Solved papers for BCECE Medical BCECE Medical Solved Papers-2007

done BCECE Medical Solved Papers-2007 Total Questions - 150

• question_answer1) A body is projected at such angle that the horizontal range is three times the greatest height. The .angle of projection is
  A)
   \[{{42}^{o}}8\]
  done clear
  B)
   \[{{53}^{o}}7\]
  done clear
  C)
   \[{{33}^{o}}7\]
  done clear
  D)
   \[{{25}^{o}}8\]
  done clear
  View Answer play_arrow

• question_answer2) A gas bubble formed from an explosion under water oscillates with a period T proportional to\[{{P}^{a}}{{d}^{b}}{{E}^{c}}\], where P is pressure, d is the density of water and E is the total energy of explosion. The value of a, b, c are
  A)
   \[a=1\], \[b=1,\,\,c=2\]
  done clear
  B)
   \[a=1\], \[b=2,\,\,c=1\]
  done clear
  C)
   \[a=\frac{5}{6}\], \[b=\frac{1}{2},c=\frac{1}{3}\]
  done clear
  D)
   \[a=-\frac{5}{6},b=\frac{1}{2},c=\frac{1}{3}\]
  done clear
  View Answer play_arrow

• question_answer3) A particle moving with a uniform acceleration travels 24m and 64m in the first two consecutive interval of 4 s each. Its initial velocity will be
  A)
   5 m/s
  done clear
  B)
   3m/s
  done clear
  C)
   1 m/s
  done clear
  D)
   4 m/s
  done clear
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• question_answer4) Two equal vectors have a resultant equal to either of them, then the angle between them will be
  A)
   \[{{120}^{o}}\]
  done clear
  B)
   \[{{110}^{o}}\]
  done clear
  C)
   \[{{60}^{o}}\]
  done clear
  D)
   \[{{150}^{o}}\]
  done clear
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• question_answer5) If the radius of earth of R then the height h at which the value of g becomes one fourth, will be
  A)
   \[\frac{R}{8}\]
  done clear
  B)
   \[\frac{3R}{8}\]
  done clear
  C)
   \[\frac{3R}{4}\]
  done clear
  D)
   \[\frac{R}{2}\]
  done clear
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• question_answer6) A body moves a distance of 10 m along a straight line under a action of 5 N force. If work done is 25 J, then angle between the force and direction of motion of the body will be
  A)
   \[{{75}^{o}}\]
  done clear
  B)
   \[{{60}^{o}}\]
  done clear
  C)
   \[{{45}^{o}}\]
  done clear
  D)
   \[{{30}^{o}}\]
  done clear
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• question_answer7) If 150 J of heat is added to a system and the work done by the system is 110 J, then change in internal energy will be
  A)
   40 J          
  done clear
  B)
   110 J
  done clear
  C)
   150 J         
  done clear
  D)
   260 J
  done clear
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• question_answer8) Sum-of the two binary numbers \[{{(100010)}_{2}}\] and \[{{(11011)}_{2}}\] is
  A)
   \[{{(111111)}_{2}}\]
  done clear
  B)
   \[{{(101111)}_{2}}\]
  done clear
  C)
   \[{{(111001)}_{2}}\]
  done clear
  D)
   \[{{(111101)}_{2}}\]
  done clear
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• question_answer9) What is the velocity of the bob of a simple pendulum at its mean position, if it is able to rise to vertical height of 10 cm? \[(g=9.8\,\,m/{{s}^{2}})\]
  A)
   2.2 m/s        
  done clear
  B)
   1.8 m/s
  done clear
  C)
   1.4 m/s        
  done clear
  D)
   0.6 m/s
  done clear
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• question_answer10) A body cools from \[{{60}^{o}}C\] to \[{{50}^{o}}C\] in 10 min. If the room temperature is \[{{25}^{o}}C\] and assuming Newton law of cooling to hold good, the temperature of the body at the end of the next 10 min will be
  A)
   \[{{45}^{o}}C\]          
  done clear
  B)
   \[{{42.85}^{o}}C\]
  done clear
  C)
   \[{{40}^{o}}C\]
  done clear
  D)
   \[{{38.5}^{o}}C\]
  done clear
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• question_answer11) At \[{{27}^{o}}C\] a gas suddenly compressed such that its pressure becomes \[\frac{1}{8}th\] of original pressure. The temperature of the gas will be \[(\gamma =5/3)\]
  A)
   \[-{{142}^{o}}C\]
  done clear
  B)
   300 K
  done clear
  C)
   \[{{327}^{o}}C\]
  done clear
  D)
   420 K
  done clear
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• question_answer12) An ideal refrigerator has a freezer at a temperature of \[-{{13}^{o}}C\]. The coefficient o performance of the engine is 5. The temperature of the air (to which heat is rejected) will be
  A)
   \[{{325}^{o}}C\]
  done clear
  B)
   325 K
  done clear
  C)
   \[{{39}^{o}}C\]
  done clear
  D)
   \[{{320}^{o}}C\]
  done clear
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• question_answer13) In a capacitor of capacitance 20\[\mu F\] the distance between the plates is 2 mm. If a dielectric slab of width 1 mm and dielectric constant 2 is inserted between the plates, then the new capacitance will be
  A)
   22\[\mu F\]          
  done clear
  B)
   26.6 \[\mu F\]
  done clear
  C)
   52.2 \[\mu F\]
  done clear
  D)
   13 \[\mu F\]
  done clear
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• question_answer14) An automobile spring extends 0.2 m for 5000 N load. The ratio of potential energy stored in this spring when it has been compressed by 0.2 m to the potential energy stored in a 10 \[\mu F\]capacitor at a potential difference of 10000 V will be
  A)
   1/4           
  done clear
  B)
   1
  done clear
  C)
   1/2           
  done clear
  D)
   2
  done clear
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• question_answer15) A solid metallic sphere has a charge + 3Q. Concentric with this sphere is a conducting spherical shell having charge - Q. The radius of the sphere is a and that of the spherical shell is\[b(b>a)\]. What is the electric field at a distance \[R(a<R<b)\] from the centre?
  A)
   \[\frac{4Q}{2\pi \,{{\varepsilon }_{0}}{{R}^{2}}}\]
  done clear
  B)
   \[\frac{3Q}{4\pi \,{{\varepsilon }_{0}}{{R}^{2}}}\]
  done clear
  C)
   \[\frac{3Q}{2\pi \,{{\varepsilon }_{0}}{{R}^{2}}}\]
  done clear
  D)
   \[\frac{Q}{2\pi \,{{\varepsilon }_{0}}R}\]
  done clear
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• question_answer16) Output Y is given by :
  A)
   \[(\overline{X}\,.\,\,\overline{Y})\,.\,\,Z\]
  done clear
  B)
   \[(X\,.\,\,Y)\,.\,\,Z\]
  done clear
  C)
   \[(X\,+\,Y)\overline{Z}\]
  done clear
  D)
   \[(\overline{X}\,.\,\overline{Y}+\overline{Z}\]
  done clear
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• question_answer17) In a network as shown in the figure, the potential difference across the resistance 2R is (the cell has an emf of £ volts and has no internal resistance)
  A)
   2E            
  done clear
  B)
   \[\frac{4E}{7}\]
  done clear
  C)
   \[\frac{E}{7}\]               
  done clear
  D)
   E
  done clear
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• question_answer18) The resistance of a galvanometer coil is R, then the shunt resistance required to convert it into a ammeter of range 4 times, will be
  A)
   4R            
  done clear
  B)
   \[\frac{R}{3}\]
  done clear
  C)
   \[\frac{R}{4}\]
  done clear
  D)
   \[\frac{R}{5}\]
  done clear
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• question_answer19) The instrument used by doctors for endoscopy works on the principle of
  A)
   total internal reflection
  done clear
  B)
   reflection
  done clear
  C)
   refraction
  done clear
  D)
   none of the above
  done clear
