Solved papers for BCECE Medical BCECE Medical Solved Papers-2012

done BCECE Medical Solved Papers-2012 Total Questions - 150

• question_answer1) The dimensional formula of wave number is
  A)
   \[[{{M}^{0}}{{L}^{0}}{{T}^{0}}]\]
  done clear
  B)
   \[[{{M}^{0}}{{L}^{-1}}{{T}^{0}}]\]
  done clear
  C)
   \[[{{M}^{0}}{{L}^{0}}{{T}^{-1}}]\]
  done clear
  D)
   \[[{{M}^{-1}}{{L}^{-1}}{{T}^{0}}]\]
  done clear
  View Answer play_arrow

• question_answer2) A body of mass m is moving in a circle of radius r with a constant speed \[\upsilon \]. If a force \[\frac{m{{v}^{2}}}{r}\] is acting on the body towards the centre, then what will be the work done by this force in moving the body over half the circumference of the circle?
  A)
   Zero           
  done clear
  B)
   \[\frac{m{{v}^{2}}}{{{r}^{2}}}\]
  done clear
  C)
   \[\frac{m{{v}^{2}}}{r}\times \pi r\]
  done clear
  D)
   \[\frac{\pi {{r}^{2}}}{m{{v}^{2}}}\]
  done clear
  View Answer play_arrow

• question_answer3) If under the action of a force \[(4i+j+3k)\,N\], a   particle moves from position \[{{r}_{1}}=3i+2j-6k\] to position \[{{r}_{2}}=14i+13j+9k\], then the work done will be
  A)
   50 J           
  done clear
  B)
   75 J
  done clear
  C)
   300 J          
  done clear
  D)
   175 J
  done clear
  View Answer play_arrow

• question_answer4) A particle of mass m moving with velocity u makes an elastic one dimensional collision with a stationary particle of mass m. They are in contact for a short time T. Their force of interaction increases from zero to \[{{F}_{0}}\] linearly in time \[\frac{T}{2}\] and decreases linearly to zero in further time \[\frac{T}{2}\] (shown in figure). The magnitude of \[{{F}_{0}}\] is
  A)
   \[mu/2T\]       
  done clear
  B)
   mu/T
  done clear
  C)
   2mu/T        
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer5) Two planets revolves around the sun with frequencies \[{{N}_{1}}\] and \[{{N}_{2}}\] revolutions per year. If their average radii (orbital) be \[{{R}_{1}}\] and \[{{R}_{2}}\] respectively, then \[{{R}_{1}}/{{R}_{2}}\] is equal to
  A)
   \[{{({{N}_{1}}/{{N}_{2}})}^{2/3}}\]
  done clear
  B)
   \[{{({{N}_{1}}/{{N}_{2}})}^{3/2}}\]
  done clear
  C)
   \[{{({{N}_{2}}/{{N}_{1}})}^{2/3}}\]
  done clear
  D)
   \[{{({{N}_{2}}/{{N}_{1}})}^{3/2}}\]
  done clear
  View Answer play_arrow

• question_answer6) To what height water should be filled in a container of height 21 cm, so that it appears as half filled when viewed from the top \[\left( Tak{{e}_{a}}{{\mu }_{w}}=\frac{4}{3} \right)\]
  A)
   12 cm         
  done clear
  B)
   15 cm
  done clear
  C)
   10.5 cm       
  done clear
  D)
   7 cm
  done clear
  View Answer play_arrow

• question_answer7) A progressive wave is represented as \[y=0.2\cos \pi \left( 0.04+0.2x-\frac{\pi }{6} \right)\] where distance is expressed in cm and time in second. What will be the minimum distance between two particles having the phase difference of \[\frac{\pi }{2}\]?
  A)
   4 cm          
  done clear
  B)
   8 cm
  done clear
  C)
   25 cm         
  done clear
  D)
   12.5 cm
  done clear
  View Answer play_arrow

• question_answer8) When the temperature increases, then the frequency of the sound produced by the organ pipe will
  A)
   unchanged
  done clear
  B)
   increases
  done clear
  C)
   decreases
  done clear
  D)
   Not definite
  done clear
  View Answer play_arrow

• question_answer9) The distance between the poles of a horse shoe magnet is 0.1 m and its pole strength is 0.01 A-m. The induction of magnetic field at a point mid way between the poles will be
  A)
   Zero          
  done clear
  B)
   \[2\times {{10}^{-5}}T\]
  done clear
  C)
   \[4\times {{10}^{-6}}T\]
  done clear
  D)
   \[8\times {{10}^{-7}}T\]
  done clear
  View Answer play_arrow

• question_answer10) Which logic gate is represented by the following combination of logic gates?
  A)
   OR          
  done clear
  B)
   NAND
  done clear
  C)
   XOR         
  done clear
  D)
   None of these
  done clear
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• question_answer11) For the transistor circuit shown in figure, if\[\beta =100\], voltage drop across emitter and base is 0.7 V, then the value of \[{{V}_{CE}}\] will be
  A)
   Zero           
  done clear
  B)
   5 V
  done clear
  C)
   10 V           
  done clear
  D)
   13 V
  done clear
  View Answer play_arrow

• question_answer12) If a uniform solid sphere and a disc of same mass and same radius rolls down on an inclined smooth plane from rest to the same distance, then the ratio of the time taken by them will be
  A)
   15 : 14        
  done clear
  B)
   \[\sqrt{14}\,:\,\sqrt{15}\]
  done clear
  C)
   14 : 15        
  done clear
  D)
   \[{{15}^{2}}\,:\,{{14}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer13) If a stone is projected from ground with a velocity \[50\,m{{s}^{-1}}\] and at an angle of \[{{30}^{o}}\], it takes 3 s to cross a wall. How far beyond the wall the stone will strike the ground? (Take \[g=10\,\,m{{s}^{-2}}\])
  A)
   50.5 m         
  done clear
  B)
   91.5 m
  done clear
  C)
   86.6 m         
  done clear
  D)
   100 m 
  done clear
  View Answer play_arrow

• question_answer14) For a body starting from rest, what will be the ratio of the distance travelled by the body during the 4th and 3rd second during its journey?
  A)
   \[\frac{7}{5}\]
  done clear
  B)
   \[\frac{7}{3}\]
  done clear
  C)
   \[\frac{5}{7}\]                
  done clear
  D)
   \[\frac{3}{7}\]
  done clear
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• question_answer15) If the compressibility of water is a (sigma) per unit atmospheric pressure, then the decrease in volume V due to p, atmospheric pressure will be
  A)
   \[\sigma V/p\]    
  done clear
  B)
   \[\sigma pV\]
  done clear
  C)
   \[\sigma /pV\]      
  done clear
  D)
   \[\sigma p/V\]
  done clear
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• question_answer16) A soap film of surface tension \[3\times {{10}^{-2}}N{{m}^{-1}}\] formed in a rectangular frame, can support  a straw. If the length of the film is 10 cm, then the mass of the straw that film can support is
  A)
   0.06 g           
  done clear
  B)
   0.6 g
  done clear
  C)
   6g             
  done clear
  D)
   60g
  done clear
  View Answer play_arrow

