_answer1) The dimensions of universal gravitational constant are
  A)
   \[[{{M}^{-2}}{{L}^{-3}}{{T}^{-2}}]\]
  done clear
  B)
   \[[{{M}^{-2}}\,{{L}^{2}}\,{{T}^{-1}}]\]
  done clear
  C)
    \[[{{M}^{-1}}\,{{L}^{3}}\,{{T}^{-2}}]\]
  done clear
  D)
   \[[M{{L}^{2}}\,{{T}^{-1}}]\]
  done clear
  View Answer play_arrow

• question_answer2) If \[\left| A\times B \right|=\sqrt{3}\,\,A\,.\,B\] then the value of \[\left| A+B \right|\] is
  A)
   A + B
  done clear
  B)
   \[{{({{A}^{2}}+{{B}^{2}}+\sqrt{3}\,AB)}^{1/2}}\]
  done clear
  C)
   \[{{\left( {{A}^{2}}+{{B}^{2}}+\frac{AB}{\sqrt{3}} \right)}^{1/2}}\]
  done clear
  D)
   \[{{({{A}^{2}}+{{B}^{2}}+AB)}^{1/2}}\]
  done clear
  View Answer play_arrow

• question_answer3) Two spheres of masses m and M are situated in air and the gravitional force between them is F. The space around the masses is now filled with a liquid of specific gravity 3. The new gravitational force will be
  A)
   F                     
  done clear
  B)
   \[\frac{F}{3}\]
  done clear
  C)
   3F                  
  done clear
  D)
   \[\frac{F}{9}\]
  done clear
  View Answer play_arrow

• question_answer4) A body floats in water with one fourth of its volume above the surface of water. If placed in oil it floats with one third of its volume above the surface of oil. The density of oil is
  A)
   \[\frac{3}{4}\]
  done clear
  B)
   \[\frac{4}{9}\]
  done clear
  C)
   \[\frac{2}{3}\]                     
  done clear
  D)
   \[\frac{9}{8}\]
  done clear
  View Answer play_arrow

• question_answer5) When capillary tubes of different radii r dipped in water, water rises to different heights h in them, then
  A)
   \[{{h}^{2}}=\] constant      
  done clear
  B)
   hr = constant
  done clear
  C)
   \[\frac{h}{r}=\] constant        
  done clear
  D)
   \[\frac{h}{{{r}^{2}}}=\] constant
  done clear
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• question_answer6) In the adjoining figure A, B, and C represents three progressive waves. Which of the following statement about the waves is correct?
  A)
   Wave C lags behind in phase by \[\frac{\pi }{2}\] from A and. B leads by \[\frac{\pi }{2}\]
  done clear
  B)
   Wave C leads in phase by \[\pi \] from A and B lags behind by \[\pi \]
  done clear
  C)
   Wave C leads in phase by \[\frac{\pi }{2}\] from A and lags behind by \[\frac{\pi }{2}\]
  done clear
  D)
   Wave C lags behind in phase by \[\pi \] from A and B leads by \[\pi \]
  done clear
  View Answer play_arrow

• question_answer7) If 110 J of heat are added to a gaseous system, whose internal energy is 40 J, then the amount of external work done is
  A)
   40 J              
  done clear
  B)
   70 J
  done clear
  C)
   110 J             
  done clear
  D)
   150 J
  done clear
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• question_answer8) A ray is incident at an angle of incidence i on one surface of a prism of small angle A and emerges normally from the opposite surface. If the refractive index of the material of the prism is \[\mu \], the angle of incidence \[i\] is nearly equals to
  A)
   \[\mu \,A/2\]                 
  done clear
  B)
   \[A/2\,\mu \]
  done clear
  C)
    \[\mu \,A\]
  done clear
  D)
   \[A/\mu \]
  done clear
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• question_answer9) Figure below shows four plates each of area S separated from one another by a distance d. What is the capacitance between A and B?
  A)
   \[\frac{4{{\varepsilon }_{0}}3}{d}\]              
  done clear
  B)
   \[\frac{3{{\varepsilon }_{0}}5}{d}\]
  done clear
  C)
   \[\frac{2{{\varepsilon }_{0}}5}{d}\]            
  done clear
  D)
   \[\frac{{{\varepsilon }_{0}}5}{d}\]
  done clear
  View Answer play_arrow

• question_answer10) What is the value of current in the arm containing \[2\pi \] resistor in the adjoining circuit?
  A)
   0.7 amp          
  done clear
  B)
   1.2 amp
  done clear
  C)
   1.5 amp          
  done clear
  D)
   1.0 amp
  done clear
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• question_answer11) For ohmic conductor the drift velocity \[{{\upsilon }_{d}}\] and the electric field applied across it are related as
  A)
   \[{{v}_{d}}\propto \sqrt{E}\]
  done clear
  B)
   \[{{v}_{d}}\propto {{E}^{2}}\]
  done clear
  C)
   \[{{v}_{d}}\propto E\]
  done clear
  D)
   \[{{v}_{d}}\propto \frac{1}{E}\]
  done clear
  View Answer play_arrow

• question_answer12) If E and B be the electric and magnetic field vectors of electromagnetic waves, the direction of propagation of electromagnetic waves is that of
  A)
   E     
  done clear
  B)
   B     
  done clear
  C)
   E \[\times \] B   
  done clear
  D)
   B \[\times \] E
  done clear
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• question_answer13) The current in RCL circuit is maximum where
  A)
   \[{{X}_{L}}=0\]
  done clear
  B)
   \[{{X}_{L}}={{X}_{C}}\]
  done clear
  C)
   \[{{X}_{C}}=0\]            
  done clear
  D)
   \[X_{L}^{2}+X_{C}^{2}=1\]
  done clear
  View Answer play_arrow

• question_answer14) What is the value of \[\overline{A}\] + A in the boolean algebra?
  A)
   0     
  done clear
  B)
   1      
  done clear
  C)
   A     
  done clear
  D)
   A
  done clear
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• question_answer15) The truth table given below is for which gate?

  A	B	Y
  0	0	1
  0	1	1
  1	0	1
  1	1	0

  A)
   XOR            
  done clear
  B)
   OR
  done clear
  C)
   AND            
  done clear
  D)
   NAND
  done clear
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• question_answer16) The magnetic flux through a circuit of resistance R changes by an amount \[\Delta \phi \] in a time \[\Delta t\]. Then the total quantity of electric charge Q that passes any point in the circuit during the time \[\Delta t\] is represented by
  A)
   \[Q=\frac{\Delta \phi }{\Delta t}\]
  done clear
  B)
   \[Q=\frac{\Delta \phi }{R}\]
  done clear
  C)
   \[Q=R.\frac{\Delta \phi }{\Delta t}\]
  done clear
  D)
   \[Q=\frac{1}{R}\frac{\Delta \phi }{\Delta t}\]
  done clear
  View Answer play_arrow

• question_answer17) A particle moves along a circle of radius \[\left( \frac{20}{\pi } \right)\]m with constant tangential acceleration. If the velocity of the particle is 80 m/s at the end of the second revolution after motion has begun the tangential acceleration will be
  A)
   \[40\,\pi \,m/{{s}^{2}}\]
  done clear
  B)
   \[40\,m/{{s}^{2}}\]
  done clear
  C)
   \[160\,\pi \,m/{{s}^{2}}\]          
  done clear
  D)
   \[640\,\pi \,m/{{s}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer18) The output of a OR gate is 1
  A)
   if either input is zero
  done clear
  B)
   if both inputs are zero
  done clear
  C)
   only if both inputs are 1
  done clear
  D)
   if either or both inputs are 1
  done clear
  View Answer play_arrow