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• question_answer20) A meter stick is held vertically with one end on the floor and is then allowed to fall. Assuming that the end on the floor the stick does not slip, the velocity of the other end when it hits the floor, will be
  A)
   10.8 m/s      
  done clear
  B)
   5.4 m/s
  done clear
  C)
   2.5 m/s       
  done clear
  D)
   none of these
  done clear
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• question_answer21) If the coefficient of static friction between the tyres and road is 0.5, what is the shortest distance in which an automobile can be stopped when travelling at 72 km/h?
  A)
   50 m          
  done clear
  B)
   60 m
  done clear
  C)
   40.8 m        
  done clear
  D)
   80.16 m
  done clear
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• question_answer22) A bullet fired at an angle of \[{{30}^{o}}\] with the horizontal hits the ground 3 km away. By adjusting its angle of projection, can one hope to hit a target 5 km, away. Assume the muzzle speed to be same and the air resistance is negligible
  A)
   possible to hit a target 5 km away
  done clear
  B)
   not possible to hit a target 5 km away
  done clear
  C)
   prediction is not possible
  done clear
  D)
   none of the above
  done clear
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• question_answer23) Two springs of spring constant 1500 N/m and 3000 N/m respectively are stretched with the same force. They will have potential energy in ratio
  A)
   1 : 2        
  done clear
  B)
   2 : 1
  done clear
  C)
   1 : 4        
  done clear
  D)
   4 : 1
  done clear
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• question_answer24) The elastic energy stored in a wire of Youngs modulus Y is
  A)
   \[\frac{1}{2}Y\times \] stress x strain \[\times \] volume
  done clear
  B)
   \[\frac{{{(stress)}^{2}}\times volume}{2Y}\]
  done clear
  C)
   stress \[\times \]strain \[\times \] volume
  done clear
  D)
   \[Y\times \frac{{{(stress)}^{2}}}{volume}\]
  done clear
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• question_answer25) A soap bubble A of radius 0.03 and another bubble B of radius 0.04 m are brought together so that the combined bubble has a common interface of radius r, then the value of r is
  A)
   0.24m        
  done clear
  B)
   0.48m
  done clear
  C)
   0.12m        
  done clear
  D)
   none of these
  done clear
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• question_answer26) An air bubble of radius \[{{10}^{-2}}\] m is rising up at a steady rate of \[2\times {{10}^{-3}}\]m/s through a liquid of ,density \[1.5\times {{10}^{3}}kg/{{m}^{3}}\], the coefficient of viscosity neglecting the density of air, will be \[(g=10\,\,m/{{s}^{2}})\]
  A)
   23.2 units      
  done clear
  B)
   83.5 units
  done clear
  C)
   334 units       
  done clear
  D)
   167 units
  done clear
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• question_answer27) A Carnot reversible engine converts 1/6 of heat input into work. When the temperature of the sink is reduced by 62 K, the efficiency of Carnots cycle becomes 1/3. The temperature of the source and sink will be
  A)
   372 K, 310 K
  done clear
  B)
   181 K, 150 K
  done clear
  C)
   472 K, 410 K
  done clear
  D)
   none of the above
  done clear
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• question_answer28) The ratio of the coefficient of thermal conductivity of two different materials is 5 : 3. If the thermal resistance of the rods of same thickness of these materials is same, then the ratio of the length of these rods will be
  A)
   3 : 5         
  done clear
  B)
   5 : 3
  done clear
  C)
   3 : 4          
  done clear
  D)
   3 : 2
  done clear
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• question_answer29) Compressional wave pulses are sent to the bottom of sea from a ship and the echo is heard after 2 s. If bulk modulus of elasticity of water is \[2\times {{10}^{9}}N/{{m}^{2}}\] and mean temperature is \[{{4}^{o}}C\], the depth of the sea will be
  A)
   1014 m       
  done clear
  B)
   1414 m
  done clear
  C)
   2828 m       
  done clear
  D)
   none of these
  done clear
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• question_answer30) Sound waves of \[f=600\] Hz fall normally on a perfectly reflecting wall. The shortest distance from the wall at which all particles will have maximum amplitude of vibration will be (speed of sound = 300 m/s)
  A)
   \[\frac{7}{8}\]m            
  done clear
  B)
   \[\frac{3}{8}\]m
  done clear
  C)
   \[\frac{1}{8}\]m            
  done clear
  D)
   \[\frac{1}{4}\]m
  done clear
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• question_answer31) A pipe closed at one end produces a fundamental note of 412 Hz. It is cut into two pieces of equal length the fundamental notes produced by the two pieces are
  A)
   824 Hz, 1648 Hz
  done clear
  B)
   412 Hz, 824 Hz
  done clear
  C)
   206 Hz, 412 Hz
  done clear
  D)
   216 Hz, 824 Hz
  done clear
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• question_answer32) The refractive index of water and glycerine are 1.33 and 1.47 respectively. What is the critical angle for a light ray going from the later to the former?
  A)
   \[{{60}^{o}}48\]
  done clear
  B)
   \[{{64}^{o}}48\]
  done clear
  C)
   \[{{74}^{o}}48\]
  done clear
  D)
   None of these
  done clear
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• question_answer33) Lenses of power 3 D and -5D are combined to form a compound lens. An object is placed at a distance or 50 cm from this lens. Its image will be formed at a distance from the lens, will be
  A)
   25 cm       
  done clear
  B)
   20 cm
  done clear
  C)
   30 cm         
  done clear
  D)
   40 cm
  done clear
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• question_answer34) If fringes width \[\lambda =5.89\times {{10}^{-5}}cm\] is 0.431 mm and shift of white central fringe on introducing a mica sheet in one path is 1.89 mm. Thickness of the mica sheet will be \[(\mu =1.59)\]
  A)
   \[4.38\times {{10}^{-6}}m\] 
  done clear
  B)
   \[5.38\times {{10}^{-6}}m\]
  done clear
  C)
   \[6.38\times {{10}^{-6}}m\]
  done clear
  D)
   none of these
  done clear
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• question_answer35) A body is orbiting around earth at a mean radius which is two times as greater as the parking orbit of a satellite, the period of body is
  A)
   4 days         
  done clear
  B)
   16 days
  done clear
  C)
   \[2\sqrt{2}\]days       
  done clear
  D)
   64 days
  done clear
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• question_answer36) A radioactive substance has half-life of 60 min. During 3 h, the fraction of the substance that has to be decayed, will be
  A)
   87.5%        
  done clear
  B)
   52.5%
  done clear
  C)
   25.5%       
  done clear
  D)
   8.5%
  done clear
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• question_answer37) Voltage in the secondary coil of a transformer does not depend upon
  A)
   frequency of the source
  done clear
  B)
   voltage in the primary coil
  done clear
  C)
   ratio of number of turns in the two coils
  done clear
  D)
   both [b] and [c]
  done clear
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• question_answer38) When n-p-n transistor is used as an amplifier
  A)
   electrons move from emitter to base
  done clear
  B)
