Solved papers for BCECE Medical BCECE Medical Solved Papers-2006

done BCECE Medical Solved Papers-2006 Total Questions - 150

• question_answer1) The length of a simple pendulum is about 100cm known to an accuracy of 1mm. Its period of oscillation is 2s determined by measuring the time for 100 oscillations using a clock of 0.1 s resolution. What is the accuracy in the determined value of g?
  A)
   0.2%          
  done clear
  B)
   0.5%
  done clear
  C)
   0.1%
  done clear
  D)
   2%
  done clear
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• question_answer2) Youngs modulus of the material of a wire is V. Oh pulling the wire by a force F, the increase in its length is \[x\]. The potential energy of the stretched wire is :
  A)
   \[\frac{1}{2}Fx\]         
  done clear
  B)
   \[\frac{1}{2}Yx\]
  done clear
  C)
   \[\frac{1}{2}F{{x}^{2}}\]
  done clear
  D)
   none of these
  done clear
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• question_answer3) A charge situated at a certain distance along the axis of an electric dipole experiences a force F. If the distance of the charge from the dipole is doubled, the force acting on it will become :
  A)
   \[2\,F\]
  done clear
  B)
   \[\frac{F}{2}\]
  done clear
  C)
   \[\frac{F}{4}\]
  done clear
  D)
   \[\frac{F}{8}\]
  done clear
  View Answer play_arrow

• question_answer4) Which of the following plots represents the variation of the electric field with distance from the centre of a uniformly charged non- conducting sphere of radius R?
  A)
    
  done clear
  B)
   
  done clear
  C)
   
  done clear
  D)
   
  done clear
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• question_answer5) A certain electrical conductor has a square cross-section, 2.0 mm on side, and is 12 m long. The resistance between its ends is 0.072 \[\Omega \]. The resistivity of its material is equal to :
  A)
   \[2.4\times {{10}^{-6}}\Omega \,m\]
  done clear
  B)
   \[1.2\times {{10}^{-6}}\Omega \,m\]
  done clear
  C)
   \[1.2\times {{10}^{-8}}\Omega \,m\]
  done clear
  D)
   \[2.4\times {{10}^{-8}}\Omega \,m\]
  done clear
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• question_answer6) Figure shows three points A, B and C in a region of uniform electric field \[\vec{E}\]. The line AB is perpendicular and BC is parallel to the field lines. Then which of the following holds good?
  A)
  \[{{V}_{A}}={{V}_{B}}={{V}_{C}}\]
  done clear
  B)
  \[{{V}_{A}}={{V}_{B}}>{{V}_{C}}\]
  done clear
  C)
  \[{{V}_{A}}={{V}_{B}}<{{V}_{C}}\]
  done clear
  D)
  \[{{V}_{A}}>{{V}_{B}}={{V}_{C}}\]
  done clear
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• question_answer7) The \[(x,y,z)\] coordinates of two points A and B are given respectively as (0,3,-1) and (-2, 6, 4). The displacement vector form A to B may be given by-:
  A)
   \[-2\hat{i}+6\hat{j}+4\,\hat{k}\]
  done clear
  B)
   \[-2\hat{i}+3\hat{j}+3\,\hat{k}\]
  done clear
  C)
   \[-2\hat{i}+3\hat{j}+5\,\hat{k}\]
  done clear
  D)
   \[2\hat{i}-3\hat{j}-5\,\hat{k}\]
  done clear
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• question_answer8) In the first second of its flight, rocket ejects 1/60 of its mass with a velocity of 2400 \[m{{s}^{-1}}\]The acceleration of the rocket is :
  A)
   19.6 \[m{{s}^{-2}}\]      
  done clear
  B)
   30.2 \[m{{s}^{-2}}\]
  done clear
  C)
   40 \[m{{s}^{-2}}\]        
  done clear
  D)
   49.8 \[m{{s}^{-2}}\]
  done clear
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• question_answer9) In the given figure the pulley is assumed massless and frictionless. If the friction force on the object of mass m is \[f\], then its acceleration in terms of the force F will be equal to:
  A)
   \[(F-f)/m\]
  done clear
  B)
   \[\left( \frac{f}{2}-f \right)/m\]
  done clear
  C)
   F/m          
  done clear
  D)
   none of these
  done clear
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• question_answer10) The equivalent resistance between the points P and Q in the network shown in the figure is given by:
  A)
   2.5\[\Omega \]           
  done clear
  B)
   7.5\[\Omega \]
  done clear
  C)
   10 \[\Omega \]            
  done clear
  D)
   12.5 \[\Omega \]
  done clear
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• question_answer11) The magnetic field amplitude of an electromagnetic wave is \[2\times {{10}^{-7}}\] T. Its electric field amplitude, if the wave is travelling in free space is:
  A)
   6 \[V{{m}^{-1}}\]      
  done clear
  B)
   60 \[V{{m}^{-1}}\]
  done clear
  C)
   \[\frac{1}{6}\,\,V{{m}^{-1}}\]
  done clear
  D)
   none of these
  done clear
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• question_answer12) A cart is moving horizontally along a straight line with constant speed 30 m/s. A projectile is to be fired from the moving cart in such a way that it will return to the cart after the cart has moved 80 m. At what speed (relative to the cart) must the projectile be fired? (Take \[g=10\,\,m/{{s}^{2}}\])
  A)
   10 m/s        
  done clear
  B)
   \[10\sqrt{8}\] m/s
  done clear
  C)
   \[\frac{40}{3}\]m/s        
  done clear
  D)
   None of these
  done clear
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• question_answer13) A boy begins to walk eastward along a street infront of his house, and the graph of his displacement from home is shown in the following figure. His average velocity for the whole time interval is equal to:
  A)
   8 m/min      
  done clear
  B)
   6 m/min
  done clear
  C)
   \[\frac{8}{3}\] m/min      
  done clear
  D)
   2 m/min
  done clear
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• question_answer14) What is the potential drop between points A and C in the following circuit? Resistances 1\[\Omega \] and 2\[\Omega \] represent the internal resistances of the respective cells.
  A)
   1.75 V          
  done clear
  B)
   2.25 V
  done clear
  C)
   \[\frac{5}{4}\]v             
  done clear
  D)
   \[\frac{4}{5}\]v
  done clear
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• question_answer15) The escape velocity of a projectile on the earths surface is 11.2 \[km{{s}^{-1}}\]. A body is projected out with thrice this speed. The speed of the body far away from the earth will be :
  A)
   22.4 \[km{{s}^{-1}}\]     
  done clear
  B)
   31.7 \[km{{s}^{-1}}\]
  done clear
  C)
   33.6 \[km{{s}^{-1}}\]     
  done clear
  D)
   none of these
  done clear
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• question_answer16) A body moves along a circular path of radius 10 m and the coefficient of friction is 0.5. What should be its angular speed in rad/s, if it is not to slip from the surface? \[(g=9.8\,\,m{{s}^{-2}})\]
  A)
   5               
  done clear
  B)
   10
  done clear
  C)
   0.1              
  done clear
  D)
   0.7
  done clear
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• question_answer17) One end of a string of length \[l\] is connected to a particle of mass m and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with speed v, the net force on the particle (directed towards the centre) is :
  A)
   T
  done clear
  B)
   \[T-\frac{m{{v}^{2}}}{l}\]
  done clear
  C)
   \[T+\frac{m{{v}^{2}}}{l}\]
  done clear
  D)
   zero where T is the tension in the string.
  done clear
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• question_answer18) A body is initially at rest. It undergoes one-dimensional motion with constant acceleration. The power delivered to it at time t is proportional to:
  A)
   \[{{t}^{1/2}}\]
  done clear
  B)
   t
  done clear
  C)
   \[{{t}^{3/2}}\]
  done clear
  D)
   \[{{t}^{2}}\]
  done clear
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• question_answer19) In the adjacent figure is shown a closed path P. A long straight conductor carrying a current \[I\]passes through O and perpendicular to the plane of the paper. Then which of the following holds good?
  A)
   \[\int_{p}{{\vec{B}}}\,.\,\,\vec{d}l=0\]
  done clear
  B)
   \[\int_{p}{{\vec{B}}}\,.\,\,\vec{d}l={{\mu }_{0}}I\]
  done clear
  C)
   \[\int_{p}{{\vec{B}}}\,.\,\,\vec{d}l>{{\mu }_{0}}I\]
  done clear
  D)
   None of these
  done clear
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• question_answer20) Two circular, similar, coaxial loops carry equal currents in the same direction. If the loops are brought nearer, what will happen?
  A)
   Current will increase in each loop
  done clear
  B)
   Current will decrease in each loop
  done clear
  C)
   Current will remain same in each loop
  done clear
  D)
   Current will increase in one and decrease in the other
  done clear
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• question_answer21) The figure below shows the plot of \[\frac{PV}{nT}\] versus P for oxygen gas at two different temperatures. Read the following statements concerning the above curves: (i) The dotted line corresponds to the ideal gas behaviour. (ii) \[{{T}_{1}}>{{T}_{2}}\] (iii) The value of \[\frac{PV}{nT}\] at the point where the curves meet on the y-axis is the same for all gases. Which of the above statements is true?
  A)
   (i) only        
  done clear
  B)
   (i) and (ii) only
  done clear
  C)
   All of these     
  done clear
  D)
   None of these
  done clear
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• question_answer22) The following figure represents the temperature versus time plot for a given amount of a substance when heat energy is supplied to it at a fixed rate and at a constant pressure. Which parts of the above plot represent a phase change?
  A)
   a to b and e to \[f\]
  done clear
  B)
   btocandctod
  done clear
  C)
   d to e and e to \[f\]
  done clear
  D)
   b to c and d to e
  done clear
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• question_answer23) A bar magnet has a 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 carried by the solenoid should be :
  A)
   8 A              
  done clear
  B)
   6 A
  done clear
  C)
   4.5 A             
  done clear
  D)
   2 A
  done clear
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• question_answer24) In a series LCR circuit the frequency of a 10 V AC voltage source is adjusted in such a fashion that the reactance of the inductor measures 15 Q and that of capacitor 11\[\Omega \]. If R = 3\[\Omega \], the potential difference across the series combination of L and C will be :
  A)
   8V            
  done clear
  B)
   10 V
  done clear
  C)
   22V           
  done clear
  D)
   52V
  done clear
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• question_answer25) A circuit draws 330 W from a 110 V, 60 Hz AC line. The power factor is 0.6 and the current lags the voltage. The capacitance of a series capacitor that will result in a power factor of unity is equal to :
  A)
   31 \[\mu F\]
  done clear
  B)
   54 \[\mu F\]
  done clear
  C)
   151 \[\mu F\]
  done clear
  D)
   201 \[\mu F\]
  done clear
  View Answer play_arrow