• question_answer19) Two 220 V, 100 W bulbs are connected first in series and then in parallel. Each time the combination is connected to a 220V AC supply line, the power drawn by the combination in each case respectively will be
  A)
   50 W, 200 W      
  done clear
  B)
   50 W, 20 W
  done clear
  C)
   100 W, 50 W       
  done clear
  D)
   200 W, 150 W
  done clear
  View Answer play_arrow

• question_answer20) Barrier potential of a p-n junction diode does not depend on
  A)
   diode design       
  done clear
  B)
   doping density
  done clear
  C)
   temperature        
  done clear
  D)
   farward bias
  done clear
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• question_answer21) A projectile is projected with a linear momentum p making an angle 9 with the horizontal. The change in momentum of the projectile on return to the ground will be
  A)
   \[2\,p\tan \theta \]
  done clear
  B)
   \[2\,p\sin \theta \]
  done clear
  C)
   \[2\,p\cos \theta \]
  done clear
  D)
   2p
  done clear
  View Answer play_arrow

• question_answer22) A weigthtless thread can bear tension up to 3.7 kg wt. A stone of mass 500 g is tied to it and revolved in a circular path of radius 4m in a vertical plane. If \[g=10\,m/{{s}^{2}}\], then the maximum angular velocity of the stone will be
  A)
   2 rad/s              
  done clear
  B)
   4 rad/s
  done clear
  C)
   16rad/s             
  done clear
  D)
   \[\sqrt{21}\] rad/s
  done clear
  View Answer play_arrow

• question_answer23) Under a constant torque, the angular momentum of a body changes from A to 4 A in 4 s. The torque is
  A)
   3 A     
  done clear
  B)
   \[\frac{1}{4}A\]
  done clear
  C)
   \[\frac{3}{4}A\]
  done clear
  D)
   \[\frac{4}{3}A\]
  done clear
  View Answer play_arrow

• question_answer24) The mass of a planet is double and its radius is half compared to that of earth. Assuming \[g=10\,m/{{s}^{2}}\] on earth, the acceleration due to gravity at the planet will be
  A)
   10 \[m/{{s}^{2}}\]           
  done clear
  B)
   20 \[m/{{s}^{2}}\]
  done clear
  C)
   40 \[m/{{s}^{2}}\]            
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer25) A soap bubble in vacuum, has a radius of 3 cm and another soap bubble in vacuum has a radius of 4 cm. If the two bubbles coalesce under isothermal condition, then the radius of new bubble is
  A)
   4.3cm          
  done clear
  B)
   4.5cm
  done clear
  C)
   5cm            
  done clear
  D)
   7cm
  done clear
  View Answer play_arrow

• question_answer26) Deuteron and a-particle are put \[1\overset{\text{o}}{\mathop{\text{A}}}\,\] apart in air. Magnitude of intensity of electric field due to deuteron of a-particle is
  A)
  zero                
  done clear
  B)
  \[2.88\times {{10}^{11}}N/C\]
  done clear
  C)
  \[1.44\times {{10}^{11}}N/C\]       
  done clear
  D)
  \[5.76\times {{10}^{11}}N/C\]
  done clear
  View Answer play_arrow

• question_answer27) The air column in pipe, which is closed at one end will be in resonance with a vibrating turning fork at a frequency of 260 Hz, if the length of the air column is
  A)
   31.73cm         
  done clear
  B)
   62.5cm
  done clear
  C)
   35.75cm         
  done clear
  D)
   12.5cm
  done clear
  View Answer play_arrow

• question_answer28) A ball strikes against the floor and returns with double the velocity. In which type of collision is it possible?
  A)
   Inelastic             
  done clear
  B)
   Perfectly inelastic
  done clear
  C)
   Perfectly elastic    
  done clear
  D)
   Not possible
  done clear
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• question_answer29) A body is under the action of three force \[{{F}_{1}},{{F}_{2}}\], and \[{{F}_{3}}\]. In which case the body cannot under go angular acceleration?
  A)
   \[{{F}_{1}}+{{F}_{2}}+{{F}_{3}}=0\]
  done clear
  B)
   \[{{F}_{1}},{{F}_{2}}\] and \[{{F}_{3}}\] are concurrent
  done clear
  C)
   \[{{F}_{1}}\], and \[{{F}_{2}}\] act at the same point but, \[{{F}_{3}}\]acts at different point
  done clear
  D)
   \[{{F}_{1}}+{{F}_{2}}\] is parallel to \[{{F}_{3}}\], but the three forces are not concurrent
  done clear
  View Answer play_arrow

• question_answer30) Two beams of protons moving parallel in same direction will
  A)
   repel each other
  done clear
  B)
   exert no force
  done clear
  C)
   attract each other
  done clear
  D)
   deflect perpendicular to the plane of the beams
  done clear
  View Answer play_arrow

• question_answer31) A photon and an electron possess same de-Broglie wavelength given that C = speed of light and \[\upsilon =\] space of electron, which of the following relation is correct? (here, \[{{E}_{e}}=K.\,E\] of electron, \[{{E}_{Ph}}=K.\,E\] of photon, \[{{P}_{e}}=\] momentum of electron, \[{{P}_{ph}}=\]momentum of photon)
  A)
   \[\frac{{{P}_{e}}}{{{P}_{Pn}}}=\frac{C}{2v}\]
  done clear
  B)
   \[\frac{{{E}_{e}}}{{{E}_{Pn}}}=\frac{C}{2v}\]
  done clear
  C)
   \[\frac{{{E}_{ph}}}{{{E}_{e}}}=\frac{2C}{v}\]
  done clear
  D)
   \[\frac{{{P}_{e}}}{{{P}_{ph}}}=\frac{2C}{v}\]
  done clear
  View Answer play_arrow

• question_answer32) To get an output Y == 1 from circuit of adjoining figure, the input must be
  A)
   A - 0     B - 1         C - 0
  done clear
  B)
   A - 1     B - 0      C - 0
  done clear
  C)
   A - 1     B - 0      C - 1
  done clear
  D)
   A - 1     B - 1     C - 0
  done clear
  View Answer play_arrow

• question_answer33) Hubbles law is expressed as (here, \[\upsilon =\] speed of recession, r = distance of galaxy, H = bubble constant)
  A)
   v = Hr              
  done clear
  B)
   \[v={{H}^{2}}r\]
  done clear
  C)
  (c )\[v=\frac{H}{{{r}^{2}}}\]              
  done clear
  D)
   \[v=H{{r}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer34) The displacement versus time graph for a body moving in a straight line is shown in figure. Which of the following regions represents motor when no force is acting on the body?
  A)
   ab     
  done clear
  B)
   be     
  done clear
  C)
   cd     
  done clear
  D)
   be
  done clear
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• question_answer35) Which of the following graphs shows the variation of magnetic field B, with distance from a long current carrying conductor?
  A)
    
  done clear
  B)
   
  done clear
  C)
    
