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Solved papers for BVP Medical BVP Medical Solved Paper-2003

done BVP Medical Solved Paper-2003

  • question_answer1) Deuteron and alpha particle in air are at separation \[1\overset{0}{\mathop{A}}\,\]. The magnitude of electric field intensity on \[\alpha \]-particle due to deuteron is :

    A) \[5.76\times {{10}^{11}}N/C\]

    B) \[1.44\times {{10}^{11}}N/C\]

    C) \[2.828\times {{10}^{11}}N/C\]

    D) zero

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  • question_answer2) If \[{{E}_{1}}\] be the electric field strength of a short dipole at a point on its axial line and \[{{E}_{2}}\] that on the equatorial line at the same distance, then :

    A) \[{{E}_{1}}={{E}_{2}}\]

    B) \[{{E}_{1}}=2{{E}_{2}}\]

    C) \[{{E}_{1}}=2{{E}_{2}}\]

    D) none of these

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  • question_answer3) 20 amp current is flowing in a long straight wire. The intensity of magnetic field at a distance of 10 cm from the wire, will be :

    A) \[4\times {{10}^{-5}}wb/{{m}^{2}}\]

    B) \[2\times {{10}^{-5}}wb/{{m}^{2}}\]

    C) \[3\times {{10}^{-5}}wb/{{m}^{2}}\]

    D) \[8\times {{10}^{-5}}wb/{{m}^{2}}\]

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  • question_answer4) An electron having charge \[1.6\times {{10}^{-19}}C\]and mass \[9\times {{10}^{-31}}\] kg is moving with\[4\times {{10}^{6}}\]m/s speed in a magnetic field of \[2\times {{10}^{-1}}\]tesla in a circular orbit. The force acting on an electron and the radius of circular orbit will be:

    A) \[1.28\times {{10}^{14}}N,1.1\times {{10}^{-3}}m\]

    B) \[1.28\times {{10}^{15}}N,1.2\times {{10}^{-12}}m\]

    C) \[1.28\times {{10}^{-13}}N,1.1\times {{10}^{-4}}m\]

    D) none of these

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  • question_answer5) The capacity of a condenser is \[4\times {{10}^{-6}}\]farad and its potential is 100 volts. The energy released on discharging it fully will be :

    A) 0.04 J

    B) 0.02 J

    C) 0.025 J

    D) 0.05 J

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  • question_answer6) The electric potential at the surface of anatomic nucleus (Z = 50) of radius\[9.0\times {{10}^{-13}}cm\] is :

    A) \[9\times {{10}^{5}}volt\]

    B) \[8\times 106\,volt\]

    C) 80 volt

    D) 9 volt

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  • question_answer7) The half-life of radium is 1620 years and its atomic weight is 226 kg per kilo mol. The number of atoms that will decay from its 1 gm sample per second will be : (Avogadros number \[N=6.023\times {{10}^{23}}\] atoms/mol)

    A) \[3.61\times {{10}^{10}}\]

    B) \[3.6\times {{10}^{12}}\]

    C) \[3.11\times {{10}^{15}}\]

    D) \[31.1\times {{10}^{15}}\]

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  • question_answer8) One milligram of matter converted into energy, will give :

    A) 9 joule

    B) \[9\times {{10}^{3}}\] joule

    C) \[9\times {{10}^{5}}\]joule

    D) \[9\times {{10}^{10}}\] joule

    View Answer play_arrow
  • question_answer9) In a simple microscope, if the final image is located at 25 cm from the eye placed close to the lens, then the magnifying power is :

    A) \[\frac{25}{f}\]

    B) \[1+\frac{25}{f}\]

    C) \[\frac{f}{25}\]

    D) \[\frac{f}{25}+1\]

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  • question_answer10) A black body at 200 K is found to exit maximum energy at a wavelength\[14\mu m.\]When its temperature is raised to 1000 K, then wavelength at which maximum energy emitted is :

    A) 14 mm

    B) 7\[\mu m\]

    C) 2.8 \[\mu m\]

    D) 28 mm

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  • question_answer11) The ratio of thermal conductivity of two rods of different material is 5 : 4. The two rods of same area of cross-section and same thermal resistance will have the lengths in the ratio :

    A) 4 : 5

    B) 9: 1

    C) 1 : 9

    D) 5: 4

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  • question_answer12) Joule second is the unit of :