• question_answer26) If the focal length of the lens is 20 cm, what is the distance of the image from the lens in the following figure?
  A)
   5.5 cm        
  done clear
  B)
   7.5 cm
  done clear
  C)
   12.0 cm       
  done clear
  D)
   20.0 cm
  done clear
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• question_answer27) An open U-tube contains mercury. When 11.2 cm of water is poured into one of the arms of the tube, how high does the mercury rise in the other arm form its initial level?
  A)
   0.56 cm       
  done clear
  B)
   1.35 cm
  done clear
  C)
   0.41 cm       
  done clear
  D)
   2.32 cm
  done clear
  View Answer play_arrow

• question_answer28) The change in the entropy of a 1 mole of an ideal gas which went through an isothermal process from an initial state \[({{P}_{1}},{{V}_{1}},T)\] to the final state \[({{P}_{2}},{{V}_{2}},T)\] is equal to :
  A)
   zero            
  done clear
  B)
   \[R\ln T\]
  done clear
  C)
   \[R\ln \frac{{{V}_{1}}}{{{V}_{2}}}\]
  done clear
  D)
   \[R\ln \frac{{{V}_{2}}}{{{V}_{1}}}\]
  done clear
  View Answer play_arrow

• question_answer29) An unpolarized beam of light is incident on a glass surface at an angle of incidence equal to the polarizing angle of the glass. Read the following Statements:

  (i) The reflected beam is completely polarized.

  (ii) The refracted beam is partially polarized.

  (iii) The angle between the reflected and the refracted beams is \[{{90}^{o}}\].