• question_answer17) There are two identical small holes of area of cross section a on the either sides of a tank containing a liquid of density \[\rho \] (shown in figure). The difference in height between the holes is ft. Tank is resting on a smooth horizontal surface. Horizontal force which will has to be applied on the tank to keep it in equilibrium is
  A)
   \[\frac{2gh}{\rho a}\]
  done clear
  B)
   \[\frac{\rho gh}{a}\]
  done clear
  C)
   \[gh\rho a\]
  done clear
  D)
   \[2\rho agh\]
  done clear
  View Answer play_arrow

• question_answer18) Certain amount of an ideal gas of molecular mass M is contained in a closed vessel. If the vessel is moving with a constant velocity v, then the rise in temperature of the gas when the vessel is suddenly stopped will be \[\left( Take\,\,\gamma =\frac{{{C}_{p}}}{{{C}_{V}}} \right)\]
  A)
   \[\frac{M{{v}^{2}}}{2\,R(\gamma +1)}\]
  done clear
  B)
   \[\frac{M{{v}^{2}}}{2\,R(\gamma -1)}\]
  done clear
  C)
   \[\frac{M{{v}^{2}}(\gamma -1)}{2\,R}\]
  done clear
  D)
   \[\frac{M{{v}^{2}}(\gamma +1)}{2\,R}\]
  done clear
  View Answer play_arrow

• question_answer19) Water and turpentine oil (specific heat less than that of water) are both heated to same temperature. Equal amounts of both are then placed in identical calorimeters and then left in air
  A)
   A and B will represent cooling curves of water and oil respectively
  done clear
  B)
   B and A will represent cooling curves of water and oil respectively
  done clear
  C)
   their cooling curves will be identical
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer20) By suspending a mass of 0.50 kg a spring is stretched by 8.20 m. If a mass of 0.25 kg is suspended, then its period of oscillation will be (Take \[g=10\,\,m{{s}^{-2}}\])
  A)
   0.137 s        
  done clear
  B)
   0.328 s
  done clear
  C)
   0.628 s        
  done clear
  D)
   1.00 s
  done clear
  View Answer play_arrow

• question_answer21) If the period of revolution of a nearest satellite around a planet of radius R is T then its period of revolution around another planet, having radius 3JR and same density will be
  A)
   T              
  done clear
  B)
   3T
  done clear
  C)
   3V3T          
  done clear
  D)
   9T
  done clear
  View Answer play_arrow

• question_answer22) A body of mass m is suspended from a string of length \[l\]. What is the minimum horizontal velocity that should be given to the body at its lowest position so that it may complete one full revolution in the vertical plane with the point of suspension as the centre of the circle?
  A)
   \[v=\sqrt{2lg}\]
  done clear
  B)
   \[v=\sqrt{3lg}\]
  done clear
  C)
   \[v=\sqrt{4lg}\]
  done clear
  D)
   \[v=\sqrt{5lg}\]
  done clear
  View Answer play_arrow

• question_answer23) Rest mass energy of an electron is 0.54 MeV. If velocity of the electron is 0.8 C, then its kinetic energy will be
  A)
   0.36 MeV
  done clear
  B)
   0.41 MeV
  done clear
  C)
   0.48 MeV
  done clear
  D)
   1.32 MeV
  done clear
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• question_answer24) Which one of the following graphs represents the graph between the instantaneous concentration (N) of a radioactive element and time (t)?
  A)
    
  done clear
  B)
   
  done clear
  C)
    
  done clear
  D)
   
  done clear
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• question_answer25) In the circuit given below the value of current is
  A)
   0             
  done clear
  B)
   \[{{10}^{-2}}A\]
  done clear
  C)
   \[{{10}^{2}}A\]
  done clear
  D)
   \[{{10}^{-3}}A\]
  done clear
  View Answer play_arrow

• question_answer26) In a diode AM detector, the output circuit consists of \[R=1\,k\Omega \] and \[C=10\,pF\]. A carrier signal of 100 k Hz is to be detected. Is it good?
  A)
   Yes
  done clear
  B)
   No
  done clear
  C)
   Information is not sufficient
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer27) Let a straight wire of length I carries a current\[i\]. The magnitude of magnetic field produced by the current at point P (as shown in figure) is
  A)
   \[\frac{{{\mu }_{0}}i}{2\sqrt{2}\pi l}\]         
  done clear
  B)
   \[\frac{\sqrt{2}{{\mu }_{0}}i}{8\pi l}\]
  done clear
  C)
   \[\frac{{{\mu }_{0}}i}{4\pi l}\]
  done clear
  D)
   \[\frac{\sqrt{2}{{\mu }_{0}}i}{\pi l}\]
  done clear
  View Answer play_arrow

• question_answer28) 0.8 J work is done in rotating a magnet by \[{{60}^{o}}\], placed parallel to a uniform magnetic field. How much work is done in rotating it \[{{30}^{o}}\]further?
  A)
   \[0.8\times {{10}^{7}}\,erg\]
  done clear
  B)
   0.8 erg
  done clear
  C)
   8J
  done clear
  D)
   0.4 J
  done clear
  View Answer play_arrow

• question_answer29) The magnetic moment produced in a substance of 1 g is \[6\times {{10}^{-7}}\,\,A-{{m}^{2}}\]. If its density is \[5\,g\,c{{m}^{-3}}\], then the intensity of magnetisation in A/m will be
  A)
   3.0          
  done clear
  B)
   \[3\times {{10}^{-6}}\]
  done clear
  C)
   \[8.3\times {{10}^{6}}\]
  done clear
  D)
   \[1.2\times {{10}^{-7}}\]
  done clear
  View Answer play_arrow

• question_answer30) In which of the following circuit is the current maximum just after the switch S is closed?
  A)
   (i)             
  done clear
  B)
   (ii)
  done clear
  C)
   (iii)            
  done clear
  D)
   Both (ii) and (iii)
  done clear
  View Answer play_arrow

• question_answer31) Let ABC is a right angled triangle in which AB = 3 cm and BC = 4 cm and \[\angle ABC={{90}^{o}}\]. The three charges +15, +12 and -20 esu are placed on 4, B and C respectively. The force acting on B will be
  A)
   Zero          
  done clear
  B)
   25 dyne
  done clear
  C)
   30 dyne       
  done clear
  D)
   150 dyne
  done clear
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• question_answer32) Four plates of same area of cross-section are joined as shown in figure. The distance between each plate is d. The equivalent capacity between A and B will be
  A)
   \[\frac{2\,{{\varepsilon }_{0}}\,A}{d}\]    
  done clear
  B)
   \[\frac{{{\varepsilon }_{0}}\,A}{d}\]
  done clear
  C)
   \[\frac{3{{\varepsilon }_{0}}\,A}{d}\]
  done clear
  D)
   \[\frac{3{{\varepsilon }_{0}}\,A}{2\,d}\]
  done clear
  View Answer play_arrow