    A) momentum

    B) angular momentum

    C) work

    D) pressure

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  • question_answer13) The two slits at a distance of 1 mm are illuminated by the light of wavelength\[6.5\times {{10}^{-7}}\]m. The interference fringes are observed on a screen placed at a distance of 1 m. The distance between third dark fringe and fifth bright fringe will be :

    A) 0.65 cm

    B) 4.8 mm

    C) 1.63 mm

    D) 3.25 cm

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  • question_answer14) Two thin lenses, one of focal length + 60 cm and the other of focal length -20 cm are put in contact, the combined focal length is :

    A) 15 cm

    B) -15 cm

    C) -30 cm

    D) 30 cm

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  • question_answer15) When light travels from one medium to the other medium of which the refractive index is different, then which of the following will change :

    A) frequency, wavelength and velocity

    B) frequency and wavelength

    C) frequency and velocity

    D) wavelength and velocity

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  • question_answer16) In the circuit shown in the figure, the potential difference across the 4.5\[\mu F\]capacitor is :

    A) \[\frac{8}{3}volt\]

    B) 4 volt

    C) 6 volt

    D) 8 volt

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  • question_answer17) When \[_{92}{{U}^{235}}\]undergoes fission, 0.1% its original mass is changed into energy. How much energy is released if 1 kg of\[_{92}{{U}^{235}}\] undergoes fission?

    A) \[9\times {{10}^{10}}J\]

    B) \[9\times {{10}^{11}}J\]

    C) \[9\times {{10}^{12}}J\]

    D) \[9\times {{10}^{13}}J\]

    View Answer play_arrow
  • question_answer18) The equivalent resistance of the arrangement of resistances shown in the given figure between points P and Q is :

    A) 6\[\Omega \]

    B) 8\[\Omega \]

    C) 24\[\Omega \]

    D) 16\[\Omega \]

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  • question_answer19) A cricketer hits a ball with a velocity 25 m/s at 60? above the horizontal. How far above the ground ,it passes over a fielder 50 m from the bat (assume the ball is struck very close to the ground) :

    A) 8.2 m

    B) 9.0 m

    C) 11.6 m

    D) 12.7 m

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  • question_answer20) It is easier to roll a barrel than pull it along the road. This statement is :

    A) not possible

    B) uncertain

    C) false

    D) true

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  • question_answer21) The diameter of brass road is 4 mm. Youngs modulus of brass is\[9\times {{10}^{9}}N/{{m}^{2}}.\]The force required to stretch 0.1% of its length is :

    A) 360\[\pi \]N

    B) 36 N

    C) \[36\pi \times {{10}^{5}}N\]

    D) \[144\pi \times {{10}^{3}}N\]

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  • question_answer22) A beam of ions enters normallyintoauniform magnetic field of\[4\times {{10}^{2}}\]tesla with velocity of \[2\times {{10}^{5}}\] m/s. If the specific charge of the ion is \[5\times {{10}^{7}}\] C/kg, then the radius of the circular path described will be :

    A) 0.10m

    B) 0.06 m

    C) 0.20 m

    D) 0.25 m

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  • question_answer23) Par sec is unit of :

    A) angle

    B) velocity

    C) time

    D) distance

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  • question_answer24) If a given mass of gas occupies a volume of 10 cc at 1 atmospheric pressure and temperature \[100{}^\circ C\]. What will be its volume at 4 atmospheric pressure, the temperature being the same?

    A) 100 cc

    B) 400 cc

    C) 104 cc

    D) 2.5 cc

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  • question_answer25) Ultraviolet radiation of 6.2 eV falls on an aluminium foil surface. Work function is 4.2 eV. The K.E. of the fastest electron emitted approximately :

    A) \[3.2\times {{10}^{-21}}J\]

    B) \[3.2\times {{10}^{-19}}J\]

    C) \[3.2\times {{10}^{-15}}J\]

    D) \[3.2\times {{10}^{-17}}J\]

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  • question_answer26) Two gases of equal masses are in thermal equilibrium. If \[{{P}_{a}},{{P}_{b}}\]and\[{{V}_{a}},{{V}_{b}}\] are their respective pressures and volumes, then which relation is true?