  Which of the above statements is/are true?
  A)
   (i) only
  done clear
  B)
   (ri) (ii)only
  done clear
  C)
   (i) and (iii)
  done clear
  D)
   All the statements are correct
  done clear
  View Answer play_arrow

• question_answer30) The threshold frequency for certain metal is\[3.3\times {{10}^{14}}Hz\]. If light of frequency \[8.2\times {{10}^{14}}Hz\]is incident on the metal, the cut-off voltage of the photoelectric current will be:
  A)
   4.9V            
  done clear
  B)
   3.0V
  done clear
  C)
   2.0V            
  done clear
  D)
   1.0 V
  done clear
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• question_answer31) Frequencies higher than 10 MHz were found not being, reflected by the ionosphere on a particular day at a place. The maximum electron density of the ionosphere on the day was near to:
  A)
   \[1.5\times {{10}^{10}}{{m}^{-3}}\]
  done clear
  B)
   \[1.24\times {{10}^{12}}{{m}^{-3}}\]
  done clear
  C)
   \[3\times {{10}^{12}}{{m}^{-3}}\]
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer32) The de-Broglie wavelength of an electron, a-particle and a proton all having the same kinetic energy is respectively given as \[{{\lambda }_{e}},\,{{\lambda }_{\alpha }}\] and \[{{\lambda }_{p}}\]. Then which of the following is not true?
  A)
   \[{{\lambda }_{e}}>{{\lambda }_{p}}\]
  done clear
  B)
   \[{{\lambda }_{p}}>{{\lambda }_{\alpha }}\]
  done clear
  C)
   \[{{\lambda }_{e}}>{{\lambda }_{\alpha }}\]
  done clear
  D)
   \[{{\lambda }_{\alpha }}<{{\lambda }_{p}}<{{\lambda }_{e}}\]
  done clear
  View Answer play_arrow

• question_answer33) What is the disintegration constant of radon, if the number of its atoms diminishes by 18% in 24 h?
  A)
   \[2.1\times {{10}^{-3}}{{s}^{-1}}\]
  done clear
  B)
   \[2.1\times {{10}^{-4}}{{s}^{-1}}\]
  done clear
  C)
   \[2.1\times {{10}^{-5}}{{s}^{-1}}\]
  done clear
  D)
   \[2.1\times {{10}^{-6}}{{s}^{-1}}\]
  done clear
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• question_answer34) Which of the following statements is true for an n-type semiconductor?
  A)
   The donor level lies closely below the bottom of the conduction band
  done clear
  B)
   The donor level lies closely above the top of the valence band
  done clear
  C)
   The donor level lies at the halfway mark of the forbidden energy gap
  done clear
  D)
   None of the above
  done clear
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• question_answer35) Carbon, silicon and germanium have four valence electrons each. These are characterized by valence and conduction bands separated by energy band gap respectively equal to \[{{({{E}_{g}})}_{C}},\,{{({{E}_{g}})}_{Si}}\] and \[{{({{E}_{g}})}_{Ge}}\]. Which of the following statements is true?
  A)
   \[{{({{E}_{g}})}_{C}}={{({{E}_{g}})}_{Si}}={{({{E}_{g}})}_{Ge}}\]
  done clear
  B)
   \[{{({{E}_{g}})}_{C}}>{{({{E}_{g}})}_{Si}}>{{({{E}_{g}})}_{Ge}}\]
  done clear
  C)
   \[{{({{E}_{g}})}_{C}}<{{({{E}_{g}})}_{Ge}}>{{({{E}_{g}})}_{Si}}\]
  done clear
  D)
   \[{{({{E}_{g}})}_{Si}}<{{({{E}_{g}})}_{Ge}}>{{({{E}_{g}})}_{C}}\]
  done clear
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• question_answer36) A particle executes SHM of amplitude 25 cm and time period 3 s. What is the minimum time required for the particle to move between two points 12.5 cm on either side of the mean position?
  A)
   0.5 s          
  done clear
  B)
   1.0 s
  done clear
  C)
   1.5 s         
  done clear
  D)
   2.0 s
  done clear
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• question_answer37) The speed of a wave on a string is 150 m/s when the tension is 120 N. The percentage increase in the tension in order to raise the wave speed by 20% is :
  A)
   44%         
  done clear
  B)
   40%
  done clear
  C)
   20%         
  done clear
  D)
   10%
  done clear
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• question_answer38) A straight rod of length L has one of its ends at the origin and the other at x = L. If the mass per unit length of the rod is given by A \[x\], where A is constant, where is its mass centre?
  A)
   \[\frac{L}{3}\]              
  done clear
  B)
   \[\frac{L}{2}\]
  done clear
  C)
   \[\frac{2L}{3}\]
  done clear
  D)
   \[\frac{3L}{4}\]
  done clear
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• question_answer39) The image of a small electric bulb fixed on the wall of a room is to b6 obtained on the opposite wall 4 m away by means of a large convex lens. The maximum possible focal length of the lens required for this purpose will be :
  A)
   0.5 m           
  done clear
  B)
   1.0 m
  done clear
  C)
   1.5m          
  done clear
  D)
   2.0m
  done clear
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• question_answer40) The total energy of a satellite moving with an orbital velocity v around the earth is :
  A)
   \[\frac{1}{2}m{{v}^{2}}\]
  done clear
  B)
   \[-\frac{1}{2}m{{v}^{2}}\]
  done clear
  C)
   \[m{{v}^{2}}\]
  done clear
  D)
   \[\frac{3}{2}\,m{{v}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer41) In hydrogen atom, the electron is moving round the nucleus with velocity \[2.18\times {{10}^{6}}\]m/s in an orbit of radius \[0.528\overset{\text{o}}{\mathop{\text{A}}}\,\]. The acceleration of the electron is :
  A)
   \[9\times {{10}^{18}}m/{{s}^{2}}\]
  done clear
  B)
   \[9\times {{10}^{22}}m/{{s}^{2}}\]
  done clear
  C)
   \[9\times {{10}^{-22}}m/{{s}^{2}}\]
  done clear
  D)
   \[9\times {{10}^{22}}m/{{s}^{2}}\]
  done clear
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• question_answer42) When a spring is stretched by a distance x, it exerts a force given by \[F=(-5x-16{{x}^{3}})N\] The work done, when the spring is stretched from 0.1 m to 0.2 m is:
  A)
   \[8.7\times {{10}^{-2}}J\]
  done clear
  B)
   \[12.2\times {{10}^{-2}}J\]
  done clear
  C)
   \[8.1\times {{10}^{-1}}J\]
  done clear
  D)
   \[12.2\times {{10}^{-1}}J\]
  done clear
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• question_answer43) The flow of liquid is laminar or stream line is determined by:
  A)
   rate of flow of liquid
  done clear
  B)
   density of fluid
  done clear
  C)
   radius of the tube
  done clear
  D)
   coefficient of viscosity of liquid
  done clear
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• question_answer44) If boiling point of water is \[{{95}^{o}}F\], what will be reduction at Celsius scale?
  A)
   \[{{7}^{o}}C\]            
  done clear
  B)
   \[{{65}^{o}}C\]
  done clear
  C)
   \[{{63}^{o}}C\]
  done clear
  D)
   \[{{35}^{o}}C\]
  done clear
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• question_answer45) The motion of a particle varies with time according to the relation \[y=a\,(\sin \,\omega \,t+\cos \,\omega \,t)\]
  A)
   The motion is oscillatory but not SHM
  done clear
  B)
   The motion is SHM with amplitude a
  done clear
  C)
   The motion is SHM with amplitude \[a\sqrt{2}\]
  done clear
  D)
   The motion is SHM with amplitude 2a
  done clear
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• question_answer46) Two closed organ pipes A and B have the same length. A is wider than B. They resonate in the fundamental mode at frequencies \[{{n}_{A}}\] and \[{{n}_{B}}\] respectively, then :
  A)
   \[{{n}_{A}}={{n}_{B}}\]
  done clear
  B)
   \[{{n}_{A}}>{{n}_{B}}\]
  done clear
  C)
   \[{{n}_{A}}<{{n}_{B}}\]
  done clear
  D)
   either [b] or [c] depending on the ratio of their diameters
  done clear
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• question_answer47) Two waves having sinusoidal waveforms have different wavelengths and different amplitudes. They will be having :
  A)
   same pitch and different intensity
  done clear
  B)
   same quality and different intensity
  done clear
  C)
   different quality and different intensity
  done clear
  D)
   same quality and different pitch
  done clear
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• question_answer48) In double slit experiment, the distance between two slits is 0.6 mm and these are illuminated with light of wavelength \[4800\overset{\text{o}}{\mathop{\text{A}}}\,\]. The angular width of first dark fringe on the screen distant 120 cm from slits will be :
  A)
   \[8\times {{10}^{-4}}\]rad    
  done clear
  B)
   \[6\times {{10}^{-4}}\]rad
  done clear
  C)
   \[4\times {{10}^{-4}}\]rad    
  done clear
  D)
   \[16\times {{10}^{-4}}\]rad
  done clear
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• question_answer49) If there were no atmosphere, the average temperature on the surface of the earth would be:
  A)
   lower         
  done clear
  B)
   higher
  done clear
  C)
   same as now 
  done clear
  D)
   \[{{0}^{o}}\]
  done clear
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• question_answer50) The ionisation energy of 10 times ionized sodium atom is :
  A)
   \[\frac{13.6}{11}eV\]
  done clear
  B)
   \[\frac{13.6}{112}eV\]
  done clear
  C)
   \[13.6\times {{(11)}^{2}}eV\]
  done clear
  D)
   13.6 eV
  done clear
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• question_answer51) When \[C{{H}_{3}}COOH\] reacts with \[C{{H}_{3}}-MgX\]:
  A)
   \[C{{H}_{3}}COX\] is formed
  done clear
  B)
   hydrocarbon is formed
  done clear
  C)
   acetone is formed
  done clear
  D)
   alcohol is formed
  done clear
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• question_answer52) A cyclic hydrocarbon molecule has all the carbon and hydrogen is a single plane. All the carbon-carbon bonds are of same length, less than \[1.54\,\overset{o}{\mathop{A}}\,\], but more than \[1.34\,\overset{o}{\mathop{A}}\,\]. The C-C bond angle will be :
  A)
   \[{{109}^{o}}28\]
  done clear
  B)
   \[{{100}^{o}}\]
  done clear
  C)
   \[{{180}^{o}}\]
  done clear
  D)
   \[{{120}^{o}}\]
  done clear
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• question_answer53) Which will reduce zinc oxide to zinc?
  A)
   Mg            
  done clear
  B)
   Pb
  done clear
  C)
   Cu            
  done clear
  D)
   Fe
  done clear
  View Answer play_arrow