• question_answer33) If a voltmeter of resistance 1000 \[\Omega \] is connected across a resistance of 500 \[\Omega \]  in the given circuit, then the reading of voltmeter will be
  A)
   1 V  
  done clear
  B)
   2 V  
  done clear
  C)
   6 V
  done clear
  D)
   4 V
  done clear
  View Answer play_arrow

• question_answer34) In the grid circuit of a triode a signal \[E=2\sqrt{2}\cos \,\omega t\] is applied. If \[\mu =14\] and\[{{r}_{p}}=10\,\,k\Omega \], then rms current flowing through \[{{R}_{L}}=12\,k\Omega \] will be
  A)
   1.5 mA        
  done clear
  B)
   1.27 mA
  done clear
  C)
   10 mA       
  done clear
  D)
   12.4 mA
  done clear
  View Answer play_arrow

• question_answer35) A rigid body of mass m rotates with angular velocity g) about an axis at a distance a from the centre of mass C. The radius of gyration about C is K. Then, kinetic energy of rotation of the body about new parallel axis is
  A)
   \[\frac{1}{2}m{{K}^{2}}{{\omega }^{2}}\]
  done clear
  B)
   \[\frac{1}{2}m{{a}^{2}}{{\omega }^{2}}\]
  done clear
  C)
   \[\frac{1}{2}m(a+{{K}^{2}}){{\omega }^{2}}\]
  done clear
  D)
   \[\frac{1}{2}m({{a}^{2}}+{{K}^{2}}){{\omega }^{2}}\]
  done clear
  View Answer play_arrow

• question_answer36) The angle of contact between glass and water is \[{{0}^{o}}\] and it rises in a capillary upto 6 cm when its surface tension is 70 dyne/cm. Another liquid of surface tension 140 dyne/cm, angle of contact \[{{60}^{o}}\] and relative density 2 will rise in the same capillary by
  A)
   3 cm          
  done clear
  B)
   16 cm
  done clear
  C)
   12 cm         
  done clear
  D)
   24 cm
  done clear
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• question_answer37) If the height of a mercury barometer is 75 cm at sea level and 50 cm at the top of a hill and the ratio of density of mercury to that of air is  \[{{10}^{4}}\] then the height of the hill is
  A)
   1.25 km      
  done clear
  B)
   2.5 km
  done clear
  C)
   250 m        
  done clear
  D)
   750 m
  done clear
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• question_answer38) If the displacement equation of a particle from its mean position is given as   \[y=0.2\sin \,(10\pi t+1.5\pi )cos(10\pi t+1.5\pi )\] then, the motion of particle is
  A)
   anon-periodic
  done clear
  B)
   periodic but not SHM
  done clear
  C)
   SHM with period 0.2 s
  done clear
  D)
   SHM with period 0.1 s
  done clear
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• question_answer39) Let PQR is a right angled prism with other angles as \[{{60}^{o}}\] and \[{{30}^{o}}\]. PQ has a thin layer of liquid and light falls normally oh the face PR as shown in figure. If the refractive index of prism is 1.5, then for total internal reflection, maximum refractive index of liquid will be
  A)
   1.2              
  done clear
  B)
   1.3
  done clear
  C)
   1.4              
  done clear
  D)
   1.5
  done clear
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• question_answer40) According to corpuscular theory of light, the different colours of light are due to
  A)
   different size of the corpuscules
  done clear
  B)
   different electromagnetic waves
  done clear
  C)
   different force of attraction among the corpuscles
  done clear
  D)
   None of the above
  done clear
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• question_answer41) An antenna is a device
  A)
   that converts radio frequency signal into electromagnetic theory
  done clear
  B)
   that converts electromagnetic energy into radio frequency signal
  done clear
  C)
   that converts guided electromagnetic waves into free space electromagnetic waves and vice-versa
  done clear
  D)
   None of the above
  done clear
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• question_answer42) A resistor R, inductor L and a capacitor C are connected in series to an oscillator of frequency v. If the resonant frequency is \[{{v}_{r}}\], theft the current lags behind the voltage, when
  A)
   \[v=0\]
  done clear
  B)
   \[v<{{v}_{r}}\]
  done clear
  C)
   \[v>{{v}_{r}}\]
  done clear
  D)
   \[v={{v}_{r}}\]
  done clear
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• question_answer43) The instantaneous values of current and voltage in an AC circuit are  \[i=100\sin 314t\] amp and \[e=200\sin \left( 314t+\frac{\pi }{3} \right)V\] respectively. If the resistance is \[1\,\Omega \], then the reactance of the circuit will be
  A)
   \[\sqrt{3}\,\Omega \]
  done clear
  B)
   \[100\sqrt{3}\,\Omega \]
  done clear
  C)
   \[-200\sqrt{3}\,\Omega \]
  done clear
  D)
   \[-200/\sqrt{3}\,\Omega \]
  done clear
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• question_answer44) When green light is incident on the surface of a metal. It emits photo electrons but there is no such emission with yellow colour light. Which one of the colour can produce emission of photo electrons?
  A)
   Red           
  done clear
  B)
   Indigo
  done clear
  C)
   Orange        
  done clear
  D)
   None of these
  done clear
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• question_answer45) If an electron jumps from the 4th orbit to the 2nd orbit of hydrogen atom, then the frequency of emitted radiation in the hertz will be (Take Rydbergs constant, \[R={{10}^{5}}\,c{{m}^{-1}}\])
  A)
   \[\frac{3}{4}\times {{10}^{15}}\]
  done clear
  B)
   \[\frac{3}{16}\times {{10}^{15}}\]
  done clear
  C)
   \[\frac{3}{16}\times {{10}^{15}}\]
  done clear
  D)
   \[\frac{9}{16}\times {{10}^{15}}\]
  done clear
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• question_answer46) If the ratio of radii of nuclei \[_{13}^{27}\]Al and \[_{52}^{A}X\] is 3 : 5, then the number of neutrons in the nuclei of X will be
  A)
   13             
  done clear
  B)
   52
  done clear
  C)
   100            
  done clear
  D)
   73
  done clear
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• question_answer47) Number of nuclei of a radioactive substance at time t = 0 are 1000 and 900 at time t = 2 s. What will be the number of nuclei at time t = 4 s?
  A)
   810           
  done clear
  B)
   800
  done clear
  C)
   790           
  done clear
  D)
   700
  done clear
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• question_answer48) A bar magnet has coercivity \[4\times {{10}^{3}}A{{m}^{-1}}\]. It is desired to demagnetise it by inserting it inside a solenoid 12 cm long and having 60 turns. The current that should be sent through the solenoid is
  A)
   8 A            
  done clear
  B)
   10A
  done clear
  C)
   12 A          
  done clear
  D)
   14 A
  done clear
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• question_answer49) A potentiometer is an ideal device of measuring potential difference because
  A)
   it uses a sensitive galvanometer
  done clear
  B)
   it is an elaborate arrangement
  done clear
  C)
   it has a long wire hence heat developed is quickly radiated
  done clear
  D)
   it does not disturb the potential difference it measures
  done clear
  View Answer play_arrow