    A) \[2{{P}_{a}}{{V}_{a}}={{P}_{b}}{{V}_{b}}\]

    B) \[{{P}_{a}}\ne {{P}_{b}},{{V}_{a}}={{V}_{b}}\]

    C) \[\frac{{{P}_{a}}}{{{V}_{a}}}=\frac{{{P}_{b}}}{{{V}_{b}}}\]

    D) \[{{P}_{a}}{{V}_{a}}={{P}_{b}}{{P}_{v}}\]

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  • question_answer27) A thin uniform rod of mass and length is hinged at the lower end to a level floor and strands vertically. It is now allowed to fall, then its upper end will strike the floor with the velocity :

    A) \[\sqrt{2gl}\]

    B) \[\sqrt{5gl}\]

    C) \[\sqrt{3gl}\]

    D) \[\sqrt{mgl}\]

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  • question_answer28) The magnitude of acceleration of particle executing SHM at the position of maximum di placement is :

    A) zero

    B) minimum

    C) maximum

    D) none of these

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  • question_answer29) Mud houses are cooler in summer and warmer in winter because :

    A) mud is a good conductor of heat

    B) mud is a superconductor of heat

    C) mud is a bad conductor of heat

    D) none of these

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  • question_answer30) Drift velocity varies with the velocity of electric field as per the relation :

    A) \[{{V}_{d}}={{E}^{2}}\]

    B) \[{{V}_{d}}\alpha E\]

    C) \[{{V}_{d}}\alpha \frac{1}{E}\]

    D) (d )\[{{V}_{d}}\alpha {{E}^{2}}\]

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  • question_answer31) If the critical angle for total internal reflection from a medium to vacuum is \[30{}^\circ \], then velocity of light in medium will be :

    A) \[1.5\times {{10}^{8}}m/s\]

    B) \[2\times {{10}^{8}}m/s\]

    C) \[3\times {{10}^{8}}m/s\]

    D) \[5\times {{10}^{8}}m/s\]

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  • question_answer32) What is the momentum of a 100000 kg truck whose velocity is 20 m/s?

    A) \[2\times {{10}^{5}}kg\,m/s\]

    B) \[1\times {{10}^{5}}kg\,m/s\]

    C) \[3\times {{10}^{8}}kg\,m/s\]

    D) none of these

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  • question_answer33) A 10 kg ball moving with velocity 2 m/s collides with a 20 kg mass initially at rest. If both of them coalesce, the final velocity of combined mass is :

    A) \[\frac{3}{4}\] m/s

    B) \[\frac{1}{3}\] m/s

    C) \[\frac{3}{2}\] m/s

    D) \[\frac{2}{3}\] m/s

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  • question_answer34) A 30 g bullet travelling initially at 500 m/s penetrates 12 cm in to wooden block. The average force exerted will be :

    A) 31250 N

    B) 41250 N

    C) 31750 N

    D) 30450 N

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  • question_answer35) With what minimum acceleration can a fireman slide down a rope who breaking strength is two third of his weight :

    A) \[\frac{g}{3}\]

    B) \[\frac{2}{3}g\]

    C) \[\frac{3}{2}g\]

    D) \[\frac{g}{2}\]

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  • question_answer36) Calculate the force required to separate the glass plate of area \[{{10}^{-2}}{{m}^{2}}\]with a film of water 0.05 mm thick [surface tension of water is \[70\times {{10}^{-3}}\]N/m] :

    A) 25 N

    B) 20 N

    C) 14 N

    D) 28 N

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  • question_answer37) At which of the following temperature would the molecules of gas have twice the average kinetic energy they have at \[20{}^\circ C\]?

    A) \[40{}^\circ C\]

    B) \[80{}^\circ C\]

    C) \[586{}^\circ C\]

    D) \[313{}^\circ C\]

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  • question_answer38) Air is expanded from 50 litre to 150 litre at 2 atmospheric pressure. The external work done is \[(1atmosphere=1\times {{10}^{5}}N/{{m}^{2}}):\]

    A) \[2\times {{10}^{-8}}J\]

    B) \[2\times {{10}^{-4}}J\]

    C) 200J

    D) 2000 J

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  • question_answer39) The mass of moon is 1% of mass of earth. The ratio of gravitational pull of earth on moon and that of moon on earth will be:

    A) 1:1

    B) 1:10

    C) 1:100

    D) 2:1

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  • question_answer40) At what temperature, the speed of sound in air will become double of its valus at \[27{}^\circ C\]:

    A) \[{{54}^{0}}C\]

    B) \[{{627}^{0}}C\]

    C) \[{{327}^{0}}C\]

    D) \[{{927}^{0}}C\]

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  • question_answer41) A wave in expressed by the equation \[y=0.5\sin \pi (0.01x-3t)\] where x,y are in metres and t in second. The speed of propagation will be :