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer36) The time period of a freely suspended magnet does not depend upon
  A)
   length of the magnet
  done clear
  B)
   the pole strength of the magnet
  done clear
  C)
   the horizontal component of magnetic field of earth
  done clear
  D)
   the length of the suspension
  done clear
  View Answer play_arrow

• question_answer37) The magnetic permeability is defined as the ratio of
  A)
   magnetic induction and magnetising field
  done clear
  B)
   intensity of magnetisation and magnetising field
  done clear
  C)
   intensity of magnetisation and magnetic field
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer38) Figure represents an area \[A=0.5\,\,{{m}^{2}}\] situated in a uniform magnetic field \[B=2.0\,\,Wb/{{m}^{2}}\] and making an angle of \[{{60}^{o}}\] with respect to magnetic field. The value of magnetic flux through the area will be
  A)
   0.5 Wb
  done clear
  B)
   \[\sqrt{3}\] Wb
  done clear
  C)
   \[\frac{3}{2}\] Wb             
  done clear
  D)
   2.0 Wb
  done clear
  View Answer play_arrow

• question_answer39) Of the given diodes, shown in the adjoining diagrams, which one is reverse biased?
  A)
   
  done clear
  B)
    
  done clear
  C)
   
  done clear
  D)
   
  done clear
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• question_answer40) Three particles each of mass m gram, are situated at the vertices of an equilateral triangle ABC of the side 1 cm. The moment of inertia of the system (as shown in figure) about a line AX perpendicular to AB and in the plane of ABC in gram- \[c{{m}^{2}}\] units will be
  A)
   \[\frac{3}{2}m{{l}^{2}}\]
  done clear
  B)
   \[\frac{3}{4}m{{l}^{2}}\]
  done clear
  C)
   \[2\,m{{l}^{2}}\]
  done clear
  D)
   \[\frac{5}{4}\,m{{l}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer41) A galvanometer of \[50\pi \] resistance has 25 divisions. A current of \[4\times {{10}^{-4}}A\] gives a deflection of one division. To convert this galvanometer into a voltmeter having a range of 25 volt, it should be connected with a resistance of
  A)
   245\[\pi \] as shunt      
  done clear
  B)
   2450\[\pi \] as series
  done clear
  C)
   2500\[\pi \] as shunt.     
  done clear
  D)
   2550\[\pi \] in series
  done clear
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• question_answer42) A car is moving towards a high cliff. The car driver sounds a horn of frequency \[f\]. The reflected sound heard by the driver has the frequency \[2f\]. If be the velocity of sound, then the velocity of the car, in the same velocity units will be
  A)
   \[\frac{v}{\sqrt{2}}\]
  done clear
  B)
   \[\frac{v}{2}\]
  done clear
  C)
   \[\frac{v}{3}\]
  done clear
  D)
   \[\frac{v}{4}\]
  done clear
  View Answer play_arrow

• question_answer43) A plane glass slab is kept over various coloured letters, the letter which appears least raised is
  A)
   violet   
  done clear
  B)
   blue    
  done clear
  C)
   green  
  done clear
  D)
   red
  done clear
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• question_answer44) If the angle of incidence is \[i\] and that of refraction is r. Then the speed of light in the medium to which the light is refracted from air is
  A)
   \[v=C\frac{\sin i}{\cos r}\]
  done clear
  B)
   \[v=C\frac{\cos r}{\cos i}\]
  done clear
  C)
   \[v=C\frac{\sin r}{\sin i}\]
  done clear
  D)
   \[v=C\frac{\sin i}{\sin r}\]
  done clear
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• question_answer45) An electron moves with a velocity v in an electric field E. If the angle between v and E is neither 0 nor \[\pi \], the path followed by the electron is
  A)
   parabola             
  done clear
  B)
   circle
  done clear
  C)
   straight-line          
  done clear
  D)
   ellipse
  done clear
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• question_answer46) The internal resistance of a cell of emf 2 V is 0. 1\[\pi \]. If it is connected to a resistance of 3.9 \[\pi \], then the voltage across the cell will be (in volts)
  A)
   2V                
  done clear
  B)
   0.5V
  done clear
  C)
   1.95V              
  done clear
  D)
   2.5V
  done clear
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• question_answer47) An electric kettle takes 4 A current a 1220V. How much time will it take to boil 1 kg of water from room temperature \[{{20}^{o}}C\]? (the temperature of boiling water is \[{{100}^{o}}C\])
  A)
   12.6 min
  done clear
  B)
   12.8 min
  done clear
  C)
   6.3 min
  done clear
  D)
   6.4 min
  done clear
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• question_answer48) The phenomenon of pair production is
  A)
   ejection of an electron from a nucleus
  done clear
  B)
   ejection of an electron from a metal surface
  done clear
  C)
   ionisation of a neutral atom
  done clear
  D)
   the production of an electron and a positron from \[\gamma \]-rays.
  done clear
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• question_answer49) In an electron microscope if the potential is increased from 20 kV to 80 kV, the resolving power R of the microscope will become
  A)
   0
  done clear
  B)
   W
  done clear
  C)
   4R
  done clear
  D)
   5R
  done clear
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• question_answer50) Force acting upon a charged particle kept between the plates of changed capacitor is F. If one of the plates of the capacitor is removed force acting on the same particle will become
  A)
   0 
  done clear
  B)
   F
  done clear
  C)
   \[\frac{F}{2}\]
  done clear
  D)
   2F
  done clear
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• question_answer51) \[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,}}\,-\overset{\begin{smallmatrix}  OH \\  | \end{smallmatrix}}{\mathop{C}}\,HC{{H}_{3}}\xrightarrow{HBr}\] A(Predominant) Identify A.
  A)
   \[{{(C{{H}_{3}})}_{2}}C\,(Br)\,CH\,{{(C{{H}_{3}})}_{2}}\]
  done clear
  B)
   \[{{(C{{H}_{3}})}_{3}}CCH\,(Br)\,C{{H}_{3}}\]
  done clear
  C)
   \[{{(C{{H}_{3}})}_{3}}COHBr\,C{{H}_{3}}\]
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer52) A P-hydroxy carbonyl compound is obtained by the action of \[NaOH\] on
  A)
   \[{{C}_{6}}{{H}_{5}}CHO\]
  done clear
  B)
   \[HCHO\]
  done clear
  C)
   \[C{{H}_{3}}CHO\]
  done clear
  D)
   \[{{(C{{H}_{3}})}_{3}}C.\,\,CHO\]
  done clear
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• question_answer53) Which of the following statements is correct?
  A)
   + / effect stabilises a carbanion
  done clear
  B)
   + / effect stabilises a carbocation
  done clear
  C)
   -/ effect stabilises a carbanion
  done clear
  D)
   - / effect stabilises a carbocation
  done clear
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• question_answer54) \[{{C}_{4}}{{H}_{6}}{{O}_{4}}A\xrightarrow{\Delta }{{C}_{3}}{{H}_{6}}{{O}_{2}}B\xrightarrow[\Delta ]{sodalime}C\] Compound C is a hydrocarbon, occupying approx 0.75 L volume per gram. Identify A and B.
  A)
   Tartaric acid, propanoic acid
  done clear
  B)
   Succinic acid, succinic anhydride
  done clear
  C)
   Maleic anhydride, maleic acid
  done clear
  D)
   Methyl malonic acid, propanoic acid
  done clear
  View Answer play_arrow