• question_answer50) If the momentum of a body is increased by n times, then its kinetic energy increases
  A)
   n times        
  done clear
  B)
   \[{{n}^{2}}\] times
  done clear
  C)
   \[2n\] times       
  done clear
  D)
   \[\sqrt{n}\] times
  done clear
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• question_answer51) When 1 mole gas is heated at constant volume, temperature is raised from 298 K to 308K. Heat supplied to the gas is 500 J. Then which statement is correct?
  A)
   \[q=w=500\,J,\,\,\Delta U=0\]
  done clear
  B)
   \[q=\Delta U=500\,J,w=0\]
  done clear
  C)
   \[q=W=500\,J,\Delta U=0\]
  done clear
  D)
   \[\Delta U=0,\,\,q=W=-500\,J\]
  done clear
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• question_answer52) For the reaction, \[2{{N}_{2}}{{O}_{5}}\to 4N{{O}_{2}}+{{O}_{2}}\] rate and rate constant are \[1.02\times {{10}^{-4}}\] and\[3.4\times {{10}^{-5}}{{s}^{-1}}\] respectively, then concentration of \[{{N}_{2}}{{O}_{5}}\] at that time will be
  A)
   1.732
  done clear
  B)
   3
  done clear
  C)
   \[1.02\times {{10}^{-4}}\]
  done clear
  D)
   \[3.4\times {{10}^{5}}\]
  done clear
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• question_answer53) A human body required the 0.01 M activity of radioactive substance after 24 h. Half-life of radioactive substanu is 6 h. Then injection of maximum activity of radioactive substance that can be injected
  A)
   0.08           
  done clear
  B)
   0.04
  done clear
  C)
   0.16        
  done clear
  D)
   0.32
  done clear
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• question_answer54) Molarity of liquid \[HCl\] if density of solution is 1.17 g/cc
  A)
   36.5           
  done clear
  B)
   18.25
  done clear
  C)
   32.05          
  done clear
  D)
   42.10
  done clear
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• question_answer55) Which one of the following is not paramagnetic?
  A)
   NO
  done clear
  B)
   \[N_{2}^{+}\]
  done clear
  C)
   CO
  done clear
  D)
   \[O_{2}^{-}\]
  done clear
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• question_answer56) Among the following ions the \[p\pi -d\pi \] overlap could be present in
  A)
   \[NO_{2}^{-}\]
  done clear
  B)
   \[NO_{3}^{-}\]
  done clear
  C)
   \[PO_{4}^{3-}\]
  done clear
  D)
   \[CO_{3}^{2-}\]
  done clear
  View Answer play_arrow

• question_answer57) A compound formed by elements A and B crystallises in the cubic structure where A atoms are at the corners of a cube and B atoms are at the face centres. The formula of the compound is
  A)
   \[{{A}_{2}}{{B}_{2}}\]
  done clear
  B)
   \[A{{B}_{3}}\]
  done clear
  C)
   AB           
  done clear
  D)
   \[{{A}_{3}}B\]
  done clear
  View Answer play_arrow

• question_answer58) Assuming fully decomposed, the volume of\[C{{O}_{2}}\] released at STP on heating 9.85 g of \[BaC{{O}_{3}}\] (atomic mass, Ba = 137) will be
  A)
   1.12L        
  done clear
  B)
   0.84 L
  done clear
  C)
   2.24 L        
  done clear
  D)
   4.06 L
  done clear
  View Answer play_arrow

• question_answer59) The correct structure of \[Fe{{(CO)}_{5}}\] is
  A)
   trigonal bipyramidal
  done clear
  B)
   octahedral
  done clear
  C)
   tetrahedral
  done clear
  D)
   square pyramidal
  done clear
  View Answer play_arrow

• question_answer60) Which one of the following forms a colourless solution in aqueous medium? (Atomic number\[Sc=21,\,\,Ti=22,\,V=23,Cr=24\])
  A)
   \[{{V}^{3+}}\]
  done clear
  B)
   \[C{{r}^{3+}}\]
  done clear
  C)
   \[T{{i}^{3+}}\]
  done clear
  D)
   \[S{{c}^{3+}}\]
  done clear
  View Answer play_arrow

• question_answer61) \[_{92}{{U}^{235}}\] nucleus absorbs a neutron and disintegrate in \[_{54}X{{e}^{139}},\,{{\,}_{38}}S{{r}^{94}}\] and X so, what will be product X?
  A)
   3-neutrons     
  done clear
  B)
   2-neutrons
  done clear
  C)
   \[\alpha \]-particle      
  done clear
  D)
   \[\beta \]-particle
  done clear
  View Answer play_arrow

• question_answer62) In hydrogen atom, energy of first excited state is -3.4 eV. Then KE of same orbit of hydrogen atom
  A)
   + 3.4 eV       
  done clear
  B)
   + 6.8 eV
  done clear
  C)
   - 13.6eV      
  done clear
  D)
   + 13.6 eV
  done clear
  View Answer play_arrow

• question_answer63) Reaction, \[Ba{{O}_{2}}(s)BaO(s)+{{O}_{2}}(g);\,\Delta H=+ve\]. In equilibrium condition, pressure of \[{{O}_{2}}\]depends on
  A)
   increased mass of \[Ba{{O}_{2}}\]
  done clear
  B)
   increased mass of BaO
  done clear
  C)
   increased temperature of equilibrium
  done clear
  D)
   increased mass of \[Ba{{O}_{2}}\] and BaO both
  done clear
  View Answer play_arrow

• question_answer64) Solution of \[0.1\,N\,N{{H}_{4}}OH\] and \[0.1\,N\,N{{H}_{4}}Cl\] has \[pH\,9.25\], then find out \[p{{K}_{b}}\] of \[N{{H}_{4}}OH\].
  A)
   9.25          
  done clear
  B)
   4.75
  done clear
  C)
   3.75          
  done clear
  D)
   8.25
  done clear
  View Answer play_arrow

• question_answer65) van der Waals real gas, acts as an ideal gas at which condition?
  A)
   High temperature, low pressure
  done clear
  B)
   Low temperature, high pressure
  done clear
  C)
   High temperature, high pressure
  done clear
  D)
   Low temperature, low pressure
  done clear
  View Answer play_arrow