    A) 150 m/s

    B) 300 m/s

    C) 350 m/s

    D) 250 m/s

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  • question_answer42) A uniform rope of mass 0.1 kg and length 2.5m hangs from ceiling. The speed of transverse wave in the rope at upper end and at a point 0.5 m distance from lower end will be :

    A) \[5m/s,2.24m/s\]

    B) \[10m/s,3.23m/s\]

    C) 7.5m/s

    D) none of these

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  • question_answer43) If the horizontal and vertical component of earths magnetic field are equal at a certain place, the angle of dip is :

    A) \[90{}^\circ \]

    B) \[60{}^\circ \]

    C) \[45{}^\circ \]

    D) \[0{}^\circ \]

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  • question_answer44) A wire of length L and cross-sectional area A is made of a material of Youngs modulus Y. If the wire is stretched by the amount x. The work done is :

    A) \[\frac{YA{{x}^{2}}}{2L}\]

    B) \[\frac{YA{{x}^{2}}}{L}\]

    C) \[Ya{{x}^{2}}L\]

    D) \[\frac{Yax}{2L}\]

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  • question_answer45) The length of an astronomical telescope for normal vision (relaxed eye) will be :

    A) \[{{f}_{0}}-{{f}_{e}}\]

    B) \[{{f}_{0}}/{{f}_{e}}\]

    C) \[{{f}_{0}}\times {{f}_{e}}\]

    D) \[{{f}_{0}}+{{f}_{e}}\]

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  • question_answer46) A biconvex lens is made of material of refractive index 1.5 each of radius of curvature of lens surface is 20 cm. The focal length 10 cm to obtain a real image double the size of object will be:

    A) 30 cm

    B) 10 cm

    C) 25 cm

    D) 30 cm

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  • question_answer47) The distance at which an object should be placed in front of a convex lens focaI length 10 cm to obtain a real image double the size of object will be :

    A) 30 cm

    B) 15 cm

    C) 5 cm

    D) 10 cm

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  • question_answer48) In an X-ray tube, electrons bombarded the target produce X-rays of minmum wavelength\[1\overset{0}{\mathop{A}}\,\]The energy of bombarding electron will be :

    A) 100 eV

    B) 14375 eV

    C) 12000 eV

    D) 12375 eV

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  • question_answer49) In producing chlorine through helectrolysis, 100 kw power at 125 V is being consumed. The mass of chlorineper mimute liberated, will be : \[(0.367\times {{10}^{-6}}kg/coulomb)\]

    A) \[17.61\times {{10}^{-3}}kg\]

    B) \[10.61\times {{10}^{-3}}kg\]

    C) \[12.61\times {{10}^{-3}}kg\]

    D) none of these

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  • question_answer50) The current voltage graph for a given metallic wire at two different temperatures\[{{T}_{1}}\] and \[{{T}_{2}}\] are shown in given figure, which of the relation is correct form the following?

    A) \[{{T}_{2}}>{{T}_{1}}\]

    B) \[{{T}_{1}}>{{T}_{2}}\]

    C) \[{{T}_{1}}={{T}_{2}}\]

    D) none of these

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  • question_answer51) When \[C{{H}_{3}}COOH\] reacts with \[C{{H}_{3}}-MgX:\]

    A) \[C{{H}_{3}}COX\] is formed

    B) hydrocarbon is formed

    C) acetone is formed

    D) alcohol is formed

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  • question_answer52) A cyclic hydrocarbon molecule has all the carbon and hydrogen in a single plane. All the carbon-carbon bonds are of same length, less then \[1.54\overset{\text{o}}{\mathop{\text{A}}}\,\], but more than \[1.34\overset{\text{o}}{\mathop{\text{A}}}\,\]. The \[C-C\] bond angle will be:

    A) \[{{109}^{o}}28\]

    B) \[{{100}^{o}}\]

    C) \[{{180}^{o}}\]

    D) \[{{120}^{o}}\]

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  • question_answer53) Which will reduce zinc oxide to zinc?