• question_answer54) Some chemists at ISRO wished to prepare a saturated solution of a silver compound and they wanted it to have the highest concentration of silver ion possible. Which of the following compounds, would they use? \[{{K}_{sp}}(AgCl)=1.8\times {{10}^{-10}}\], \[{{K}_{sp}}(AgBr)=5.0\times {{10}^{-13}}\], \[{{K}_{sp}}(A{{g}_{2}}Cr{{O}_{4}})=2.4\times {{10}^{-12}}\]
  A)
   \[AgCl\]
  done clear
  B)
   \[AgBr\]
  done clear
  C)
   \[AgCr{{O}_{4}}\]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer55) By Wurtz reaction, a mixture of methyl iodide and ethyl iodide gives :
  A)
   butane
  done clear
  B)
   ethane
  done clear
  C)
   propane
  done clear
  D)
   A mixture of the above three
  done clear
  View Answer play_arrow

• question_answer56) Addition of \[SnC{{l}_{2}}\] to \[HgC{{l}_{2}}\] gives precipitate :
  A)
   white turning to red.
  done clear
  B)
   white turning to grey
  done clear
  C)
   black turning to white
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer57) In fermentation by zymase, alcohol and \[C{{O}_{2}}\]are obtained from:
  A)
   invert sugar     
  done clear
  B)
   glucose
  done clear
  C)
   fructose         
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer58) The stability of ferric ion is due to :
  A)
   half filled \[f\]-orbitals
  done clear
  B)
   half filled d-orbitals
  done clear
  C)
   completely filled \[f\]-orbitals
  done clear
  D)
   completely filled d-orbitals
  done clear
  View Answer play_arrow

• question_answer59) Electron affinity is positive, when :
  A)
   O changes into CT
  done clear
  B)
   \[{{O}^{-}}\]changes into \[{{O}^{2-}}\]
  done clear
  C)
   O changes into \[{{O}^{+}}\]
  done clear
  D)
   electron affinity is always negative
  done clear
  View Answer play_arrow

• question_answer60) lonisation potential for a noble gas is :
  A)
   maximum in a period
  done clear
  B)
   minimum in a period
  done clear
  C)
   either minimum or maximum
  done clear
  D)
   constant
  done clear
  View Answer play_arrow

• question_answer61) Ethylamine on acetylation gives :
  A)
   N-ethyl acetamide
  done clear
  B)
   acetamide
  done clear
  C)
   methyl acetamide
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer62) Strongest oxidising agent among halogen is :
  A)
   \[{{I}_{2}}\]      
  done clear
  B)
   \[B{{r}_{2}}\]
  done clear
  C)
   \[C{{l}_{2}}\]
  done clear
  D)
   \[{{F}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer63) Which reagent can convert acetic acid into ethanol?
  A)
   Na+alcohol   
  done clear
  B)
   \[LiAl{{H}_{4}}\] ether
  done clear
  C)
   \[{{H}_{2}}+Pt\]        
  done clear
  D)
   \[Sn+HCl\]
  done clear
  View Answer play_arrow