• question_answer55) What is effective nuclear charge and the periphery of nitrogen atom when an extra electron is added in the formation of an anion?
  A)
   1.20-                
  done clear
  B)
   2.45
  done clear
  C)
   3.55                 
  done clear
  D)
   5.95
  done clear
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• question_answer56) A certain metal sulphide, \[M{{S}_{2}}\], is used extensively as a high temperature lubricant. If \[M{{S}_{2}}\] has 40.06 % sulphur by weight, atomic mass of M will be
  A)
   100 amu 
  done clear
  B)
   96 amu
  done clear
  C)
   60 amu         
  done clear
  D)
   30 amu
  done clear
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• question_answer57) In HNC, which element has least value of formal charge?
  A)
   H                  
  done clear
  B)
   N
  done clear
  C)
   C                  
  done clear
  D)
   All have same value
  done clear
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• question_answer58) Consider following unit values of energy

  I. 1 L atm,

  II. 1 erg,

  III. 1 J

  IV. kcal,

  Increasing order of these values is
  A)
   I = II = III = IV     
  done clear
  B)
   l < II < III < IV
  done clear
  C)
   ll < lll < I < IV     
  done clear
  D)
   IV < l < III < II
  done clear
  View Answer play_arrow

• question_answer59) The number of elements in the transition metal series Sc through Zn that have four unpaired electrons in their + 2 state are
  A)
   2                      
  done clear
  B)
   4
  done clear
  C)
   5                      
  done clear
  D)
   6
  done clear
  View Answer play_arrow

• question_answer60) In an atmosphere with industrial smog, copper corrodes to

  I. \[C{{u}_{2}}{{(OH)}_{2}}S{{O}_{4}}\]

  II. \[C{{u}_{2}}{{(OH)}_{2}}C{{O}_{3}}\]

  III. \[CuS{{O}_{4}}\]

  IV. \[CuC{{O}_{3}}\]

  A)
   I and III
  done clear
  B)
   II and IV
  done clear
  C)
   I and IV
  done clear
  D)
   I and II
  done clear
  View Answer play_arrow

• question_answer61) Mischmetal is
  A)
   an alloy of lanthanide and nickel
  done clear
  B)
   an alloy of lanthanide and copper
  done clear
  C)
   an alloy of lanthanide, iron and carbon
  done clear
  D)
   an alloy of lanthanide, magnesium and nickel
  done clear
  View Answer play_arrow

• question_answer62) What is the oxidation state of iron in \[{{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{2+}}\]?
  A)
   0                     
  done clear
  B)
   +1
  done clear
  C)
   +2                   
  done clear
  D)
   +3
  done clear
  View Answer play_arrow

• question_answer63) Identify the final product of the reaction \[BC{{l}_{3}}+N{{H}_{4}}Cl\xrightarrow[{{C}_{6}}{{H}_{5}}Cl]{{{140}^{o}}C}\xrightarrow{NaB{{H}_{4}}}?\]
  A)
   \[{{B}_{3}}{{N}_{3}}{{H}_{6}}\]
  done clear
  B)
   \[{{B}_{2}}{{H}_{6}}\]
  done clear
  C)
   \[NaBC{{l}_{4}}\]
  done clear
  D)
   BN
  done clear
  View Answer play_arrow

• question_answer64) 2.56 g of sulphur in 100 g of \[C{{S}_{2}}\] has depression in freezing point of \[{{0.010}^{o}}C\]. Atomicity of sulphur in \[C{{S}_{2}}\] is (Given, \[{{K}_{f}}={{0.1}^{o}}\,mola{{l}^{-1}}\])
  A)
   2                      
  done clear
  B)
   4
  done clear
  C)
   6                      
  done clear
  D)
   8
  done clear
  View Answer play_arrow

• question_answer65) For the zeroth order reaction, sets I and II are given, hence \[x\]is

  I.

  II.

  A)
   2 min                
  done clear
  B)
   4 min
  done clear
  C)
   6 min                
  done clear
  D)
   8 min
  done clear
  View Answer play_arrow

• question_answer66) Equilibrium constant for the reaction, \[N{{H}_{4}}OH+{{H}^{+}}NH_{4}^{+}+{{H}_{2}}O\] is \[1.8\times {{10}^{9}}\]. Hence, equilibrium constant for\[N{{H}_{3}}\,\,(aq)+{{H}_{2}}ONH_{4}^{+}+O{{H}^{-}}\] is
  A)
   \[1.8\times {{10}^{-5}}\]   
  done clear
  B)
   \[1.8\times {{10}^{5}}\]
  done clear
  C)
   \[1.8\times {{10}^{-9}}\]
  done clear
  D)
   \[5.59\times {{10}^{-10}}\]
  done clear
  View Answer play_arrow

• question_answer67) Calculate pH change when 0.01 mol\[C{{H}_{3}}KCOO\] Na solution is added to 1 L of\[0.01\,\,M\,C{{H}_{3}}COOH\] solution. \[Ka\,\,(C{{H}_{3}}COOH)=1.8\times {{10}^{-5}},\,pKa=4.74\]
  A)
   3.37                
  done clear
  B)
   1.37
  done clear
  C)
   4.74                 
  done clear
  D)
   8.01
  done clear
  View Answer play_arrow

• question_answer68) \[p{{K}_{b}}\] of \[N{{H}_{3}}\] is 4.74 and \[p{{K}_{b}}\] of \[{{A}^{-}},\,{{B}^{-}}\]and \[{{C}^{-}}\] are 4, 5 and 6 respectively. Aqueous solution of 0.01 M has pH in the increasing order
  A)
   \[N{{H}_{4}}A<N{{H}_{4}}B<N{{H}_{4}}C\]
  done clear
  B)
   \[N{{H}_{4}}C<N{{H}_{4}}B<N{{H}_{4}}A\]
  done clear
  C)
   \[N{{H}_{4}}C<N{{H}_{4}}A<N{{H}_{4}}B\]
  done clear
  D)
   All have equal pH
  done clear
  View Answer play_arrow

• question_answer69) Osmotic pressure of insulin solution at 298 K is found to be 0.0072 atm. Hence, height of water column due to this pressure is [given d\[(Hg)=13.6\,\,g/mL\]]
  A)
   0.76cm          
  done clear
  B)
   0.70cm
  done clear
  C)
   7.4 cm           
  done clear
  D)
   76 cm
  done clear
  View Answer play_arrow

• question_answer70) \[\Delta {{G}^{o}}\] and \[\Delta {{H}^{o}}\] for a reaction at 300 K is \[-66.9\,kJ\,mo{{l}^{-1}}\] and \[-41.8\,kJ\,mo{{l}^{-1}}\]respectively. \[\Delta {{G}^{o}}\] for the same reaction at 330 K is
  A)
   \[-25.1\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  B)
   \[+25.1\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  C)
   \[18.7\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  D)
   \[-69.4\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer71) At 1000 K, from the data \[{{N}_{2}}(g)+3{{H}_{2}}(g)\xrightarrow{{}}2N{{H}_{3}}(g);\] \[\Delta H=-123.77\,kJ\,\,mo{{l}^{-1}}\]

  Substance	\[{{N}_{2}}\]	\[{{H}_{2}}\]	\[N{{H}_{3}}\]
  P/R	3.5	3.5	4

  Calculate the heat of formation of \[N{{H}_{3}}\] at 300 K.
  A)
   \[-44.42\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  B)
   \[-88.85\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  C)
   \[+44.42\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  D)
   \[+88.85\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer72) Match the electrode (in column I) with its general name (in Column II) and choose the correct option given below.