   electrons move from base to emitter
  done clear
  C)
   electrons move from collector to base
  done clear
  D)
   holes move from base to emitter
  done clear
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• question_answer39) \[_{7}{{N}^{14}}\] is bombarded with \[_{2}H{{e}^{4}}\]. The resulting nucleus is \[_{8}{{O}^{17}}\] with the emission of
  A)
   neutrino       
  done clear
  B)
   antineutrino
  done clear
  C)
   proton         
  done clear
  D)
   neutron
  done clear
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• question_answer40) In the given figure the steady state current in the circuit i&
  A)
   zero            
  done clear
  B)
   0.6 A
  done clear
  C)
   0.9 A           
  done clear
  D)
   1.5 A
  done clear
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• question_answer41) The time of vibration of a dip needle vibration in the vertical plane in the magnetic meridian is 3 s. When the same magnetic needle is made to vibrate in the horizontal plane, the time of vibration is \[3\sqrt{2}\]s. Then angle of dip will be
  A)
   \[{{90}^{o}}\]
  done clear
  B)
   \[{{60}^{o}}\]
  done clear
  C)
   \[{{45}^{o}}\]
  done clear
  D)
   \[{{30}^{o}}\]
  done clear
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• question_answer42) The inductance of the oscillatory circuit of a radio station is 10 mH and its capacitance is 0.25\[\mu F\]. Taking the effect of resistance negligible, wavelength of the broadcasted waves will be (velocity of light\[3.0\times {{10}^{8}}\,m/s,\,\pi =3.14\])
  A)
   \[9.42\times {{10}^{4}}\,m\]
  done clear
  B)
   \[18.8\times {{10}^{4}}\,m\]
  done clear
  C)
   \[4.5\times {{10}^{4}}\,m\]
  done clear
  D)
   none of these
  done clear
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• question_answer43) The \[{{K}_{\alpha }}\] line of singly ionised calcium has a wavelength of 393.3 nm as measured on earth. In the spectrum of one of the observed galaxies, the spectral line is located at 401.8 nm. The speed with which this galaxy is moving away from us, will be
  A)
   7400 m/s
  done clear
  B)
   \[32.4\times {{10}^{2}}\]m/s
  done clear
  C)
   6480 km/s
  done clear
  D)
   none of these
  done clear
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• question_answer44) In a common-base circuit of a transistor, current amplification factor is 0.95. The base current when emitter current is 2 mA, will be
  A)
   0.2 mA        
  done clear
  B)
   0.1 mA
  done clear
  C)
   0.002 mA      
  done clear
  D)
   none of these
  done clear
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• question_answer45) Cathode rays of velocity \[{{10}^{6}}\] m/s describe an approximate circular path of radius 1 m in an electric field 300 V/cm. If the velocity of the cathode rays are doubled. The value of electric field so that the rays describe the same circular path, will be
  A)
   2400 V/cm    
  done clear
  B)
   600 V/cm
  done clear
  C)
   1200 V/cm    
  done clear
  D)
   12000 V/cm
  done clear
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• question_answer46) Light of wavelength 5000 A falling on a sensitive surface. If the surface has received \[{{10}^{-7}}J\] of energy, then the number of photons falling on the surface will be
  A)
   \[5\times {{10}^{11}}\]
  done clear
  B)
   \[2.5\times {{10}^{11}}\]
  done clear
  C)
   \[3\times {{10}^{11}}\]
  done clear
  D)
   none of these
  done clear
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• question_answer47) An X-ray machine is opearated at 40 kV. The short wavelength limit of continuous X-rays will be (\[h=6.63\times {{10}^{-34}}Js,\,c=3\times {{10}^{8}}m/s\]\[,\,e=1.6\times {{10}^{-19}}C\])
  A)
   0.31 \[\overset{o}{\mathop{A}}\,\]         
  done clear
  B)
   0.62 \[\overset{o}{\mathop{A}}\,\]
  done clear
  C)
   0.155 \[\overset{o}{\mathop{A}}\,\]        
  done clear
  D)
   0.62 \[\overset{o}{\mathop{A}}\,\]
  done clear
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• question_answer48) The wavelength of the first spectral line of sodium is 5896\[\overset{o}{\mathop{A}}\,\]. The first excitation potential of sodium atom will be \[(h=6.63\times {{10}^{-34}}Js)\]
  A)
   4.2V          
  done clear
  B)
   3.5V
  done clear
  C)
   2.1V           
  done clear
  D)
   none of these
  done clear
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• question_answer49) If 200 MeV energy is released in the fission of a single nucleus of\[_{92}{{U}^{235}}\]. How many fissions must occur per second to produce a power of 1kW?
  A)
   \[3.125\times {{10}^{13}}\]
  done clear
  B)
   \[6.25\times {{10}^{13}}\]
  done clear
  C)
   \[1.525\times {{10}^{13}}\]
  done clear
  D)
   None of these
  done clear
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• question_answer50) The energy supplied to calculate by state electricity board during an average November day was 40 mkh. If this energy could be obtained by the conversion of matter, how much mass will be annihilated?
  A)
   3.2 g          
  done clear
  B)
   6.4 g
  done clear
  C)
   1.6 g 
  done clear
  D)
   2.5 g
  done clear
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• question_answer51) Which one of the following represents noble gas configuration?
  A)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}\],         \[5{{s}^{2}},5{{p}^{6}}5{{d}^{6}},6{{s}^{2}}\]
  done clear
  B)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}\],        \[5{{s}^{2}},5{{p}^{6}}5{{d}^{1}},6{{s}^{2}}\]
  done clear
  C)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}\], \[5{{s}^{2}}5{{p}^{6}}\]
  done clear
  D)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{f}^{14}}\], \[5{{s}^{2}}5{{p}^{6}}5{{d}^{1}}\]
  done clear
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• question_answer52) The number of unpaired electrons in \[Ni{{(CO)}_{4}}\]is
  A)
   0               
  done clear
  B)
   1
  done clear
  C)
   3              
  done clear
  D)
   4
  done clear
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• question_answer53) Nitrobenzene on treatment with zinc dust and aqueous ammonium chloride gives
  A)
   \[{{C}_{6}}{{H}_{5}}-N=N-{{C}_{6}}{{H}_{5}}\]
  done clear
  B)
   \[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
  done clear
  C)
   \[{{C}_{6}}{{H}_{5}}NO\]
  done clear
  D)
   \[{{C}_{6}}{{H}_{6}}NHOH\]
  done clear
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• question_answer54) Which one of the following is a correct statement?
  A)
   All metal nitrates are insoluble in water
  done clear
  B)
   Solubility depends on temperature
  done clear
  C)
   All metal nitrates are soluble in water
  done clear
  D)
   All metal nitrates are soluble in alcohol
  done clear
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• question_answer55) Methyl-\[\alpha \]-D-glucoside and methyl-\[\beta \]-D glucoside are
  A)
   epimers
  done clear
  B)
   anomers
  done clear
  C)
   enantiomers
  done clear
  D)
   conformational diastereomers
  done clear
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• question_answer56) Which one of the following shows maximum value of paramagnetic behavior?
  A)
   \[{{[Sc{{(CN)}_{6}}]}^{3-}}\]    
  done clear
  B)
   \[{{[Co{{(CN)}_{6}}]}^{3-}}\]
  done clear
  C)
   \[{{[Fe{{(CN)}_{6}}]}^{4-}}\]
  done clear
  D)
   \[{{[Cr{{(CN)}_{6}}]}^{3-}}\]
  done clear
  View Answer play_arrow