• question_answer64) In presence of moisture, \[S{{O}_{2}}\] can :
  A)
   act as oxidant  
  done clear
  B)
   act as reductant
  done clear
  C)
   gain electron   
  done clear
  D)
   not act as reductant
  done clear
  View Answer play_arrow

• question_answer65) Acetals are:
  A)
   ketones        
  done clear
  B)
   diethers
  done clear
  C)
   aldehyde       
  done clear
  D)
   hydroxy aldehydes
  done clear
  View Answer play_arrow

• question_answer66) The principle involved in the classification of basic radicals, is :
  A)
   common ion effect
  done clear
  B)
   solubility product
  done clear
  C)
   valency of radicals
  done clear
  D)
   strength of salt
  done clear
  View Answer play_arrow

• question_answer67) Formation of diethyl ether from ethanol is based on a :
  A)
   dehydration reaction
  done clear
  B)
   dehydrogenation reaction
  done clear
  C)
   hydrogenation reaction
  done clear
  D)
   homolytic fission reaction
  done clear
  View Answer play_arrow

• question_answer68) Hypo phosphorus acid, \[{{H}_{3}}P{{O}_{2}}\] is :
  A)
   a monobasic acid
  done clear
  B)
   a tribasic acid
  done clear
  C)
   a dibasic acid   
  done clear
  D)
   not acidic at all
  done clear
  View Answer play_arrow

• question_answer69) What is obtained when acetyl chloride is heated with benzene in presence of anhydrous\[AlC{{l}_{3}}\]?
  A)
   Acetyl benzoic acid
  done clear
  B)
   Anisol
  done clear
  C)
   Acetophenone
  done clear
  D)
   Chlorobenzene
  done clear
  View Answer play_arrow

• question_answer70) Which gas is used in airated water?
  A)
   \[C{{O}_{2}}\]
  done clear
  B)
   \[S{{O}_{2}}\]
  done clear
  C)
   \[CO\]
  done clear
  D)
   Water vapours
  done clear
  View Answer play_arrow

• question_answer71) The refluxing of \[{{(C{{H}_{3}})}_{2}}NCOC{{H}_{3}}\] with acid gives:
  A)
   \[{{(C{{H}_{3}})}_{2}}NH+C{{H}_{3}}COOH\]
  done clear
  B)
   \[{{(C{{H}_{3}})}_{2}}NCOOH+C{{H}_{4}}\]
  done clear
  C)
   \[2C{{H}_{3}}OH+C{{H}_{3}}CON{{H}_{2}}\]
  done clear
  D)
   \[2C{{H}_{3}}N{{H}_{2}}+C{{H}_{3}}COOH\]
  done clear
  View Answer play_arrow

• question_answer72) Which is obtained on treating phenol, with dilute \[HN{{O}_{3}}\]?
  A)
            
  done clear
  B)
    
  done clear
  C)
    
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer73) Solder is an alloy of lead with :
  A)
   copper         
  done clear
  B)
   zinc
  done clear
  C)
   nickel           
  done clear
  D)
   tin
  done clear
  View Answer play_arrow

• question_answer74) Arrange \[NH_{4}^{+},{{H}_{2}}O,\,{{H}_{3}}{{O}^{+}}\] and \[O{{H}^{-}}\] in increasing order of acidic nature :
  A)
   \[{{H}_{3}}\overset{+}{\mathop{O}}\,<NH_{4}^{+}<HF<O{{H}^{-}}<{{H}_{2}}O\]
  done clear
  B)
   \[NH_{4}^{+}<HF<{{H}_{3}}{{O}^{+}}<{{H}_{2}}O<O{{H}^{-}}\]
  done clear
  C)
   \[H{{O}^{-}}<{{H}_{2}}O<NH_{4}^{+}<HF<{{H}_{3}}{{O}^{+}}\]
  done clear
  D)
   \[{{H}_{3}}{{O}^{+}}>HF>{{H}_{2}}O>NH_{4}^{+}>O{{H}^{-}}\]
  done clear
  View Answer play_arrow

• question_answer75) Which of the following radicals gives the apple green flame during flame test?
  A)
   \[B{{a}^{2+}}\]
  done clear
  B)
   \[S{{r}^{2+}}\]
  done clear
  C)
   \[C{{a}^{2+}}\]           
  done clear
  D)
   \[C{{r}^{3+}}\]
  done clear
  View Answer play_arrow

• question_answer76) When chlorine is passed through concentrated solution of KOH, the compound formed is :
  A)
   \[KCl{{O}_{4}}\]
  done clear
  B)
   \[KCl{{O}_{3}}\]
  done clear
  C)
   \[KCl{{O}_{2}}\]
  done clear
  D)
   \[KClO\]
  done clear
  View Answer play_arrow

• question_answer77) The equilibrium constant \[{{K}_{p}}\] for the reaction, \[{{H}_{2}}(g)+{{I}_{2}}(g)2HI(g)\] is:
  A)
   more than one  
  done clear
  B)
   less than one
  done clear
  C)
   equal to \[{{K}_{c}}\]     
  done clear
  D)
   zero
  done clear
  View Answer play_arrow

• question_answer78) What is the weight of oxygen that is required for the complete combustion of 2.8 kg of ethylene?
  A)
   9.6kg        
  done clear
  B)
   96.0kg
  done clear
  C)
   6.4kg         
  done clear
  D)
   2.8kg
  done clear
  View Answer play_arrow

• question_answer79) The metal that does not displace hydrogen from an acid is :
  A)
   Ca             
  done clear
  B)
   Al
  done clear
  C)
   Zn            
  done clear
  D)
   Hg
  done clear
  View Answer play_arrow

• question_answer80) The decomposition of \[{{N}_{2}}{{O}_{5}}\] occurs as,\[2{{N}_{2}}{{O}_{5}}\xrightarrow{{}}4{{N}_{2}}+{{O}_{2}}\], and follows 1st order kinetics, hence :
  A)
   the reaction is unimolecular
  done clear
  B)
   the reaction is bimolecular
  done clear
  C)
   \[{{t}_{1/2}}\propto {{a}^{0}}\]
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer81) Atomic radii of F and Ne, in \[\overset{o}{\mathop{A}}\,\], are given by :
  A)
   0.72, 0.71      
  done clear
  B)
   0.72, 1.6
  done clear
  C)
   1.6, 1.58       
  done clear
  D)
   0.71, 0.72
  done clear
  View Answer play_arrow

• question_answer82) Which pair has both members from the same period of periodic table?
  A)
   \[Cl,\,Br\]         
  done clear
  B)
   \[Ca,\,Cl\]
  done clear
  C)
   \[Na,\,Ca\]
  done clear
  D)
   \[Na,\,Cl\]
  done clear
  View Answer play_arrow