    A) \[Mg\]

    B) \[Pb\]

    C) \[Cu\]

    D) \[Fe\]

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  • 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) \[AgCl\]

    B) \[AgBr\]

    C) \[A{{g}_{2}}Cr{{O}_{4}}\]

    D) Any of these

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  • question_answer55) By Wurtz reaction, a mixture of methyl iodide and ethyl iodide gives:

    A) butane

    B) ethane

    C) propane

    D) A mixture of the above three

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  • question_answer56) Addition of \[SnC{{l}_{2}}\] to \[HgC{{l}_{2}}\] gives ppt:

    A) white turning to red

    B) white turning to grey

    C) black fuming to white

    D) none

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  • question_answer57) In fermentation by zymase, alcohol, and \[C{{O}_{2}}\] are obtained from:

    A) invert sugar

    B) glucose

    C) fructose

    D) all

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  • question_answer58) The stability of ferric ion is due to:

    A) half filled f-orbital

    B) half filled d-orbitals

    C) completely filled f-orbital

    D) completely filled d-orbital

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  • question_answer59) Electron affinity is positive, when:

    A) O changes into \[{{O}^{-}}\]

    B) \[{{O}^{-}}\] changes into \[{{O}^{2-}}\]

    C) O changes into \[{{O}^{+}}\]

    D) electron affinity is always negative

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  • question_answer60) lonisation potential for a noble gas is:

    A) maximum in a period

    B) minimum in a period

    C) either minimum or maximum

    D) constant

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  • question_answer61) Ethyl amine on acetylation gives:

    A) N-ethyl acetamide

    B) acetamide

    C) methyl acetamide

    D) none

    View Answer play_arrow
  • question_answer62) Strongest oxidising agent among halogen is:

    A) \[{{I}_{2}}\]

    B) \[B{{r}_{2}}\]

    C) \[C{{l}_{2}}\]

    D) \[{{F}_{2}}\]

    View Answer play_arrow
  • question_answer63) Which reagent can convert acetic acid into ethanol?

    A) \[Na+alcohol\]

    B) \[LiAI{{H}_{4}}+ether\]

    C) \[{{H}_{2}}+Pt\]

    D) \[Sn+HCl\]

    View Answer play_arrow
  • question_answer64) In presence of moisture, \[S{{O}_{2}}\]can:

    A) act as oxidant

    B) act as reductant

    C) gain electron

    D) not act as reductant

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  • question_answer65) Acetals are:

    A) ketones

    B) diethers

    C) aldehyde

    D) hydroxy aldehydes

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  • question_answer66) The principle involved in the classification of basic radicals, is:

    A) common ion effect

    B) solubility product

    C) valency of radicals

    D) strength of salt

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  • question_answer67) Formation of diethyl ether from ethanol is based on a:

    A) dehydration reaction

    B) dehydrogenation reaction

    C) hydrogenation reaction

    D) homolytic fission reaction

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  • question_answer68) Hypo phosphorous acid, \[{{H}_{3}}P{{O}_{2}}\] is:

    A) a monobasic acid

    B) a tribasic acid

    C) a dibasic acid

    D) not acidic at all

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  • question_answer69) What is obtained when acetyl chloride is heated with benzene in presence of anhydrous \[AlC{{l}_{3}}\]?

    A) Acetyl benzoic acid

    B) Anisol

    C) Acetophenone

    D) Chlorobenzene

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  • question_answer70) Which gas is used in airated water?

    A) \[C{{O}_{2}}\]

    B) \[S{{O}_{2}}\]

    C) \[CO\]

    D) Water vapours

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  • question_answer71) The refluxing of \[{{(C{{H}_{3}})}_{2}}NCOC{{H}_{3}}\] with acid gives:

    A) \[{{(C{{H}_{3}})}_{2}}NH+C{{H}_{3}}COOH\]

    B) \[{{(C{{H}_{3}})}_{2}}NCOOH+C{{H}_{4}}\]

    C) \[2C{{H}_{3}}OH+C{{H}_{3}}CON{{H}_{2}}\]

    D) \[2C{{H}_{3}}N{{H}_{2}}+C{{H}_{3}}COOH\]

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  • question_answer72) Which is obtained on treating phenol, with dilute \[HN{{O}_{3}}\]?

    A)

    B)

    C)

    D) None

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  • question_answer73) Solder is an alloy of lead with:

    A) copper

    B) zinc

    C) nickel

    D) tin

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  • question_answer74) Arrange \[NH_{4}^{+},\,{{H}_{2}}O,\,{{H}_{3}}{{O}^{+}},HF\] and \[O{{H}^{-}}\] in increasing order of acidic nature:

    A) \[{{H}_{3}}{{O}^{+}}<NH_{4}^{+}<HF<O{{H}^{-}}<{{H}_{2}}O\]

    B) \[NH_{4}^{+}<HF<{{H}_{3}}{{O}^{+}}<{{H}_{2}}O<O{{H}^{-}}\]

    C) \[O{{H}^{-}}<{{H}_{2}}O<NH_{4}^{+}<HF<{{H}_{3}}{{O}^{+}}\]

    D) \[{{H}_{3}}{{O}^{+}}>HF>{{H}_{2}}O>NH_{4}^{+}>O{{H}^{-}}\]

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  • question_answer75) Which of the following radicals, gives the apple green flame during flame test?