• question_answer57) Carbolic acid is
  A)
   \[HCOOH\]
  done clear
  B)
   \[C{{H}_{3}}COOH\]
  done clear
  C)
   \[{{C}_{6}}{{H}_{5}}COOH\]
  done clear
  D)
   \[{{C}_{6}}{{H}_{5}}OH\]
  done clear
  View Answer play_arrow

• question_answer58) The solubility product of \[BaC{{l}_{2}}\] is \[4\times {{10}^{-9}}\]. Its solubility in mol/L is
  A)
   \[4\times {{10}^{-3}}\]       
  done clear
  B)
   \[4\times {{10}^{-9}}\]
  done clear
  C)
   \[1\times {{10}^{-3}}\]       
  done clear
  D)
   \[1\times {{10}^{-9}}\]
  done clear
  View Answer play_arrow

• question_answer59) Which one can differentiate between \[{{C}_{2}}{{H}_{5}}OH\] and \[C{{H}_{3}}OH\]?
  A)
   \[{{H}_{2}}O\]        
  done clear
  B)
   \[N{{a}_{2}}C{{O}_{3}}+{{I}_{2}}\]
  done clear
  C)
   \[N{{H}_{3}}\]
  done clear
  D)
   \[HCl\]
  done clear
  View Answer play_arrow

• question_answer60) Zinc and cold dil. \[HN{{O}_{3}}\] reacts to produce
  A)
   NO          
  done clear
  B)
   \[N{{O}_{2}}\]
  done clear
  C)
   \[N{{H}_{4}}N{{O}_{3}}\]
  done clear
  D)
   \[ZnN{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer61) For the reaction, \[{{H}_{2}}+{{I}_{2}}2HI\], the equilibrium concentration of \[{{H}_{2}},\,{{I}_{2}}\] and HI are 8.0, 3.0 and 28.0 mol/L respectively. The equilibrium constant is
  A)
   28.34         
  done clear
  B)
   32.66
  done clear
  C)
   34.78          
  done clear
  D)
   38.88
  done clear
  View Answer play_arrow

• question_answer62) Tincture of iodine is
  A)
   aqueous solution of \[{{I}_{2}}\]
  done clear
  B)
   solution of \[{{I}_{2}}\] in aqueous KI
  done clear
  C)
   alcoholic solution of \[{{I}_{2}}\]
  done clear
  D)
   aqueous solution of KI
  done clear
  View Answer play_arrow