• question_answer83) When dilute aqueous solution of \[AgN{{O}_{3}}\](excess) is added to KI solution, positively charged sol of \[Agl\] is formed due to adsorption of:
  A)
   \[NO_{3}^{-}\]
  done clear
  B)
   \[O_{2}^{-}\]
  done clear
  C)
   \[A{{g}^{+}}\]
  done clear
  D)
   \[{{K}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer84) Which of the following has largest ionic radius?
  A)
   \[C{{s}^{+}}\]
  done clear
  B)
   \[L{{i}^{+}}\]
  done clear
  C)
   \[N{{a}^{+}}\]
  done clear
  D)
   \[{{K}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer85) For \[CaC{{O}_{3}}(s)CaO(s)+C{{O}_{2}}(g)\] at\[{{927}^{o}}C\], \[\Delta H=176\,kJ\,mol\]; then \[\Delta E\] is :
  A)
   180 kJ         
  done clear
  B)
   186.4 kJ
  done clear
  C)
   166.0 kJ       
  done clear
  D)
   160 kJ
  done clear
  View Answer play_arrow

• question_answer86) The charge required to liberate one gram equivalent of an element is :
  A)
   96500F       
  done clear
  B)
   1 F
  done clear
  C)
   1 C
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer87) The shape of sulphate ion is:
  A)
   square planar    
  done clear
  B)
   trigonal
  done clear
  C)
   trigonal planar  
  done clear
  D)
   tetrahedral
  done clear
  View Answer play_arrow

• question_answer88) The \[H-H\] bond energy is \[430\,kJ\,\,mo{{l}^{-1}}\] and \[Cl-Cl\] bond energy is \[240\,\,kJ\,\,mo{{l}^{-1}},\,\,\Delta H\] for \[HCl\] is - 90 kJ. The \[H-Cl\] bond energy is about:
  A)
   \[180\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  B)
   \[360\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  C)
   \[213\,\,kJ\,\,mo{{l}^{-1}}\]   
  done clear
  D)
   \[425\,\,kJ\,\,mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer89) In the equation\[{{H}_{2}}S+2HN{{O}_{3}}\xrightarrow{{}}2{{H}_{2}}O+2N{{O}_{2}}+S\]. The equivalent weight of hydrogen sulphide is :
  A)
   18             
  done clear
  B)
   68
  done clear
  C)
   34     
  done clear
  D)
   17
  done clear
  View Answer play_arrow

• question_answer90) The energy released in an atom bomb explosion is mainly due to :
  A)
   release of neutrons
  done clear
  B)
   release of electrons
  done clear
  C)
   greater mass of products than initial material
  done clear
  D)
   lesser mass of products than initial material
  done clear
  View Answer play_arrow

• question_answer91) Highest entropy is in:
  A)
   hydrogen      
  done clear
  B)
   water
  done clear
  C)
   graphite        
  done clear
  D)
   mercury
  done clear
  View Answer play_arrow

• question_answer92) Which one will liberate \[B{{r}_{2}}\] from HBr?
  A)
   \[{{I}_{2}}\]
  done clear
  B)
   \[S{{O}_{2}}\]
  done clear
  C)
   \[HI\]
  done clear
  D)
   \[C{{l}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer93) Nuclides :
  A)
   have specific atomic numbers
  done clear
  B)
   have same number of protons
  done clear
  C)
   have specific atomic number and mass numbers
  done clear
  D)
   are isotopes
  done clear
  View Answer play_arrow

• question_answer94) Arrhenius equation is :
  A)
   \[\Delta H=\Delta E+\Delta {{n}_{g}}RT\]
  done clear
  B)
   \[\Delta G=\Delta H-T\,.\,\,\Delta S\]
  done clear
  C)
   \[K=A{{e}^{-{{E}_{a}}/RT}}\]
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer95) In which of the following compounds, the oxidation number of iodine is fractional?
  A)
   \[I{{F}_{3}}\]             
  done clear
  B)
   \[I{{F}_{5}}\]
  done clear
  C)
   \[I_{3}^{-}\]
  done clear
  D)
   \[I{{F}_{7}}\]
  done clear
  View Answer play_arrow

• question_answer96) Non-directional orbital is :
  A)
   4 p             
  done clear
  B)
   4 d
  done clear
  C)
  \[4f\]             
  done clear
  D)
   3s
  done clear
  View Answer play_arrow

• question_answer97) A monoprotic acid in 1.00 M solution is 0.01% ionised. The dissociation constant of this acid is :
  A)
   \[1\times {{10}^{-8}}\]       
  done clear
  B)
   \[1\times {{10}^{-4}}\]
  done clear
  C)
   \[1\times {{10}^{-6}}\]
  done clear
  D)
   \[1\times {{10}^{-5}}\]
  done clear
  View Answer play_arrow

• question_answer98) If both oxygen and helium gases are at the same temperature, the rate of diffusion of \[{{O}_{2}}\] is very close to :
  A)
   4 times that of He
  done clear
  B)
   2 times that of He
  done clear
  C)
   0.35 times that of He
  done clear
  D)
   8 times that of He
  done clear
  View Answer play_arrow

• question_answer99) A white substance having alkaline nature in solution is:
  A)
   \[NaN{{O}_{3}}\]
  done clear
  B)
   \[N{{H}_{4}}Cl\]
  done clear
  C)
   \[N{{a}_{2}}C{{O}_{3}}\]
  done clear
  D)
   \[F{{e}_{2}}{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer100) A solution of \[FeC{{l}_{3}}\] in water acts as acidic solution due to :
  A)
   hydrolysis of \[F{{e}^{3+}}\]
  done clear
  B)
   acidic impurities
  done clear
  C)
   dissociation
  done clear
  D)
   ionization
  done clear
  View Answer play_arrow

• question_answer101) Which of the following is known as pond silk?
  A)
   Spirogrya      
  done clear
  B)
   Ulothrix
  done clear
  C)
   Nostoc         
  done clear
  D)
   Anabaena
  done clear
  View Answer play_arrow

• question_answer102) Which is the following in incorrectly matched?
  A)
   Rabbit-microlecithal, isolecithal
  done clear
  B)
   Frog-mesolecithal, centrolecithal
  done clear
  C)
   Human-mesolecithal, centrolecithal
  done clear
  D)
   Birds-macrolecithal, telolecithal
  done clear
  View Answer play_arrow