  	Column - I		Column - II
  A	Calomel	I.	Reference
  B	Glass	II.	Redox
  C	Hydrogen	III.	Membrane
  D	Quinhydrone	IV.	Gas

  A)
    A-III       B-III         C- IV        D-IV
  done clear
  B)
    A-IIII      B-IV         C-II          D-II
  done clear
  C)
    A-III        B-II          C-IV          D- I
  done clear
  D)
   A- II        B-IV         C- III          D-I
  done clear
  View Answer play_arrow

• question_answer73) In a Daniell cell constructed in the laboratory, the voltage observed was 0.9 V instead of 1.1 V of the standard cell. A possible explanation is
  A)
   \[[Z{{n}^{2+}}]>[C{{u}^{2+}}]\]
  done clear
  B)
   \[[Z{{n}^{2+}}]<[C{{u}^{2+}}]\]
  done clear
  C)
   Zn electrode has twice the surface of Cu electrode
  done clear
  D)
   mol ratio of \[Z{{n}^{2+}}:\,C{{u}^{2+}}\] is \[2:1\]  
  done clear
  View Answer play_arrow

• question_answer74) A quantity of electrical charge that brings about the deposition of 4.5 g Al from \[A{{l}^{3+}}\] at the cathode will also produce the following volume at (STP) of \[{{H}_{2}}(g)\]) from \[{{H}^{+}}\] at the cathode
  A)
   44.8 L               
  done clear
  B)
   22.4 L
  done clear
  C)
   11.2L               
  done clear
  D)
   5.6 L
  done clear
  View Answer play_arrow

• question_answer75) IUPAC name of the following compound is
  A)
   3-propyi cyclo [3, 6] octane
  done clear
  B)
   1-ethyl tricyclo [2, 3, 0] heptane
  done clear
  C)
   1-ethyl bicyclo [2, 2,1] heptane
  done clear
  D)
   4-ethyl bicyclo [2, 2, 2] heptane  .
  done clear
  View Answer play_arrow

• question_answer76) Identify Yin the following series of equation \[\to -H+B{{r}_{2}}\xrightarrow{h\upsilon }X\xrightarrow[{{D}_{2}}O]{Mg/ether}Y\]
  A)
          
  done clear
  B)
   
  done clear
  C)
        
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer77) Arrange the following in the order of rate of oxidation with periodic acid

  I. \[HOC{{H}_{2}}C{{H}_{2}}OH\],

  II. \[C{{H}_{3}}CHOHCHOHC{{H}_{3}}\]

  III. \[{{(C{{H}_{3}})}_{2}}COHCOH\,{{(C{{H}_{3}})}_{2}}\]

  A)
   I > II > III               
  done clear
  B)
   ll > I > III
  done clear
  C)
   III > II > I               
  done clear
  D)
   I > III = II
  done clear
  View Answer play_arrow

• question_answer78) Phenol and \[N{{H}_{3}}\] reacts in presence of \[ZnC{{l}_{2}}\]at \[{{300}^{o}}C\] to produce
  A)
   tertiary amine       
  done clear
  B)
   secondary amine
  done clear
  C)
   primary amine      
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer79) \[A\,\,[{{C}_{6}}{{H}_{10}}{{O}_{3}}\,(keto\text{ }ester)]\,\,\xrightarrow[\Delta ]{NaOH+{{I}_{2}}}\] yellow\[ppt+B\xrightarrow{{{H}^{+}}}\,C\xrightarrow[-C{{O}_{2}}]{\Delta }C{{H}_{3}}COOH\]. Hence, A is
  A)
   \[C{{H}_{3}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,C{{H}_{2}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,O{{C}_{2}}{{H}_{5}}\]
  done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,C{{H}_{2}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,OC{{H}_{3}}\] 
  done clear
  C)
   Both are correct   
  done clear
  D)
   None is correct
  done clear
  View Answer play_arrow

• question_answer80) \[C{{H}_{3}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,C{{H}_{3}}\] can be converted into \[C{{H}_{3}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,OH\]by following methods

  I. \[C{{H}_{3}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,C{{H}_{3}}\,\,\xrightarrow[\Delta ,\,{{H}^{+}}]{{{I}_{2}}/NaOH}\]

  II. \[C{{H}_{3}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,C{{H}_{3}}\,\,\xrightarrow{C{{r}_{2}}O_{7}^{2-}/{{H}^{+}}}\]

  III. \[C{{H}_{3}}\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,C{{H}_{3}}\,\,\xrightarrow{Ag(N{{H}_{3}})_{2}^{+}}\]

  Which method are most effective?
  A)
   I, III                         
  done clear
  B)
   II, III
  done clear
  C)
   I, II          
  done clear
  D)
   I, II, III
  done clear
  View Answer play_arrow

• question_answer81) Relative stabilities of the following carbocation will be in order

  \[\underset{IV}{\mathop{C{{H}_{3}}\overset{\oplus }{\mathop{C}}\,{{H}_{2}}}}\,\]

  A)
   IV < III < II < I      
  done clear
  B)
   IV < II < III < I
  done clear
  C)
   II < IV< III < I      
  done clear
  D)
   I < II < III < IV
  done clear
  View Answer play_arrow

• question_answer82) The correct statement in respect of protein haemoglobin is that it
  A)
   functions as a catalyst for biological reactions
  done clear
  B)
   maintains blood sugar level
  done clear
  C)
   acts as an oxygen carrier in the blood
  done clear
  D)
   forms antibodies and offers resistance to diseases
  done clear
  View Answer play_arrow

• question_answer83) \[C{{H}_{3}}COOH+HCOOH\xrightarrow[570\,\,K]{MnO}\] Main product of above reaction is
  A)
   \[C{{H}_{3}}CHO\]
  done clear
  B)
   \[C{{H}_{3}}COC{{H}_{3}}\]
  done clear
  C)
   \[HCHO\]
  done clear
  D)
   \[{{(C{{H}_{3}}CO)}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer84) Aniline is reacted with bromine water and the resulting product is treated with an aqueous solution of sodium nitrite in presence of dilute hydrochloric acid. The compound so formed is converted to a tetrafluoroborate which is subsequently heated. The final product is
  A)
   p-bromoaniline
  done clear
  B)
   p-bromofluorobenzene
  done clear
  C)
   1, 3, 5-tri bromobenzene
  done clear
  D)
   2, 4, 6-tribromofluorobenzene
  done clear
  View Answer play_arrow

• question_answer85) With hard water, ordinary soap forms curdy precipitate of
  A)
   \[{{(RCOO)}_{2}}Ca\]       
  done clear
  B)
   \[{{(RCOO)}_{2}}Mg\]
  done clear
  C)
   Both [a] and [b]    
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer86) Which is matched incorrectly? Structure            Compound
  A)
   
  done clear
  B)
   