• question_answer66) Unit of entropy is
  A)
   \[J{{K}^{-1}}mo{{l}^{-1}}\]     
  done clear
  B)
   \[J\,\,mo{{l}^{-1}}\]
  done clear
  C)
   \[{{J}^{-1}}{{K}^{-1}}mo{{l}^{-1}}\]
  done clear
  D)
   \[JK\,\,mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer67) \[3A\xrightarrow{{}}B+C\] It would be a zero order reaction when
  A)
   the rate of reaction is proportional to square of concentration of A
  done clear
  B)
   the rate of reaction remains the same at any concentration of A
  done clear
  C)
   the rate remains unchanged at any concentration of B and C
  done clear
  D)
   the rate of reaction doubles if concentration of B is increased to double
  done clear
  View Answer play_arrow

• question_answer68) In electrolysis of \[NaCl\] when Pt electrode is taken then \[{{H}_{2}}\] is liberated at cathode while with Hg cathode it forms sodium amalgam because
  A)
   Hg is more inert than Pt
  done clear
  B)
   more voltage is required to reduce H+ at Hg than at Pt
  done clear
  C)
   Na is dissolved in Hg while it does not dissolved in Pt
  done clear
  D)
   concentration of \[{{H}^{+}}\] ions is larger when Pt electrode is taken
  done clear
  View Answer play_arrow

• question_answer69) Which of the following statement is true?
  A)
   Silicon exhibits 4 coordination number in its compounds
  done clear
  B)
   Bond energy of \[{{F}_{2}}\] is less than \[C{{l}_{2}}\]
  done clear
  C)
   Mn(III) oxidation state is more stable than Mn(II) in aqueous state
  done clear
  D)
   Elements of 15th group shows only +3 and +5 oxidation states
  done clear
  View Answer play_arrow

• question_answer70) An atom has electronic configuration\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{3}},4{{s}^{2}}\]. You will place it in
  A)
   fifth group     
  done clear
  B)
   fifteenth group
  done clear
  C)
   second group   
  done clear
  D)
   third group
  done clear
  View Answer play_arrow

• question_answer71) The hypothetical complex chloro diaquatriammine cobalt (III) chloride can be represented as
  A)
   \[[CoCl{{(N{{H}_{3}})}_{3}}{{({{H}_{2}}O)}_{2}}]C{{l}_{2}}\]
  done clear
  B)
   \[[Co{{(N{{H}_{3}})}_{3}}({{H}_{2}}O)C{{l}_{3}}]\]
  done clear
  C)
   \[[Co{{(N{{H}_{3}})}_{3}}{{({{H}_{2}}O)}_{2}}Cl]\]
  done clear
  D)
   \[[Co{{(N{{H}_{3}})}_{3}}{{({{H}_{2}}O)}_{3}}]C{{l}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer72) In the silver plating of copper, \[K[Ag{{(CN)}_{2}}]\] is used instead of \[AgN{{O}_{3}}\]. The reason is
  A)
   a thin layer of Ag is formed on Cu
  done clear
  B)
   more voltage is required
  done clear
  C)
   \[A{{g}^{+}}\] ions are completely removed from solution
  done clear
  D)
   less availability of \[A{{g}^{+}}\] ions, as Cu cannot displace Ag from \[[Ag{{(CN)}_{2}}]\] ion
  done clear
  View Answer play_arrow

• question_answer73) \[CuS{{O}_{4}}\] when reacts with KCN forms CuCN which is insoluble in water. It is soluble in excess of KCN due to the formation of the following complex
  A)
   \[{{K}_{2}}[Cu{{(CN)}_{4}}]\]
  done clear
  B)
   \[{{K}_{3}}[Cu{{(CN)}_{4}}]\]
  done clear
  C)
   \[CuC{{N}_{2}}\]
  done clear
  D)
   \[Cu\,[K\,Cu{{(CN)}_{4}}]\]
  done clear
  View Answer play_arrow

• question_answer74) Zn gives \[{{H}_{2}}\] gas with \[{{H}_{2}}S{{O}_{4}}\] and \[HCl\] but not with \[HN{{O}_{3}}\]
  A)
   Zn act as oxidising agent when react with \[HN{{O}_{3}}\]
  done clear
  B)
   \[HN{{O}_{3}}\] is weaker acid than \[{{H}_{2}}S{{O}_{4}}\] and \[HCl\]
  done clear
  C)
   in electrochemical series Zn is above hydrogen
  done clear
  D)
   \[NO_{3}^{-}\] is reduced in preference to hydronium ion
  done clear
  View Answer play_arrow

• question_answer75) IUPAC name of the following is \[C{{H}_{2}}=CH-C{{H}_{2}}-C{{H}_{2}}-C\equiv CH\]
  A)
   1, 5-hexenyne  
  done clear
  B)
   l-hexene-5-yne
  done clear
  C)
   1-hexyne-5-ene
  done clear
  D)
   1, 5-hexynene
  done clear
  View Answer play_arrow

• question_answer76)  Product P in the above reaction is
  A)
    
  done clear
  B)
   
  done clear
  C)
    
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer77) n-propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent?
  A)
   PCIs
  done clear
  B)
   Reduction.
  done clear
  C)
   Oxidation with potassium dichromate
  done clear
  D)
   Ozonolysis
  done clear
  View Answer play_arrow

• question_answer78) In the following reaction, product P is \[R-\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{C}}\,-Cl\xrightarrow[Pd-BaS{{O}_{4}}]{{{H}_{2}}}P\]
  A)
   \[RC{{H}_{2}}OH\]
  done clear
  B)
   RCOOH
  done clear
  C)
   RCHO       
  done clear
  D)
   \[RC{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer79) Enzymes are made up of
  A)
   edible proteins
  done clear
  B)
   proteins with specific structure
  done clear
  C)
   nitrogen containing carbohydrates
  done clear
  D)
   carbohydrates
  done clear
  View Answer play_arrow

• question_answer80) Geometrical isomers differ in
  A)
   position of functional group
  done clear
  B)
   position of atoms
  done clear
  C)
   spatial arrangement of atoms
  done clear
  D)
   length of carbon chain
  done clear
  View Answer play_arrow

• question_answer81) Monomer of \[{{\left[ -\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{2}}- \right]}_{n}}\] is
  A)
   2-methylpropene
  done clear
  B)
   styrene
  done clear
  C)
   propylene
  done clear
  D)
   ethane
  done clear
  View Answer play_arrow

• question_answer82) Which one of the following will have largest number of atoms?
  A)
   1 g Au
  done clear
  B)
   1 g Na
  done clear
  C)
   1 g Li
  done clear
  D)
   \[1\,g\,C{{l}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer83) The size of isoelectronic species ; \[{{F}^{-}},Ne,\,N{{a}^{+}}\] is affected by
  A)
   nuclear charge (Z)
  done clear
  B)
   valence principal quantum number (n)
  done clear
  C)
   electron-electron interaction in the outer orbitals
  done clear
  D)
   None of the factors because their size is the same
  done clear
  View Answer play_arrow