• question_answer63) The chemical formula of plaster of Paris is
  A)
   \[CaS{{O}_{4}}.\frac{1}{2}{{H}_{2}}O\]
  done clear
  B)
   \[CaS{{O}_{4}}.\,{{H}_{2}}O\]
  done clear
  C)
   \[CaS{{O}_{4}}.\,2{{H}_{2}}O\]
  done clear
  D)
   \[CaS{{O}_{4}}.\,3{{H}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer64) Which one of the following has square planar structure?
  A)
   \[{{[Ni{{(CN)}_{4}}]}^{2-}}\]
  done clear
  B)
   \[[Ni{{(CO)}_{4}}]\]
  done clear
  C)
   \[{{[Ni{{(Cl)}_{4}}]}^{2-}}\]
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer65) The oxidation number of chromium in potassium dichromate is
  A)
   +2            
  done clear
  B)
   +4
  done clear
  C)
   +6            
  done clear
  D)
   +8
  done clear
  View Answer play_arrow

• question_answer66) The electronic configuration of most electronegative elements is
  A)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{5}}\]
  done clear
  B)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{4}},3{{s}^{1}}\]
  done clear
  C)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}}3{{p}^{1}}\]
  done clear
  D)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}\]
  done clear
  View Answer play_arrow

• question_answer67) The molecular formula \[{{C}_{3}}{{H}_{9}}N\] cannot represent
  A)
   Famine      
  done clear
  B)
   \[{{2}^{o}}\]amine
  done clear
  C)
   \[{{3}^{o}}\]amine      
  done clear
  D)
   quaternary salt
  done clear
  View Answer play_arrow

• question_answer68) The bond length between \[C-C\] bond in \[s{{p}^{2}}\] hybridised molecule is
  A)
   \[1.2\overset{o}{\mathop{A}}\,\]          
  done clear
  B)
   \[1.39\overset{o}{\mathop{A}}\,\]
  done clear
  C)
   \[1.33\overset{o}{\mathop{A}}\,\]         
  done clear
  D)
   \[1.54\overset{o}{\mathop{A}}\,\]
  done clear
  View Answer play_arrow

• question_answer69) The energy ratio of a photon of wavelength \[3000\overset{o}{\mathop{A}}\,\] and \[6000\overset{o}{\mathop{A}}\,\] is
  A)
   1 : 1          
  done clear
  B)
   2 : 1
  done clear
  C)
   1 : 2          
  done clear
  D)
   1 : 4
  done clear
  View Answer play_arrow

• question_answer70) Gas equation \[PV=nRT\] is obeyed by ideal gas in
  A)
   adiabatic process
  done clear
  B)
   isothermal process
  done clear
  C)
   both [a] and [b]
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer71) Clemmensens reduction of ketones is carried out in
  A)
   \[LiAl{{H}_{4}}\] in \[{{H}_{2}}O\]
  done clear
  B)
   glycol and \[KOH\]
  done clear
  C)
   Zn-Hg and \[HCl\]
  done clear
  D)
   \[{{H}_{2}}\] and Pd catalyst
  done clear
  View Answer play_arrow

• question_answer72) The planar structure of \[B{{F}_{3}}\] can be explained by the fact that \[B{{F}_{3}}\] is
  A)
   sp-hybridised  
  done clear
  B)
   \[s{{p}^{2}}\]-hybridised
  done clear
  C)
   \[s{{p}^{3}}\]-hybridised  
  done clear
  D)
   \[s{{p}^{3}}\] hybridized
  done clear
  View Answer play_arrow

• question_answer73) Reduction of aniline with acetyl chloride in presence of \[NaOH\] produce
  A)
   aniline hydrochloride
  done clear
  B)
   acetanilide
  done clear
  C)
   p-chloroaniline
  done clear
  D)
   a red dye
  done clear
  View Answer play_arrow

• question_answer74) Which of the following compounds has the highest boiling point?
  A)
   \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl\]
  done clear
  B)
   \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Cl\]
  done clear
  C)
   \[C{{H}_{3}}CH(C{{H}_{3}})C{{H}_{2}}Cl\]
  done clear
  D)
   \[{{(C{{H}_{3}})}_{3}}CCl\]
  done clear
  View Answer play_arrow

• question_answer75) An unknown compound D first oxidised to aldehyde and then acetic acid by a dilute solution of \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] and \[{{H}_{2}}S{{O}_{4}}\]. The compound D is
  A)
   \[C{{H}_{3}}OH\]
  done clear
  B)
   \[{{C}_{2}}{{H}_{5}}OH\]
  done clear
  C)
   \[C{{H}_{3}}C{{H}_{2}}COOH\]
  done clear
  D)
  \[C{{H}_{2}}C{{H}_{2}}CHO\]
  done clear
  View Answer play_arrow

• question_answer76) Which of the following is not possible?
  A)
   \[n=2,\,l=1,\,\,m=0\]
  done clear
  B)
   \[n=2,\,l=0,\,\,m=-1\]
  done clear
  C)
   \[n=3,\,l=0,\,\,m=0\]
  done clear
  D)
   \[n=3,\,l=1,\,\,m=-1\]
  done clear
  View Answer play_arrow

• question_answer77) A gas expands isothermally against a constant external pressure of 1 atm from a volume of \[10\,\,d{{m}^{3}}\]to a volume of \[20\,\,d{{m}^{3}}\]. It absorbs 300 J of thermal energy from its surroundings. The \[\Delta U\] is
  A)
   -312J        
  done clear
  B)
   +123J
  done clear
  C)
   -213J        
  done clear
  D)
   + 231 J
  done clear
  View Answer play_arrow

• question_answer78) Phenol is more acidic than alcohol because
  A)
   phenol is more soluble in polar solvents
  done clear
  B)
   alcohol does not lose hydrogen atom
  done clear
  C)
   phenoxide ion is stabilised by resonance
  done clear
  D)
   phenoxide ion do not exhibit resonance
  done clear
  View Answer play_arrow