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer87) Which base is normally found in RNA but not in DNA?
  A)
   Uracil
  done clear
  B)
   Thymine
  done clear
  C)
   Guanine
  done clear
  D)
   Adenine
  done clear
  View Answer play_arrow

• question_answer88) The dipole moment of HBr is \[2.60\times {{10}^{-30}}cm\]and the interatomic spacing is \[1.41\,\overset{o}{\mathop{A}}\,\]. What is the per cent ionic character of \[HBr\]?
  A)
   50 %    
  done clear
  B)
   11.5 %  
  done clear
  C)
   4.01 %  
  done clear
  D)
   1.19 %
  done clear
  View Answer play_arrow

• question_answer89) An element is oxidised by fluorine and not by chlorine. Identify the element.
  A)
   Sodium            
  done clear
  B)
   Aluminium
  done clear
  C)
   Oxygen            
  done clear
  D)
   Sulphur
  done clear
  View Answer play_arrow

• question_answer90) The reduction of an oxide by aluminium is called
  A)
   Krolls process
  done clear
  B)
   van Arkel process
  done clear
  C)
   Ellingham process
  done clear
  D)
   Goldschmidts aluminothermite process
  done clear
  View Answer play_arrow

• question_answer91) \[{{H}_{2}}\] gas is liberated at cathode and anode both by electrolysis of the following solution except in
  A)
   \[NaCl\]
  done clear
  B)
   \[NaH\]
  done clear
  C)
   \[LiH\]
  done clear
  D)
   \[HCOONa\]
  done clear
  View Answer play_arrow

• question_answer92) Identify [A] and [B] in the following sequence of reactions. \[SnC{{l}_{2}}+2NaOH\xrightarrow{{}}(A)\,\] (white ppt) \[\xrightarrow[(excess)]{NaOH}(B)\]
  A)
   \[Sn{{(OH)}_{2}},\,N{{a}_{2}}Sn{{O}_{3}}\]
  done clear
  B)
   \[Sn{{(OH)}_{2}},\,N{{a}_{2}}Sn{{O}_{2}}\]
  done clear
  C)
   \[Sn{{(OH)}_{2}},\,N{{a}_{2}}[Sn{{[OH)}_{2}}]\]
  done clear
  D)
   \[Sn{{(OH)}_{2}}\], no effect
  done clear
  View Answer play_arrow

• question_answer93) Nature of nitride ion is
  A)
   acidic              
  done clear
  B)
   basic
  done clear
  C)
   amphiprotic          
  done clear
  D)
   cannot predict
  done clear
  View Answer play_arrow

• question_answer94) Wave number of spectral line for a given transition is \[x\,c{{m}^{-1}}\] for \[H{{e}^{+}}\], then its value for \[B{{e}^{3+}}\] (isoelectronic of \[H{{e}^{+}}\]) for same transition is
  A)
   \[\frac{x}{4}c{{m}^{-1}}\]         
  done clear
  B)
   \[x\,c{{m}^{-1}}\]
  done clear
  C)
   \[4x\,c{{m}^{-1}}\]          
  done clear
  D)
   \[16x\,c{{m}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer95) \[{{H}_{2}}{{O}_{2}}\] oxidises \[Mn{{O}_{2}}\] is \[MnO_{4}^{-}\] in basic medium, \[{{H}_{2}}{{O}_{2}}\] and \[Mn{{O}_{2}}\] react in the molar ratio of
  A)
   1 : 1     
  done clear
  B)
   2 : 1    
  done clear
  C)
   2 : 3    
  done clear
  D)
   3 : 2
  done clear
  View Answer play_arrow

• question_answer96) mL of an aqueous solution of KC1 was found to require 20 mL of 1 M \[AgN{{O}_{3}}\] solution when titrated using a \[{{K}_{2}}Cr{{O}_{4}}\] as indicator. Depression in freezing point of \[KCl\] solution with 100% ionisation will be [\[{{K}_{F}}={{2.0}^{o}}\,mo{{l}^{-1}}kg\], molarity = molality]
  A)
   \[{{3.2}^{o}}\]
  done clear
  B)
   \[{{1.6}^{o}}\]
  done clear
  C)
   \[{{0.8}^{o}}\]             
  done clear
  D)
   \[{{5.0}^{o}}\]
  done clear
  View Answer play_arrow

• question_answer97) Out of the following, select Lux-Flood Acid
  A)
   \[C{{O}_{2}}\]               
  done clear
  B)
   \[B{{F}_{3}}\]
  done clear
  C)
   \[{{H}^{+}}\]
  done clear
  D)
   \[Al{{(C{{H}_{3}})}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer98) On adding \[AgN{{O}_{3}}\] solution into \[Kl\] solution, a negatively charged colloidal sol. is obtained when they are in
  A)
   100 m L of \[0.1\,\,M\,AgN{{O}_{3}}+100\,mL\] of 0.1 M KI
  done clear
  B)
   100 mL of \[0.1\,\,M\,AgN{{O}_{3}}+100\,mL\] of 0.2 mKI
  done clear
  C)
   100 mL of \[0.1\,\,M\,AgN{{O}_{3}}+100\,mL\] of 0.1 M KI
  done clear
  D)
   100 mL of \[0.15\,\,M\,AgN{{O}_{3}}+100\,mL\] of 0.15 MKI
  done clear
  View Answer play_arrow

• question_answer99) Graph between \[\log \left( \frac{x}{m} \right)\] and log d is a straight line at angle \[{{45}^{o}}\] with intercept OA as shown. Hence, \[\left( \frac{x}{m} \right)\] at a pressure of 0.2 aim is
  A)
   0.8
  done clear
  B)
   0.6
  done clear
  C)
   0.4                    
  done clear
  D)
   0.2
  done clear
  View Answer play_arrow

• question_answer100) From the following reactions at 298 K, [a] \[Ca{{C}_{2}}(s)+2{{H}_{2}}O\,(l)\xrightarrow{{}}Ca{{(OH)}_{2}}(g)\]\[+{{C}_{2}}{{H}_{2}}(g)\,D{{H}^{o}}(kJ\,mo{{l}^{-1}})-127.9\] [b] \[Ca\,(s)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}CaO(s)-635.1\] [c] \[CaO(s)+{{H}_{2}}O(I)\xrightarrow{{}}Ca{{(OH)}_{2}}\]  \[-(s)-65.2\] [d] \[C\,\,(s)+{{O}_{2}}(s)\xrightarrow{{}}C{{O}_{2}}(s)-393.5\] [e] \[{{C}_{2}}{{H}_{2}}(g)+\frac{5}{2}{{O}_{2}}(g)\xrightarrow{{}}2C{{O}_{2}}(g)\] \[+{{H}_{2}}O\,(e)-1299.58\] Calculate the heat of formation of \[Ca{{C}_{2}}(s)\] at 298 K.
  A)
   \[-59.82\,KJ\,\,mo{{l}^{-1}}\]   
  done clear
  B)
   \[+59.82\,KJ\,\,mo{{l}^{-1}}\]
  done clear
  C)
   \[-190.22\,KJ\,\,mo{{l}^{-1}}\]
  done clear
  D)
   \[+190.22\,KJ\,\,mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer101) Pineapple (annanas) fruit develops from
  A)
   a unilocular polycarpellary flower
  done clear
  B)
   a multipistillate syncarpous flower
  done clear
  C)
   a cluster of compactly borne flowers on a common axis
  done clear
  D)
   a multilocular monocarpellary flower
  done clear
  View Answer play_arrow