• question_answer84) \[\Delta {{U}^{o}}\] of combustion of methane is\[-X\,k\,J\,mo{{l}^{-1}}\]. The value of \[\Delta {{H}^{o}}\] is
  A)
   \[=\Delta {{U}^{o}}\]
  done clear
  B)
   \[>\Delta {{U}^{o}}\]
  done clear
  C)
   \[<\Delta {{U}^{o}}\]
  done clear
  D)
   = 0
  done clear
  View Answer play_arrow

• question_answer85) In the sample of soft drink, the concentration of \[{{H}^{+}}\] ion is \[3.8\times {{10}^{-3}}M\]. Its pH is
  A)
   2               
  done clear
  B)
   2.42
  done clear
  C)
   3               
  done clear
  D)
   3.42
  done clear
  View Answer play_arrow

• question_answer86) Which one of the following alkali metals gives hydrated salts?
  A)
   Li   
  done clear
  B)
   Na   
  done clear
  C)
   K  
  done clear
  D)
   Cs
  done clear
  View Answer play_arrow

• question_answer87) Boric acid is polymeric due to
  A)
   its acidic nature
  done clear
  B)
   the presence of hydrogen bonds
  done clear
  C)
   its monobasic nature
  done clear
  D)
   its geometry
  done clear
  View Answer play_arrow

• question_answer88) Which one of the following carbocation is most stable?
  A)
   \[{{(C{{H}_{3}})}_{3}}C\overset{+}{\mathop{C}}\,{{H}_{2}}\]
  done clear
  B)
   \[{{(C{{H}_{3}})}_{3}}\overset{+}{\mathop{C}}\,\]
  done clear
  C)
   \[C{{H}_{3}}C{{H}_{2}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]
  done clear
  D)
   \[C{{H}_{3}}\overset{+}{\mathop{C}}\,HC{{H}_{2}}C{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer89) The best and latest technique for isolation, purification and separation of organic compounds is
  A)
   crystallisation
  done clear
  B)
   distillation
  done clear
  C)
   sublimation
  done clear
  D)
   chromatography
  done clear
  View Answer play_arrow

• question_answer90) Which one of the following vitamins is water soluble?
  A)
   Vitamin B      
  done clear
  B)
   Vitamin E
  done clear
  C)
   Vitamin K      
  done clear
  D)
   Vitamin A
  done clear
  View Answer play_arrow

• question_answer91) Which one of the following on reduction with lithium aluminium hydride yield a secondary amine?
  A)
   Nitroethane
  done clear
  B)
   Methyl isocyanide
  done clear
  C)
   Acetamide
  done clear
  D)
   Methyl cyanide
  done clear
  View Answer play_arrow

• question_answer92) Which one of the following ionic species has the greatest proton affinity to form stable compound?
  A)
   \[H{{S}^{-}}\]
  done clear
  B)
   \[NH_{2}^{-}\]
  done clear
  C)
   \[{{F}^{-}}\]           
  done clear
  D)
   \[{{I}^{-}}\]
  done clear
  View Answer play_arrow

• question_answer93) The reaction, \[C{{H}_{3}}-\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}-O-C{{H}_{2}}C{{H}_{3}}\] \[+HI\xrightarrow{\Delta }\]? Which of the following compound will be formed?
  A)
   \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}-I+C{{H}_{3}}C{{H}_{2}}OH\]
  done clear
  B)
   \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{3}}+C{{H}_{3}}C{{H}_{2}}OH\]
  done clear
  C)
   \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}OH+C{{H}_{3}}C{{H}_{3}}\]
  done clear
  D)
   \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}OH+C{{H}_{3}}C{{H}_{2}}I\]
  done clear
  View Answer play_arrow

• question_answer94) Predict the product C obtained in the following reaction of butyne -1. \[C{{H}_{3}}C{{H}_{2}}-C\equiv CH+HCl\xrightarrow{{}}B\xrightarrow{HI}C\]
  A)
   \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}-C{{H}_{2}}I\]
  done clear
  B)
   \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}-\overset{\begin{smallmatrix}  I \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\mathop{C}}\,}}\,-H\]
  done clear
  C)
   \[C{{H}_{3}}C{{H}_{2}}CH-\overset{\begin{smallmatrix}  I \\  | \end{smallmatrix}}{\mathop{C}}\,{{H}_{2}}Cl\]
  done clear
  D)
   \[C{{H}_{3}}C{{H}_{2}}-\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix}  I \\  | \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{3}}\] 
  done clear
  View Answer play_arrow

• question_answer95) Sulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching?
  A)
   Argentite       
  done clear
  B)
   Galena
  done clear
  C)
   Copper pyrite  
  done clear
  D)
   Sphalerite
  done clear
  View Answer play_arrow

• question_answer96) The equilibrium constant of the reaction; \[Cu(s)+2A{{g}^{+}}(aq)\xrightarrow{{}}C{{u}^{2+}}(aq)+2Ag(s)\]\[{{E}^{o}}=0.46\,V\]at 298 K
  A)
   \[2.4\times {{10}^{10}}\]
  done clear
  B)
   \[2.0\times {{10}^{10}}\]
  done clear
  C)
   \[4.0\times {{10}^{10}}\]
  done clear
  D)
   \[4.0\times {{10}^{15}}\]
  done clear
  View Answer play_arrow

• question_answer97) In the preparation of alkene from alcohol using \[A{{l}_{2}}{{O}_{3}}\] which is effective factor?
  A)
   Porosity of \[A{{l}_{2}}{{O}_{3}}\]
  done clear
  B)
   Temperature
  done clear
  C)
   Concentration
  done clear
  D)
   Surface area of Al 20 3
  done clear
  View Answer play_arrow

• question_answer98) Which one of the following is correct?
  A)
   On reduction any aldehyde gives secondary alcohol
  done clear
  B)
   Reaction of vegetable oil with \[{{H}_{2}}S{{O}_{4}}\] gives glycerine
  done clear
  C)
   Alcoholic iodine with \[NaOH\] gives iodoform
  done clear
  D)
   Sucrose on reaction with \[NaCl\] gives invert sugar
  done clear
  View Answer play_arrow

• question_answer99) Which one of the following is correct about H-bonding in nucleofide?
  A)
   A-T,G-C       
  done clear
  B)
   A-G, T-C
  done clear
  C)
   G-T/A-C      
  done clear
  D)
   A-A, T-T
  done clear
  View Answer play_arrow

• question_answer100) Change in enthalpy for the reaction, \[2{{H}_{2}}{{O}_{2}}(l)\xrightarrow{{}}2{{H}_{2}}O(l)+{{O}_{2}}(g)\] if heat of formation of \[{{H}_{2}}{{O}_{2}}(l)\] and \[{{H}_{2}}O(l)\]are - 188 and -286 kJ/mol respectively is
  A)
   -196 kJ/mol
  done clear
  B)
   +196 kJ/mol
  done clear
  C)
   +948 kJ/mol  
  done clear
  D)
   -948 kJ/mol
  done clear
  View Answer play_arrow