• question_answer79) The element having highest electron affinity is
  A)
   bromine       
  done clear
  B)
   iodine
  done clear
  C)
   fluorine      
  done clear
  D)
   chlorine
  done clear
  View Answer play_arrow

• question_answer80) Bakelite is prepared by the reaction between
  A)
  ­ phenol and formaldehyde
  done clear
  B)
   urea and formaldehyde
  done clear
  C)
   ethylene and glycol
  done clear
  D)
   ­tetramethylene and glycol
  done clear
  View Answer play_arrow

• question_answer81) Which one of the following is a conjugated protein?
  A)
   Phosphoprotein
  done clear
  B)
   Glycoprotein
  done clear
  C)
   Chromoprotein
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer82) Iodine test is shown by
  A)
   glucose        
  done clear
  B)
   starch
  done clear
  C)
   glycogen       
  done clear
  D)
   polypeptide
  done clear
  View Answer play_arrow

• question_answer83) A fruity smell is obtained by the reaction of ethanol with
  A)
   \[C{{H}_{3}}COC{{H}_{3}}\]
  done clear
  B)
   \[PC{{l}_{5}}\]
  done clear
  C)
   \[C{{H}_{3}}COOH\]
  done clear
  D)
   \[C{{H}_{3}}CHO\]
  done clear
  View Answer play_arrow

• question_answer84) Cyanide process is used for extraction of
  A)
   Ag            
  done clear
  B)
   Ni
  done clear
  C)
   Pt             
  done clear
  D)
   Zn
  done clear
  View Answer play_arrow

• question_answer85) An acid solution of 0.005 M has a pH of 5. The degree of ionisation of acid is
  A)
   \[0.1\times {{10}^{-2}}\]
  done clear
  B)
   \[0.2\times {{10}^{-2}}\]
  done clear
  C)
   \[0.5\times {{10}^{-4}}\]
  done clear
  D)
   \[0.6\times {{10}^{-6}}\]
  done clear
  View Answer play_arrow

• question_answer86) Which metal gives hydrogen gas on heating with hot concentrated alkali?
  A)
   Ag            
  done clear
  B)
   Ni
  done clear
  C)
   Zn            
  done clear
  D)
   Cu
  done clear
  View Answer play_arrow

• question_answer87) The conversion of ethyl chloride into diethyl ether takes place by
  A)
   Williamsons synthesis
  done clear
  B)
   Perkins reaction
  done clear
  C)
   Wurtz reaction
  done clear
  D)
   Grignard reaction
  done clear
  View Answer play_arrow

• question_answer88) \[CHC{{l}_{3}}+{{C}_{6}}{{H}_{5}}N{{H}_{2}}+3NaOH\xrightarrow{{}}A\]\[+3B+3C\] In the above reaction, the product A is
  A)
   chlorobenzene 
  done clear
  B)
   phenyl isocyanide
  done clear
  C)
   phenyl cyanide
  done clear
  D)
   phenyl chloride
  done clear
  View Answer play_arrow

• question_answer89) A gas is found to have a formula \[{{[CO]}_{x}}\]. Its vapour density is 70, the \[x\] is
  A)
   3.0            
  done clear
  B)
   3.5
  done clear
  C)
   5.0            
  done clear
  D)
   6.5
  done clear
  View Answer play_arrow

• question_answer90) Which of the following is used as purgative?
  A)
   \[HgS\]
  done clear
  B)
   \[H{{g}_{2}}C{{l}_{2}}\]
  done clear
  C)
   \[HgC{{l}_{2}}\]
  done clear
  D)
   \[ZnS{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer91) Least stable oxide of chlorine is
  A)
   \[C{{l}_{2}}O\]
  done clear
  B)
   \[Cl{{O}_{2}}\]
  done clear
  C)
   \[C{{l}_{2}}{{O}_{7}}\]
  done clear
  D)
   \[Cl{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer92) The sides of safety matches contains
  A)
   red phosphorus + sand powder
  done clear
  B)
   \[{{P}_{4}}{{S}_{3}}\]
  done clear
  C)
   \[C{{a}_{3}}{{(PO)}_{4}}+\] glass pieces
  done clear
  D)
   \[KCl{{O}_{3}},\,KN{{O}_{3}}\], sulphur + antimony
  done clear
  View Answer play_arrow

• question_answer93) Chemically aspirin is known as
  A)
   salicylic acid
  done clear
  B)
   salicylaldehyde
  done clear
  C)
   2-acetoxybenzoic acid
  done clear
  D)
   phenyl salicylate
  done clear
  View Answer play_arrow

• question_answer94) Gun metal is
  A)
   Cu + Zn       
  done clear
  B)
   Cu + Sn + Zn
  done clear
  C)
   Cu + Sn       
  done clear
  D)
   Zn + Sn
  done clear
  View Answer play_arrow

• question_answer95) Which cannot be oxidised by \[{{H}_{2}}{{O}_{2}}\]?
  A)
   \[N{{a}_{2}}S{{O}_{3}}\]
  done clear
  B)
   \[PbS\]
  done clear
  C)
   KI      
  done clear
  D)
   \[{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer96) The gas not absorbed by coconut charcoal is
  A)
   He            
  done clear
  B)
   Ne
  done clear
  C)
   Ar            
  done clear
  D)
   Kr
  done clear
  View Answer play_arrow

• question_answer97) KI and \[CuS{{O}_{4}}\] solutions on mixing produce
  A)
   \[C{{u}_{2}}{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]
  done clear
  B)
   \[C{{u}_{2}}{{I}_{2}}+{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]
  done clear
  C)
   \[Cu{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]
  done clear
  D)
   \[Cu{{I}_{2}}+{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer98) Vitamin \[{{B}_{12}}\] contains
  A)
   Co         
  done clear
  B)
   Mn
  done clear
  C)
   Mg           
  done clear
  D)
   Fe
  done clear
  View Answer play_arrow

• question_answer99) Water glass is
  A)
   glass made of water
  done clear
  B)
   sodium silicate
  done clear
  C)
   calcium formate
  done clear
  D)
   pyrex glass.
  done clear
  View Answer play_arrow

• question_answer100) Purification of alumina takes place by
  A)
   Bosch process
  done clear
  B)
   Halls process
  done clear
  C)
   Hoopes process
  done clear
  D)
   Quartation process
  done clear
  View Answer play_arrow