• question_answer102) Parthenocarpic tomato fruits can be produced by
  A)
   removing androecium of flowers before pollen grains are released
  done clear
  B)
   treating the plants with low concentrations of gibberellic acid and auxins
  done clear
  C)
   raising the plants from vernalized seeds
  done clear
  D)
   treating the plants with phenylmercuric acetate
  done clear
  View Answer play_arrow

• question_answer103) The blue baby syndrome results from
  A)
   excess of chloride
  done clear
  B)
   methaemoglobin
  done clear
  C)
   excess of dissolved oxygen
  done clear
  D)
   excess of TDS (Total Dissolved Solids)
  done clear
  View Answer play_arrow

• question_answer104) Which one of the following statements is correct?
  A)
   Neurons regulate endocrine activity, but not wee versa |
  done clear
  B)
   Endocrine glands regulate neural activity and nervous system regulates endocrine glands
  done clear
  C)
   Neither hormones control neural activity nor the neurons control endocrine activity
  done clear
  D)
   Endocrine glands regulate neural activity, but not vice versa
  done clear
  View Answer play_arrow

• question_answer105) Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?
  A)
   Frequent irrigation of the crop
  done clear
  B)
   Treatment of the paints with cytokinins along with a small dose of nitrogenous fertiliser
  done clear
  C)
   Removal of ail yellow leaves and spraying the remaining green leaves with 2, 4, 5-trichlorophenoxy acetic acid
  done clear
  D)
   Application of iron and magnesium to promote synthesis of chlorophyll
  done clear
  View Answer play_arrow

• question_answer106) Which one of the following amino acids was not found to be synthesised in Millers experiment?
  A)
   Glycine              
  done clear
  B)
   Aspartic acid
  done clear
  C)
   Glutamic acid        
  done clear
  D)
   Alanine
  done clear
  View Answer play_arrow

• question_answer107) Crop plants grown in monoculture are
  A)
   low in yield
  done clear
  B)
   free from intraspecific competition
  done clear
  C)
   characterised by poor root system,
  done clear
  D)
   highly prone to pests
  done clear
  View Answer play_arrow

• question_answer108) The formula for exponential population growth is
  A)
   \[dt/dN=rN\]       
  done clear
  B)
   \[dN/rN=dt\]
  done clear
  C)
   \[rN/dN=dt\]
  done clear
  D)
   \[dN/dt=rN\]
  done clear
  View Answer play_arrow

• question_answer109) In photosystem-I, the first electron acceptor is
  A)
   ferredoxin           
  done clear
  B)
   cytochrome
  done clear
  C)
   plastocyanin
  done clear
  D)
            an iron-sulphur protein
  done clear
  View Answer play_arrow

• question_answer110) Which one of the following is the most suitable, medium for culture of Drosophila melanogaster?
  A)
   Moist bread        
  done clear
  B)
   Agar agar
  done clear
  C)
   Ripe banana        
  done clear
  D)
   Cow dung
  done clear
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• question_answer111) Which antibiotic inhibits interaction between rRNA and wRNA during bacterial protein synthesis?
  A)
   Erythromycjn
  done clear
  B)
   Neomycin
  done clear
  C)
   Streptomycin
  done clear
  D)
  Tetracycline
  done clear
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• question_answer112) Photochemical smog pollution does not contain
  A)
   ozone
  done clear
  B)
   nitrogen dioxide
  done clear
  C)
   carbon dioxide
  done clear
  D)
   PAN (Peroxy AcyI Nitrate)
  done clear
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• question_answer113) The thalloid body of a slime mould (Myxomycetes) is known as
  A)
   protonema         
  done clear
  B)
   Plasmodium
  done clear
  C)
   fruiting body        
  done clear
  D)
   mycelium
  done clear
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• question_answer114) What type of placentation is seen in sweet pea?
  A)
   Basal
  done clear
  B)
   Axile
  done clear
  C)
   Free central         
  done clear
  D)
   Marginal
  done clear
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• question_answer115) Long filamentous threads protruding at the end of a young cob of maize are
  A)
   anthers               
  done clear
  B)
   styles
  done clear
  C)
   ovaries               
  done clear
  D)
   hairs
  done clear
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• question_answer116) How many different kinds of gametes will be produced by a plant having the genotype AABbCC?
  A)
   Three               
  done clear
  B)
   Four
  done clear
  C)
   Nine                
  done clear
  D)
   Two
  done clear
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• question_answer117) Which of the following statements regarding mitochondrial membrane is not correct?
  A)
   The outer membrane is permeable to all kinds of molecules
  done clear
  B)
   The enzymes of the electron transfer chain are embedded in the outer membrane
  done clear
  C)
   The inner membrane is highly convoluted forming a series of infoldings
  done clear
  D)
   The outer membrane resembles a sieve
  done clear
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• question_answer118) An organic substance bound to an enzyme and essential for its activity is called
  A)
   coenzyme         
  done clear
  B)
   holoenzyme
  done clear
  C)
   apoenzyme        
  done clear
  D)
   isoenzyme
  done clear
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• question_answer119) Bowmans glands are found in
  A)
   olfactory epithelium
  done clear
  B)
   external auditory ca. ial
  done clear
  C)
   cortical nephrons only
  done clear
  D)
   juxtamedullary nephrons
  done clear
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• question_answer120) The bacterium (Clostridium botulinum) that causes botulism is
  A)
   a facultative anaerobe
  done clear
  B)
   an obligate anaerobe
  done clear
  C)
   a facultative aerobe
  done clear
  D)
   an obligate aerobe
  done clear
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• question_answer121) Sulphur is an important nutrient for optimum growth and productivity in
  A)
   pulse crops          
  done clear
  B)
   cereals
  done clear
  C)
   fibre crops           
  done clear
  D)
   oilseed crops
  done clear
  View Answer play_arrow

• question_answer122) In a moss the sporophyte
  A)
   is partially parasitic on the gametophyte
  done clear
  B)
   produces gametes that give rise to the gametophyte
  done clear
  C)
   arises from a spore produced from the gametophyte
  done clear
  D)
   manufactures food for itself, as well as for the gametophyte
  done clear
  View Answer play_arrow

• question_answer123) Curing of tea leaves is brought about by the activity of
  A)
   bacteria             
  done clear
  B)
   mycorrhiza
  done clear
  C)
   viruses              
  done clear
  D)
   fungi
  done clear
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• question_answer124) Annual migration does not occur in the case of
  A)
   salmon             
  done clear
  B)
   Siberian crane
  done clear
  C)
   salamander        
  done clear
  D)
   arctic tern
  done clear
  View Answer play_arrow

• question_answer125) A major break through in the studies of cells came with the development of electron microscope. This is because
  A)
   the resolution power of the electron microscope is much higher than that of the light microscope
  done clear
  B)
   the resolving power of the electron microscope is 200 - 350 nm as compared to 0.1 - 0.2 nm for the light microscope
  done clear
  C)
   electron beam can pass through thick materials, whereas light microscopy requires thin sections
  done clear
  D)
   the electron microscope is more powerful than the light microscope as it uses a beam of electrons which has wavelength much longer than that of photons
  done clear
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• question_answer126) Metameric segmentation is the characteristic of
  A)
   Platyhelminthes and Arthropoda
  done clear
  B)
   Echinodermata and Annelida
  done clear
  C)
   Annelida and Arthropoda
  done clear
  D)
   Mollusca and Chordata
  done clear
  View Answer play_arrow