• question_answer101) The biological definition of a species depends on
  A)
   the geographical distribution of two groups of organisms
  done clear
  B)
   reproductive isolation of two groups of organisms
  done clear
  C)
   anatomical and development differences between the two groups of organisms
  done clear
  D)
   difference in the adoptation of two groups of organisms
  done clear
  View Answer play_arrow

• question_answer102) Binomial nomenclature of plants was given by
  A)
   Engler         
  done clear
  B)
   Linnaeus
  done clear
  C)
   Prantl         
  done clear
  D)
   Both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer103) Which of the following is not characteristic of Gram positive bacteria?
  A)
   Cell wall is smooth
  done clear
  B)
   Mesosomes are distinctive prominent
  done clear
  C)
   Basal body of flagellum contains two rings
  done clear
  D)
   Murein content of cell wall is 70-80%.
  done clear
  View Answer play_arrow

• question_answer104) During conjugation in Paramecium
  A)
   out of the four micronuclei formed, three degenerate
  done clear
  B)
   out of six macronuclei formed, four degenerate
  done clear
  C)
   zygote nucleus undergoes eight successive division in each conjugant
  done clear
  D)
   out of 16 nuclei; only four degenerate
  done clear
  View Answer play_arrow

• question_answer105) Which one of the following viruses contains both DNA and RNA?
  A)
   Cyanophage    
  done clear
  B)
   Herpes virus
  done clear
  C)
   Leuko virus    
  done clear
  D)
   Polio virus
  done clear
  View Answer play_arrow

• question_answer106) Oil is reserve food in
  A)
   Chlamydomonas
  done clear
  B)
   Oedogonium
  done clear
  C)
   Vaucheria      
  done clear
  D)
   Chara
  done clear
  View Answer play_arrow

• question_answer107) In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result
  A)
   there is no change in success rate of fertilization
  done clear
  B)
   there is high degree of sterility
  done clear
  C)
   one can conclude that the plant is apomictic
  done clear
  D)
   self-fertilization is prevented
  done clear
  View Answer play_arrow

• question_answer108) In Pinus, male cone bears a large number of
  A)
   ligules
  done clear
  B)
   anthers
  done clear
  C)
   microsporophylls
  done clear
  D)
   megasporophylls
  done clear
  View Answer play_arrow

• question_answer109) The canal system is characteristic feature of
  A)
   helminthes     
  done clear
  B)
   coelenterates
  done clear
  C)
   sponges        
  done clear
  D)
   echinoderms
  done clear
  View Answer play_arrow

• question_answer110) The excretory cells,-that are found in Platyhelminthes are
  A)
   protonephridia
  done clear
  B)
   flame cells
  done clear
  C)
   solenocytes
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer111) The pseudocoelomate among these is
  A)
   Porifera       
  done clear
  B)
   Annelida
  done clear
  C)
   Aschelminthes
  done clear
  D)
   Mollusca
  done clear
  View Answer play_arrow

• question_answer112) Radula is found in
  A)
   Pila sp         
  done clear
  B)
   Chiton sp
  done clear
  C)
   Lamellidens sp  
  done clear
  D)
   Pinctada sp
  done clear
  View Answer play_arrow

• question_answer113) In a plant, the peduncle is elongated and it bears pedicillate flowers. The older flowerslie towards the base and the younger ones near the apex. The growth of the peduncle continues and more flowers are added. The inflorescence is
  A)
   raceme      
  done clear
  B)
   corymb
  done clear
  C)
   umbel   
  done clear
  D)
   head
  done clear
  View Answer play_arrow

• question_answer114) Which of these is an example for zygomorhic   flower with imbricate aestivation?
  A)
   Calotropis      
  done clear
  B)
   Mustard
  done clear
  C)
   Canna         
  done clear
  D)
   Cassia
  done clear
  View Answer play_arrow

• question_answer115) Maize grain is
  A)
   seed           
  done clear
  B)
   embryo
  done clear
  C)
   ovule          
  done clear
  D)
   fruit
  done clear
  View Answer play_arrow

• question_answer116) At maturity, the sieve plates become impregnated with
  A)
   cellulose       
  done clear
  B)
   pectin
  done clear
  C)
   suberin        
  done clear
  D)
   callose
  done clear
  View Answer play_arrow

• question_answer117) Duramen is present in
  A)
   inner region of secondary wood
  done clear
  B)
   part of sapwood
  done clear
  C)
   outer region of secondary wood
  done clear
  D)
   region of pericycle
  done clear
  View Answer play_arrow