• question_answer101) Incubation period of Plasmodium vivax is
  A)
   14 days       
  done clear
  B)
   30 days
  done clear
  C)
   40 days
  done clear
  D)
   32 days
  done clear
  View Answer play_arrow

• question_answer102) 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_answer103) In cockroach, excretion occurs through
  A)
   nephral glands
  done clear
  B)
   nephridia
  done clear
  C)
   malpighian tubules
  done clear
  D)
   parotid gland
  done clear
  View Answer play_arrow

• question_answer104) antibodies are
  A)
   lipids
  done clear
  B)
   carbohydrates
  done clear
  C)
   immunoglobulins
  done clear
  D)
   antiviral particles
  done clear
  View Answer play_arrow

• question_answer105) Which of the following is a viral disease?
  A)
   TB
  done clear
  B)
   Diphtheria
  done clear
  C)
   Small pox
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer106) In 28 days human ovarian cycle, the ovulation takes place typically on
  A)
   day 1st of cycle
  done clear
  B)
   day 6th of cycle
  done clear
  C)
   day 10th of cycle
  done clear
  D)
   day 14th of cycle
  done clear
  View Answer play_arrow

• question_answer107) Trypsinogen is converted to active trypsin by
  A)
   enterokinase   
  done clear
  B)
   secretins
  done clear
  C)
   enterocrinin    
  done clear
  D)
   ptylin
  done clear
  View Answer play_arrow

• question_answer108) Bone marrow is absent in
  A)
   reptiles        
  done clear
  B)
   amphibians
  done clear
  C)
   aves          
  done clear
  D)
   mammals
  done clear
  View Answer play_arrow

• question_answer109) Fluid mosaic model of cell membrane was given by
  A)
   Singer and Tatum
  done clear
  B)
   Watson
  done clear
  C)
   Robertson
  done clear
  D)
   Singer and Nicolson
  done clear
  View Answer play_arrow

• question_answer110) Which of the following is a connecting link between glycolysis and Krebs cycle?
  A)
   Citric acid
  done clear
  B)
   Pyruvic acid
  done clear
  C)
   Acetyl Co-A
  done clear
  D)
   Glucose
  done clear
  View Answer play_arrow

• question_answer111) Lock and key model of enzyme action was proposed by
  A)
   Kuhne        
  done clear
  B)
   Koshland
  done clear
  C)
   Buchner       
  done clear
  D)
   Fischer
  done clear
  View Answer play_arrow

• question_answer112) Which of the following process needs bacteriophage?
  A)
   Transduction   
  done clear
  B)
   Translation
  done clear
  C)
   Transformation
  done clear
  D)
   Conjugation
  done clear
  View Answer play_arrow

• question_answer113) Purkinje fibres are present in
  A)
   brain          
  done clear
  B)
   heart
  done clear
  C)
   blood          
  done clear
  D)
   lungs
  done clear
  View Answer play_arrow

• question_answer114) Dissociation curve of haemoglobin is
  A)
   sigmoid        
  done clear
  B)
   parabolic
  done clear
  C)
   straight line    
  done clear
  D)
   hyperbolic
  done clear
  View Answer play_arrow

• question_answer115) The function of Henles loop is
  A)
   passage of urine
  done clear
  B)
   formation of urine
  done clear
  C)
   conservation of water
  done clear
  D)
   filteration of water
  done clear
  View Answer play_arrow

• question_answer116) Parathormone is responsible for
  A)
   controlling calcium level in blood
  done clear
  B)
   decreasing calcium level in blood
  done clear
  C)
   filteration in nephron
  done clear
  D)
   increasing absorption of water
  done clear
  View Answer play_arrow

• question_answer117) Hinge joint is present between
  A)
   humerus and ulna
  done clear
  B)
   femur and pectoral girdle
  done clear
  C)
   humerus and pelvic girdle
  done clear
  D)
   all of the above
  done clear
  View Answer play_arrow

• question_answer118) Pancreas secretes pancreatic juice on stimulation by
  A)
   renin          
  done clear
  B)
   gastrin
  done clear
  C)
   secretin       
  done clear
  D)
   DDK
  done clear
  View Answer play_arrow

• question_answer119) Which of the following is not a granulocyte?
  A)
   Basophils      
  done clear
  B)
   Monocytes
  done clear
  C)
   Acidophils     
  done clear
  D)
   Neutrophils
  done clear
  View Answer play_arrow

• question_answer120) Nerve impulse initiates with the movements of
  A)
   \[{{K}^{+}}\]
  done clear
  B)
   \[N{{a}^{+}}\]
  done clear
  C)
   \[C{{a}^{+}}\]
  done clear
  D)
   \[M{{g}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer121) When an animal has both sexes (male and female), it is called
  A)
   intersex       
  done clear
  B)
   super male
  done clear
  C)
   gynandromorph
  done clear
  D)
   super female
  done clear
  View Answer play_arrow

• question_answer122) The contraction of gall bladder is due to
  A)
   gastrin
  done clear
  B)
   cholecystokinin
  done clear
  C)
   secretin
  done clear
  D)
   kinase
  done clear
  View Answer play_arrow

• question_answer123) Which of the following has discoidal placenta?
  A)
   Rabbit         
  done clear
  B)
   Deer
  done clear
  C)
   Sheep         
  done clear
  D)
   Pig
  done clear
  View Answer play_arrow

• question_answer124) DNA replication takes place in
  A)
   \[{{G}_{1}}\]-phase      
  done clear
  B)
   S-phase
  done clear
  C)
   \[{{G}_{2}}\]-phase      
  done clear
  D)
   Prophase
  done clear
  View Answer play_arrow

• question_answer125) Which of the following is a transparent tissue?
  A)
   Tendon
  done clear
  B)
   Hyaline cartilage
  done clear
  C)
   Fibrous cartilage
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer126) A nucleoside is
  A)
   purine/pyramidine + phosphate
  done clear
  B)
   purine/pyramidine + sugar
  done clear
  C)
   pyramidine + purine + phosphate
  done clear
  D)
   purine + sugar + phosphate
  done clear
  View Answer play_arrow