• question_answer127) What is common about Trypanosoma, Noctiluca, Monocystis and Giardiat
  A)
   These are all unicellular protists
  done clear
  B)
   They have flagella
  done clear
  C)
   They produce spores
  done clear
  D)
   These are ail parasites
  done clear
  View Answer play_arrow

• question_answer128) Evolutionary history of an organism is known as
  A)
   Phylogeny          
  done clear
  B)
   Ancestry
  done clear
  C)
   Paleontology    
  done clear
  D)
   Ontogeny
  done clear
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• question_answer129) Which of the following is considered a hot-spot of biodiversity in India?
  A)
   Western ghats       
  done clear
  B)
   Indo-Gangetic plain
  done clear
  C)
   Eastern ghats        
  done clear
  D)
   Aravalli hills
  done clear
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• question_answer130) Which one of the following is an example of polygenic inheritance?
  A)
   Flower colour in Mirabilis jalapa
  done clear
  B)
   Production of male honey bee
  done clear
  C)
   Pod shape in garden pea
  done clear
  D)
   Skin colour in humans
  done clear
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• question_answer131) Which one of the following not act as a neurotransmitter?
  A)
   Acetylcholine        
  done clear
  B)
   Epinephrine
  done clear
  C)
   Nor epinephrine     
  done clear
  D)
   Cortisone
  done clear
  View Answer play_arrow

• question_answer132) A steroid hormone which regulates glucose metabolism is
  A)
   cortisol
  done clear
  B)
   corticosterone
  done clear
  C)
   1-1-deoxycorticosterone
  done clear
  D)
   cortisone
  done clear
  View Answer play_arrow

• question_answer133) Which one of the following is not a second messenger in hormone action?
  A)
   cGMP  
  done clear
  B)
   Calcium
  done clear
  C)
   Sodium
  done clear
  D)
   cAMP
  done clear
  View Answer play_arrow

• question_answer134) In Mendels experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (IT), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the \[{{F}_{2}}\] generation of the cross RRYY \[x\] rryy?
  A)
   Only round seeds with green cotyledons
  done clear
  B)
   Only wrinkled seeds with yellow cotyledons
  done clear
  C)
   Only wrinkled seeds with green cotyledons
  done clear
  D)
   Round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons
  done clear
  View Answer play_arrow

• question_answer135) One turn of the helix in a B-form DNA is approximately
  A)
   20 nm
  done clear
  B)
   0.34 nm
  done clear
  C)
   3.4 nm            
  done clear
  D)
   2 nm
  done clear
  View Answer play_arrow

• question_answer136) Antiparallel strands of a DNA molecule means that
  A)
   one strand turns anti-clockwise
  done clear
  B)
   the phosphate groups of two DNA strands, at their ends, share the same position
  done clear
  C)
   the phosphate groups at the start of two DNA strands are in opposite position (pole)
  done clear
  D)
   one strand turns clockwise
  done clear
  View Answer play_arrow

• question_answer137) Mast cells secrete
  A)
   hippurin            
  done clear
  B)
   myoglobin
  done clear
  C)
   histamine           
  done clear
  D)
   haemoglobin
  done clear
  View Answer play_arrow

• question_answer138) If a colourblind woman marries a normal visioned man, their sons will be
  A)
   all normal visioned
  done clear
  B)
   one-half colourblind and one-half normal
  done clear
  C)
   three-fourths colourbling and one-fourth normal
  done clear
  D)
   all colourblind
  done clear
  View Answer play_arrow

• question_answer139) Antibodies in our body are complex
  A)
   lipoproteins          
  done clear
  B)
   steroids
  done clear
  C)
   prostaglandins       
  done clear
  D)
   glycoproteins
  done clear
  View Answer play_arrow

• question_answer140) Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste water into natural surface water, is
  A)
   < 3.0 ppm
  done clear
  B)
   < 10 ppm
  done clear
  C)
   < 100ppm
  done clear
  D)
   < 30 ppm
  done clear
  View Answer play_arrow

• question_answer141) Earthworms are
  A)
   ureotelic when plenty of water is available
  done clear
  B)
   uricotelic when plenty of water is available
  done clear
  C)
   uricotelic under conditions of water scarcity
  done clear
  D)
   ammonotelic when plenty of water is available
  done clear
  View Answer play_arrow

• question_answer142) Withdrawal of which of the following hormones is the immediate cause of menstruation?
  A)
   Oestrogens
  done clear
  B)
   FSH
  done clear
  C)
   FSH-RH
  done clear
  D)
   Progesterone
  done clear
  View Answer play_arrow

• question_answer143) Which one of the following statements is incorrect?
  A)
   The residual air in lungs slightly decreases the efficiency of respiration in mammals
  done clear
  B)
   The presence of non-respiratory air sacs, increases the efficiency of respiration in birds
  done clear
  C)
   (n insects, circulating body fluids serve to distribute oxygen to tissues
  done clear
  D)
   The principle of countercurrent flow facilitates efficient respiration in gills of fishes
  done clear
  View Answer play_arrow

• question_answer144) The translocation of organic solutes in sieve tube members is supported by
  A)
   root pressure and transpiration pull
  done clear
  B)
   P-proteins
  done clear
  C)
   mass flow involving a carrier and ATP
  done clear
  D)
   cytoplasmic streaming
  done clear
  View Answer play_arrow

• question_answer145) An enzyme that can stimulate germination of barley seeds is
  A)
   a-amylase           
  done clear
  B)
   lipase
  done clear
  C)
   protease            
  done clear
  D)
   invertase
  done clear
  View Answer play_arrow

• question_answer146) In a cereal grain the single cotyledon of embryo is represented by
  A)
   coleorhiza           
  done clear
  B)
   scutellum
  done clear
  C)
   prophyll             
  done clear
  D)
   coleoptile
  done clear
  View Answer play_arrow

• question_answer147) The majority of carbon dioxide produced by our body cells is transported to the lungs
  A)
   dissolved in the blood
  done clear
  B)
   as bicarbonates
  done clear
  C)
   as carbonates
  done clear
  D)
   attached to haemoglobin
  done clear
  View Answer play_arrow

• question_answer148) In order to obtain virus-free plants through tissue culture the best method is
  A)
   protoplast culture    
  done clear
  B)
   embryo rescue
  done clear
  C)
   anther culture        
  done clear
  D)
   meristem culture
  done clear
  View Answer play_arrow

• question_answer149) Sickle-cell anaemia has not been eliminated from the African population because
  A)
   it is controlled by recessive genes
  done clear
  B)
   it is not a fatal disease
  done clear
  C)
   it provides immunity against malaria
  done clear
  D)
   it is controlled by dominant genes
  done clear
  View Answer play_arrow

• question_answer150) Both sickle-cell anaemia and Huntingtons chorea are
  A)
   bacteria-related diseases
  done clear
  B)
   congenital disorders 
  done clear
  C)
   pollutant-induced disorders
  done clear
  D)
   virus-related diseases
  done clear
  View Answer play_arrow