• question_answer103) In a copulation pair of Pheretima posthuma which of the two processes take place?
  A)
   Internal fertilization and reciprocal fertilization
  done clear
  B)
   Cross fertilization and reciprocal fertilization
  done clear
  C)
   Reciprocal fertilization and internal fertilization
  done clear
  D)
   External fertilization and internal fertilization
  done clear
  View Answer play_arrow

• question_answer104) A students sets up an experiment on photosynthesis as follow : He takes soda water in a glass tumbler and add a chlorophyll extracts into the contents and keeps the tumbler exposed sunlight hoping that he has provided necessary ingredient for photosynthesis to proceed (viz. \[C{{O}_{2}},\,{{H}_{2}}O\], chlorophyll and light). What do you think what will happen after, say few hours of exposure of light?
  A)
   Photosynthesis will take place and glucose will produced
  done clear
  B)
   Photosynthesis will take place and starch will be produced which will turn the mixture turbid
  done clear
  C)
   Photosynthesis will not take place because\[C{{O}_{2}}\] dissolved in soda water escapes into the atmosphere
  done clear
  D)
   Photosynthesis will not take place because intact chloroplasts are needed for the process
  done clear
  View Answer play_arrow

• question_answer105) The pesticide most persistent in the soil is :
  A)
   DDT          
  done clear
  B)
   BHC
  done clear
  C)
   dieldrin       
  done clear
  D)
   baygon
  done clear
  View Answer play_arrow

• question_answer106) An antibody is a:
  A)
   white corpuscle which attack invading bacteria
  done clear
  B)
   molecule that specifically inactivate an antigen
  done clear
  C)
   component of the blood
  done clear
  D)
   secretions of mammalian erythrocyte
  done clear
  View Answer play_arrow

• question_answer107) ECG is a measure of :
  A)
   rate of heart beat
  done clear
  B)
   difference in electric potential
  done clear
  C)
   volume of blood pumped
  done clear
  D)
   ventricular contraction
  done clear
  View Answer play_arrow

• question_answer108) Vitreous humor is :
  A)
   colloid
  done clear
  B)
   watery fluid
  done clear
  C)
   mucoid connective tissue
  done clear
  D)
   all of the above
  done clear
  View Answer play_arrow

• question_answer109) In respiration, largest amount of energy is produced in:
  A)
   anaerobic respiration
  done clear
  B)
   Krebs cycle
  done clear
  C)
   glycolysis
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer110) Torpedo is commonly known as :
  A)
   suckerfish      
  done clear
  B)
   electric ray
  done clear
  C)
   globefish       
  done clear
  D)
   sea horse
  done clear
  View Answer play_arrow

• question_answer111) Foramen of panizzae is found in the heart of:
  A)
   rabbit          
  done clear
  B)
   pigeon
  done clear
  C)
   crocodile       
  done clear
  D)
   frog
  done clear
  View Answer play_arrow

• question_answer112) Which one of the following pesticides is banned now-a-days?
  A)
   DDT          
  done clear
  B)
   Eldrin
  done clear
  C)
   Aldrin         
  done clear
  D)
   Toxaphene
  done clear
  View Answer play_arrow

• question_answer113) Carnassial teeth are modified for :
  A)
   crushing       
  done clear
  B)
   tearing
  done clear
  C)
   grinding        
  done clear
  D)
   cutting
  done clear
  View Answer play_arrow

• question_answer114) In the anther wall:
  A)
   tapefum lies between endothecium and middle layers
  done clear
  B)
   tapetum lies just inner to endothecium
  done clear
  C)
   middle layer is the between endothecium and tapetum
  done clear
  D)
   endothecium lies to middle layer
  done clear
  View Answer play_arrow

• question_answer115) Insectivorous plants grow in a soil:
  A)
   deficient in iron
  done clear
  B)
   rich in nitrogen
  done clear
  C)
   deficient in nitrogen
  done clear
  D)
   deficient in calcium
  done clear
  View Answer play_arrow

• question_answer116) Aleurone grains are rich in :
  A)
   fat             
  done clear
  B)
   protein
  done clear
  C)
   carbohydrates  
  done clear
  D)
   auxins
  done clear
  View Answer play_arrow

• question_answer117) Meiosis can be observed in :
  A)
   tapetal cells    
  done clear
  B)
   megaspores
  done clear
  C)
   micropores     
  done clear
  D)
   spore mother cells
  done clear
  View Answer play_arrow

• question_answer118) Which of the following is not an intermediate in Krebs cycle?
  A)
   Acetic acid
  done clear
  B)
   Succinyl coenzyme-A
  done clear
  C)
   Maleic acid
  done clear
  D)
   Citric acid
  done clear
  View Answer play_arrow

• question_answer119) The possible beneficial aspect of gazing animals is the:
  A)
   removal of wild animals and pests
  done clear
  B)
   eradication of weeds
  done clear
  C)
   removal of wild plants
  done clear
  D)
   addition of their excreta into the soil
  done clear
  View Answer play_arrow

• question_answer120) Carrier proteins are involved in :
  A)
   transport of enzymes
  done clear
  B)
   water transport
  done clear
  C)
   active transport of ions
  done clear
  D)
   passive transport of ions
  done clear
  View Answer play_arrow

• question_answer121) McClintock is related to :
  A)
   plasmids       
  done clear
  B)
   retroposons
  done clear
  C)
   transposons    
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer122) Chloroplasts of Spirogyra have :
  A)
   spiral margin
  done clear
  B)
   smooth of waxy margin
  done clear
  C)
   smooth margin
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer123) Vascular bundles, in which phloem is found on both sides xylem are called :
  A)
   collateral       
  done clear
  B)
   bicollateral
  done clear
  C)
   radial           
  done clear
  D)
   amphicribral
  done clear
  View Answer play_arrow

• question_answer124) Aerenchyma is helpful in plants by:
  A)
   providing buoyancy in hydrophytes
  done clear
  B)
   absorption in stilt roots
  done clear
  C)
   giving mechanical strength to plants
  done clear
  D)
   giving flexibility to plants
  done clear
  View Answer play_arrow