• question_answer127) Floral formula  is of family
  A)
   Papilionasae   
  done clear
  B)
   Mimosoideae
  done clear
  C)
   Ceasalpinoidae
  done clear
  D)
   Malvaceae
  done clear
  View Answer play_arrow

• question_answer128) Formation of diploid embryosac from diploid vegetative structure, eg, nucellus or integument etc., without meiosis is called
  A)
   apospory
  done clear
  B)
   apomixis
  done clear
  C)
   diplospory
  done clear
  D)
   adventive polyembryony
  done clear
  View Answer play_arrow

• question_answer129) Process of water exudation through hydathodes is known as
  A)
   guttation
  done clear
  B)
   transpiration
  done clear
  C)
   evaporation
  done clear
  D)
   bleeding
  done clear
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• question_answer130) Insectivorous plants grow in
  A)
   nitrogen rich soil
  done clear
  B)
   nitrogen deficient soil
  done clear
  C)
   potassium deficient soil
  done clear
  D)
   carbohydrate rich soil
  done clear
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• question_answer131) Fungus without mycelium is
  A)
   Puccinia
  done clear
  B)
   Rhizopus
  done clear
  C)
   Saccharomyces
  done clear
  D)
   Mucor
  done clear
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• question_answer132) The organelles involved in photorespiration are
  A)
   glyoxisome, chloroplast and mitochondria
  done clear
  B)
   chloroplast, peroxisome and glyoxisome
  done clear
  C)
   mitochondria, peroxisome and glyoxisome
  done clear
  D)
   chloroplast, mitochondria and peroxisome
  done clear
  View Answer play_arrow

• question_answer133) Floridean starch is found in
  A)
   Chlorophyceae
  done clear
  B)
   Myxophyceae
  done clear
  C)
   Phaeophyceae
  done clear
  D)
   Rhodophyceae
  done clear
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• question_answer134) The hormone reducing transpiration rate by inducing stomatal closure is
  A)
   ABA
  done clear
  B)
   ethylene
  done clear
  C)
   cytokinin
  done clear
  D)
   auxin
  done clear
  View Answer play_arrow

• question_answer135) The pigment involved in photomorphogenetic movements is
  A)
   cytochrome
  done clear
  B)
   phytochrome
  done clear
  C)
   chromatin
  done clear
  D)
   vernalin         
  done clear
  View Answer play_arrow

• question_answer136) First \[C{{O}_{2}}\] receptor in \[{{C}_{4}}\] plants is
  A)
   PGA          
  done clear
  B)
   PEP
  done clear
  C)
   RuBP        
  done clear
  D)
   OAA
  done clear
  View Answer play_arrow

• question_answer137) The components of an ecosystem are
  A)
  , trees and weeds
  done clear
  B)
   plants and animals
  done clear
  C)
   man and plants
  done clear
  D)
   biotic and abiotic
  done clear
  View Answer play_arrow

• question_answer138) The 10% energy transfer law of food chain was given by
  A)
   Lederberg     
  done clear
  B)
   Lindmann
  done clear
  C)
   Weismann    
  done clear
  D)
   Lindley
  done clear
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• question_answer139) Reaction centre of photosystem-I in green plants is
  A)
   \[{{P}_{680}}~\]
  done clear
  B)
   \[{{P}_{690}}~\]
  done clear
  C)
   \[{{P}_{700}}~\]
  done clear
  D)
   \[{{P}_{780}}~\]
  done clear
  View Answer play_arrow

• question_answer140) Double fertilization is found in
  A)
   bryophytes
  done clear
  B)
   angiosperms
  done clear
  C)
   gymnosperms
  done clear
  D)
   pteridophytes
  done clear
  View Answer play_arrow

• question_answer141) A sporangium derived from a single cell is called
  A)
   leptosporangiate
  done clear
  B)
   eusporangiate
  done clear
  C)
   heterosporangiate
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer142) Root cap is not found in
  A)
   mesophytes    
  done clear
  B)
   xerophytes
  done clear
  C)
   hydrophytes   
  done clear
  D)
   halophytes
  done clear
  View Answer play_arrow

• question_answer143) The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to purchase fresh hybrid seed every year because
  A)
   hybrid vigour is not long standing due to inbreeding depression
  done clear
  B)
   they are not allowed to grow their own seed
  done clear
  C)
   it is always associated with increased heterozygosity
  done clear
  D)
   government has accepted Dunkels proposals
  done clear
  View Answer play_arrow

• question_answer144) Genetic engineering is related with
  A)
   eugenics       
  done clear
  B)
   euphenics
  done clear
  C)
   euthenics     
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer145) Floating roots are the characteristic feature of
  A)
   Viscum        
  done clear
  B)
   Cuscuta
  done clear
  C)
   Vanda         
  done clear
  D)
   Jussiaea
  done clear
  View Answer play_arrow

• question_answer146) The diameter of Z-DNA is
  A)
   34 \[\overset{o}{\mathop{A}}\,\]
  done clear
  B)
   20 \[\overset{o}{\mathop{A}}\,\]
  done clear
  C)
   18 \[\overset{o}{\mathop{A}}\,\]
  done clear
  D)
   45 \[\overset{o}{\mathop{A}}\,\]
  done clear
  View Answer play_arrow

• question_answer147) The genes, which remain confined to differential region of Y chromosome, are
  A)
   autosomal genes
  done clear
  B)
   holandric genes
  done clear
  C)
   sex linked genes
  done clear
  D)
   mutant genes
  done clear
  View Answer play_arrow

• question_answer148) The hormone responsible for ripening of fruits is
  A)
   ethylene
  done clear
  B)
   cytokinin
  done clear
  C)
   auxin                       
  done clear
  D)
   ABA
  done clear
  View Answer play_arrow

• question_answer149) Select the correct statement.
  A)
   legumes are incapable of fixing nitrogen
  done clear
  B)
   legumes fix nitrogen through bacteria living in fruits root
  done clear
  C)
   legumes fix nitrogen only by bacteria present in nodules
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer150) The part of cotton producing pure cellulose is
  A)
   root hair
  done clear
  B)
   leaf hair
  done clear
  C)
   seed hair
  done clear
  D)
   stem hair
  done clear
  View Answer play_arrow