• question_answer118) The type of epithelial cells, which line the Inner surface of fallopian tubes, bronchioles and small bronchi are known as
  A)
   squamous epithelium
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  B)
   columnar epithelium
  done clear
  C)
   ciliated epithelium
  done clear
  D)
   cubical epithelium
  done clear
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• question_answer119) Largest single mass of lymphatic tissue in the body is
  A)
   lung           
  done clear
  B)
   spleen
  done clear
  C)
   liver            
  done clear
  D)
   kidney
  done clear
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• question_answer120) The plasmamembrane consists mainly of
  A)
   phospholipids embedded in a protein bilayer
  done clear
  B)
   proteins embedded in a phospholipid bilayer
  done clear
  C)
   proteins embedded in a polymer of glucose molecules
  done clear
  D)
   proteins embedded in a carbohydrate bilayer
  done clear
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• question_answer121) Fluidity of bio-membranes can be shown by
  A)
   electron microscope
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  B)
   tissue culture
  done clear
  C)
   phase-contrast microscope
  done clear
  D)
   fluorescence microscope
  done clear
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• question_answer122) Synaptonemal complex is formed during
  A)
   pachytene     
  done clear
  B)
   zygotene
  done clear
  C)
   leptotene      
  done clear
  D)
   diplotene
  done clear
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• question_answer123) Ascent of sap in plants was demonstrated by
  A)
   Girdling experiment
  done clear
  B)
   Ganongs experiment
  done clear
  C)
   Went experiment
  done clear
  D)
   Lever auxanometer
  done clear
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• question_answer124) Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing microorganism?
  A)
   Casuarina equisetifolia
  done clear
  B)
   Crotalariajuncea
  done clear
  C)
   Cycasrevoluta
  done clear
  D)
   Cicer arietinum
  done clear
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• question_answer125) Choose the correct statement.
  A)
   The \[{{C}_{4}}\]-plants do not have RUBISCO
  done clear
  B)
   Carboxylation of RuBP leads to the formation of PGA and phosphoglycolate
  done clear
  C)
   Carboxylation of phosphoenol pyruvate results in the formation of \[{{C}_{4}}\]-acids
  done clear
  D)
   Decarboxylation of \[{{C}_{4}}\]-acids occur in the mesophyll cells
  done clear
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• question_answer126) Which one is not correct about Krebs cycle?
  A)
   It is also called citric acid cycle
  done clear
  B)
  The intermediate compound, which links glycolysis with Krebs cycle is malic acid
  done clear
  C)
   It occurs in mitochondria
  done clear
  D)
   It starts with six carbon compound
  done clear
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• question_answer127) Response of plants due to reversible turgor change in pulvinus is
  A)
   nyctinastic     
  done clear
  B)
   seismonastic
  done clear
  C)
   heptonastic    
  done clear
  D)
   photonastic
  done clear
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• question_answer128) The bioassay of auxin is
  A)
   Avena curvature test
  done clear
  B)
   callus formation
  done clear
  C)
   culture of fungus
  done clear
  D)
   seed dormancy
  done clear
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• question_answer129) In intestine, food materials are absorbed through
  A)
   villi
  done clear
  B)
   sub-tentacular cells
  done clear
  C)
   sub-mucosa
  done clear
  D)
   gastric glands
  done clear
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• question_answer130) The essential vitamin for blood coagulation is
  A)
   vitamin-\[{{B}_{6}}\]     
  done clear
  B)
   vitamin-A
  done clear
  C)
   vitamin-K      
  done clear
  D)
   vitamin-E
  done clear
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• question_answer131) Severe Acute Respiratory Syndrome (SARS)
  A)
   is caused by a variant of Pneumococcus pneumoniae
  done clear
  B)
   is caused by a variant of the common cold virus (corona virus)
  done clear
  C)
   is an acute form of asthma
  done clear
  D)
   affects non-vegetarians much faster than vegetarians
  done clear
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• question_answer132) Maximum amount of oxygen is lost from the blood in the
  A)
   capillaries surrounding the tissue cells
  done clear
  B)
   arteries of the .body
  done clear
  C)
   capillaries surrounding the alveoli
  done clear
  D)
   left auricle of the heart
  done clear
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• question_answer133) A person who is on a long hunger strike and is surviving only on water, will have
  A)
   more sodium in his urine
  done clear
  B)
   less amino acids in his urine
  done clear
  C)
   more glucose in his blood
  done clear
  D)
   less urea in his urine
  done clear
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• question_answer134) Bones become fragile in
  A)
   osteoporosis   
  done clear
  B)
   gout
  done clear
  C)
   arthritis
  done clear
  D)
   None of these
  done clear
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• question_answer135) Injury to vagus nerve in human is not likely to affect
  A)
   tongue movements
  done clear
  B)
   gastrointestinal movements
  done clear
  C)
   pancreatic secretion
  done clear
  D)
   cardiac movements
  done clear
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• question_answer136) Congenital removal of thyroid will cause
  A)
   myxoedema
  done clear
  B)
   cretinism
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   exophthalmic goiter
  done clear
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• question_answer137) Which of the following hormones is not a secretory product of human placenta?
  A)
   Human chorionic gonadotropin
  done clear
  B)
   Prolactin
  done clear
  C)
   Oestrogen
  done clear
  D)
   Progesterone
  done clear
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• question_answer138) What does the filiform apparatus do at the entrance into ovule?
  A)
   It helps in the entry of pollen tube into a synergid
  done clear
  B)
   It prevents entry of more than one pollen tube into the embryo sac
  done clear
  C)
   It brings about opening of the pollen tube
  done clear
  D)
   It guides pollen tube from a synergid to egg
  done clear
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• question_answer139) Graafian follicle contains
  A)
   oogonial cells
  done clear
  B)
   corpus luteum
  done clear
  C)
   theca externa and theca interna
  done clear
  D)
   corpus albicans
  done clear
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• question_answer140) Which one of the following statements about morula in humans is correct?
  A)
   It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA
  done clear
  B)
   It has far less cytoplasm as well as less DNA than in an uncleaved zygote
  done clear
  C)
   It has more or less equal quantity of cytoplasm and DNA as in uncleaved zygote
  done clear
  D)
   lt has more cytoplasm and more DNA than an uncleaved zygote
  done clear
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• question_answer141) Incomplete dominance is shown by
  A)
   primrose      
  done clear
  B)
   Mirabilis
  done clear
  C)
   Helianthus     
  done clear
  D)
   China rose
  done clear
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• question_answer142) During translation initiation in prokaryotes, a GTP molecule is needed in
  A)
   association of 30 S, mRNA with formyl-met-tRNA
  done clear
  B)
   association of 50 S sub-unit of ribosome with initiation complex
  done clear
  C)
   formation of formyl-met-tRNA
  done clear
  D)
   binding of 30 sub-units of ribosome with mRNA
  done clear
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• question_answer143) Thorns of Baugainvillea and tendrils of Cucurbita are examples of
  A)
   analogous organs
  done clear
  B)
   homologous organs
  done clear
  C)
   vestigial organs
  done clear
  D)
   retrogressive evolution
  done clear
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• question_answer144) A good example for organic fertilizer, which improves phosphorus uptake, is
  A)
   VAM fungi     
  done clear
  B)
   Rhizobium
  done clear
  C)
   Azospirillum
  done clear
  D)
   None of these
  done clear
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• question_answer145) What is a keystone species?
  A)
   A species which adds up to only a small proportion of the total biomass of a community, yet has a huge impact on the communitys  organization and survival
  done clear
  B)
   A common species that has plenty of biomass, yet has a fairly low impact on the communitys organization
  done clear
  C)
   A rare species that has minimal impact on the biomass and on other species in the community
  done clear
  D)
   A dominant species that constitutes a large proportion of the biomass and which affects many other species
  done clear
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• question_answer146) The 10% energy transfer law of food chain was given by
  A)
   Lederberg     
  done clear
  B)
   Lindemann
  done clear
  C)
   Weismann     
  done clear
  D)
   Lindley
  done clear
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• question_answer147) Soil formed after leaching and rich in Al and Fe is
  A)
   alluvial         
  done clear
  B)
   podsol
  done clear
  C)
   laterite         
  done clear
  D)
   None of these
  done clear
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• question_answer148) Chipko movement is related to
  A)
   Swaminathan  
  done clear
  B)
   Bahuguna
  done clear
  C)
   Odum        
  done clear
  D)
   Misra
  done clear
  View Answer play_arrow

• question_answer149) Ozone layer is being destroyed by
  A)
   \[S{{O}_{2}}\]
  done clear
  B)
   \[N{{O}_{2}}\]
  done clear
  C)
   CFCs
  done clear
  D)
   photochemical smog
  done clear
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• question_answer150) The protein products of the following Bt toxin genes cry I Ac and cry II Ab are responsible for controlling
  A)
   Bollworm 
  done clear
  B)
  roundworm
  done clear
  C)
  Moth
  done clear
  D)
   fruit fly
  done clear
  View Answer play_arrow