• question_answer125) Who proposed the Cohesion Theory of ascent of sap?
  A)
   Strasburger    
  done clear
  B)
   Godlewski
  done clear
  C)
   Western        
  done clear
  D)
   Dixon and Jolly
  done clear
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• question_answer126) A child has single kidney since birth. This variation is :
  A)
   hybridisation   
  done clear
  B)
   negative meristic
  done clear
  C)
   blastogenic     
  done clear
  D)
   substantive
  done clear
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• question_answer127) Why is CO poisonous for man?
  A)
   CO affects the nerves of the lungs
  done clear
  B)
   Co affects the diaphragm and intercostal muscles
  done clear
  C)
   CO reacts with oxygen reducing percentage of \[{{C}_{2}}\] in air
  done clear
  D)
   haemoglobin combines with CO instead \[{{O}_{2}}\]and the product cannot dissociate
  done clear
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• question_answer128) Duct of Bellini opens on :
  A)
   ureter         
  done clear
  B)
   renal papilla
  done clear
  C)
   duodenum     
  done clear
  D)
   DCT
  done clear
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• question_answer129) Humus is essential for plant growth because :
  A)
   it is rich in nutrients and increases the water holding capacity of soil
  done clear
  B)
   it increases aeration of soil
  done clear
  C)
   it increases porocity of soil
  done clear
  D)
   all of the above
  done clear
  View Answer play_arrow

• question_answer130) Which of the following is viviparous?
  A)
   Running birds  
  done clear
  B)
   Whales
  done clear
  C)
   Bats           
  done clear
  D)
   Both [b] and [c]
  done clear
  View Answer play_arrow

• question_answer131) In short homed cattle, genes for red (R) and white (r) coat colour occur, cross between red (RR) and white (rr) produced (Rr) roan. This is an example of:
  A)
   incomplete dominance
  done clear
  B)
   codominance
  done clear
  C)
   complementary genes
  done clear
  D)
   epistasis
  done clear
  View Answer play_arrow

• question_answer132) Complex tissue includes :
  A)
   collenchyma   
  done clear
  B)
   apical meristems
  done clear
  C)
   conducting tissue
  done clear
  D)
   idioblast
  done clear
  View Answer play_arrow

• question_answer133) Turpentine oil is obtained from :
  A)
   Pinus longifolia 
  done clear
  B)
   Melia azadirachta
  done clear
  C)
   Eucalyptus      
  done clear
  D)
   All of these
  done clear
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• question_answer134) The sclerenchyma of the hypodermis in the Pinus needle helps in :
  A)
   increasing the absorptive surface of the cell
  done clear
  B)
   checking transpiration
  done clear
  C)
   mechanical support
  done clear
  D)
   photosynthesis  
  done clear
  View Answer play_arrow

• question_answer135) Sponges are :
  A)
   pelagic         
  done clear
  B)
   free-swimming
  done clear
  C)
   planktonic       
  done clear
  D)
   sessile
  done clear
  View Answer play_arrow

• question_answer136) Schistosoma is a parasite found in :
  A)
   testes of frog    
  done clear
  B)
   liver
  done clear
  C)
   intestine        
  done clear
  D)
   blood
  done clear
  View Answer play_arrow

• question_answer137) The recent model for plasma membrane proposed by Singer and Nicolson is :
  A)
   molecular-lipid model
  done clear
  B)
   lamellar model
  done clear
  C)
   unit membrane mode
  done clear
  D)
   fluid mosaic model
  done clear
  View Answer play_arrow

• question_answer138) Cells obtained from cancerous tumours are known as :
  A)
   hybridomas    
  done clear
  B)
   myelomas
  done clear
  C)
   polyclonal cells
  done clear
  D)
   monoclonal cells
  done clear
  View Answer play_arrow

• question_answer139) Significance of meiosis lies in :
  A)
   reduction of chromosome number to one half
  done clear
  B)
   maintaining consistency of chromosome number during sexual reproduction
  done clear
  C)
   production of genetic variability
  done clear
  D)
   allot the above
  done clear
  View Answer play_arrow

• question_answer140) Which is the connecting link between glycolysis and Krebs cycle?
  A)
   Acteyl Co-A    
  done clear
  B)
   Pyruvic acid
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer141) Mark the correct sequence :
  A)
   Anthesis \[\to \] Meiosis \[\to \] Pollination \[\to \] Syngamy
  done clear
  B)
   Pollination \[\to \] Meiosis \[\to \] Anthesis \[\to \]Syngamy
  done clear
  C)
   Anthesis \[\to \] Pollination \[\to \] Meiosis \[\to \]Syngamy
  done clear
  D)
   Anthesis \[\to \] Meiosis \[\to \] Pollination \[\to \]Syngamy
  done clear
  View Answer play_arrow

• question_answer142) The relationship between the alga Microcystis and the surrounding fauna correspond to :
  A)
   ammensalism   
  done clear
  B)
   parasitism
  done clear
  C)
   predation      
  done clear
  D)
   exploitation
  done clear
  View Answer play_arrow

• question_answer143) Lipofucsin granules are found in :
  A)
   nerve cell     
  done clear
  B)
   cardiac muscle
  done clear
  C)
   red muscle      
  done clear
  D)
   cartilage
  done clear
  View Answer play_arrow

• question_answer144) Camel in its hump stores :
  A)
   water for emergency
  done clear
  B)
   fat for emergency
  done clear
  C)
   both fat and water for emergency
  done clear
  D)
   fat and proteins as reserve food for emergency
  done clear
  View Answer play_arrow

• question_answer145) Arrangement of three successive bases in the genetic code signifies :
  A)
   protein         
  done clear
  B)
   nucleic acid
  done clear
  C)
   plasmids       
  done clear
  D)
   amino acids
  done clear
  View Answer play_arrow

• question_answer146) Potato is a native of:
  A)
   Brazil          
  done clear
  B)
   Peru
  done clear
  C)
   Panama         
  done clear
  D)
   Mexico
  done clear
  View Answer play_arrow

• question_answer147) The anthers in Solanaceae are :
  A)
   monothecus, introse
  done clear
  B)
   dithecus, extrose
  done clear
  C)
   dithecus, introse
  done clear
  D)
   monothecus, extrose
  done clear
  View Answer play_arrow

• question_answer148) In India there is decline in female population as compared to males, this is because of:
  A)
   less female reach reproductive age
  done clear
  B)
   number of female children are born less as there is more chance of prenatal death in case of female child
  done clear
  C)
   female infanticide
  done clear
  D)
   all of the above
  done clear
  View Answer play_arrow

• question_answer149) During embryonic development endoskeleton and muscle develop from which germinal layer?
  A)
   Ectoderm      
  done clear
  B)
   Endoderm-
  done clear
  C)
   Mesoderm     
  done clear
  D)
   Blastopore
  done clear
  View Answer play_arrow

• question_answer150) The semen fluid consists of sperm cells and secretion from :
  A)
   seminal vesicle, prostate gland, Cowpers gland
  done clear
  B)
   seminal vesicle, testis, uterus
  done clear
  C)
   seminal vesicle, prostate gland, testis
  done clear
  D)
   seminal vesicle, Cowpers gland and testis 
  done clear
  View Answer play_arrow