    A) \[B{{a}^{2+}}\]

    B) \[S{{r}^{2+}}\]

    C) \[C{{a}^{2+}}\]

    D) \[C{{r}^{3+}}\]

    View Answer play_arrow
  • question_answer76) When chlorine is passed through concentrated solution of \[KOH\], the compound formed is:

    A) \[KCl{{O}_{4}}\]

    B) \[KCl{{O}_{3}}\]

    C) \[KCl{{O}_{2}}\]

    D) \[KClO\]

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  • question_answer77) The equilibrium constant \[{{K}_{p}}\]for the reaction, \[{{H}_{2}}(g)+{{I}_{2}}(g)2HI(g)\] is:

    A) more than one

    B) less than one

    C) equal to \[{{K}_{C}}\]

    D) zero

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  • question_answer78) What is the weight of oxygen that is required for the complete combustion of 2.8 kg of ethylene?

    A) \[9.6kg\]

    B) \[96.0\text{ }kg\]

    C) \[6.4kg\]

    D) \[2.8kg\]

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  • question_answer79) The metal that does not displace hydrogen from an acid is:

    A) \[Ca\]

    B) \[Al\]

    C) \[Zn\]

    D) \[Hg\]

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  • question_answer80) The decomposition of \[{{N}_{2}}{{O}_{5}}\] occurs as, \[2{{N}_{2}}{{O}_{5}}\xrightarrow{{}}4N{{O}_{2}}+{{O}_{2}}\], and follows 1st order kinetics, hence :

    A) the reaction is unimolecular

    B) the reaction is bimolecular

    C) \[{{t}_{1/2}}\propto {{a}^{0}}\]

    D) none

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  • question_answer81) Atomic radii of F and Ne, in A, are given by:

    A) \[0.72,0.71\]

    B) \[0.72,1.6\]

    C) \[1.6,1.58\]

    D) \[0.71,0.72\]

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  • question_answer82) Which pair has both members from the same period of periodic table?

    A) \[Cl,Br\]

    B) \[Ca,Cl\]

    C) \[Na,Ca\]

    D) \[Na,Cl\]

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  • question_answer83) When dilute aqueous solution of \[AgN{{O}_{3}}\] (excess) is added to \[KI\] solution, positively charged sol of \[AgI\] is formed due to adsorption of:

    A) \[NO_{3}^{-}\]

    B) \[O_{2}^{-}\]

    C) \[A{{g}^{+}}\]

    D) \[{{K}^{+}}\]

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  • question_answer84) Which of the following has largest ionic radius?

    A) \[C{{s}^{+}}\]

    B) \[L{{i}^{+}}\]

    C) \[N{{a}^{+}}\]

    D) \[{{K}^{+}}\]

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  • question_answer85) For \[CaC{{O}_{3}}(s)CaO(s)+C{{O}_{2}}(g)\]at \[{{927}^{o}}C,\] \[\Delta H=176kJ\] mol: then is:

    A) \[180\text{ }kJ\]

    B) \[186.4\text{ }kJ\]

    C) \[166.0kJ\]

    D) \[160\text{ }kJ\]

    View Answer play_arrow
  • question_answer86) The charge required to liberate one gram equivalent of an element, is:

    A) 96500 Faraday

    B) 1 Faraday

    C) 1 Coulomb

    D) none of these

    View Answer play_arrow
  • question_answer87) The shape of sulphate ion is:

    A) square planar

    B) trigonal

    C) trigonal planar

    D) tetrahedral

    View Answer play_arrow
  • question_answer88) The \[H-H\]bond energy is \[430kJ\,\,mo{{l}^{-1}}\] and \[Cl-Cl\] bond energy is \[240kJ\,mo{{l}^{-1}}\]. \[\Delta H\]for \[HCl\] is\[-90\text{ }kJ\]. The \[H-Cl\] bond energy is about:

    A) \[180\text{ }kJ\text{ }mo{{l}^{-1}}\]

    B) \[360\text{ }kJ\text{ }mo{{l}^{-1}}\]

    C) \[\text{213 }kJ\text{ }mo{{l}^{-1}}\]

    D) \[\text{425 }kJ\text{ }mo{{l}^{-1}}\]

    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

    B) 68

    C) 34

    D) (d 17

    View Answer play_arrow
  • question_answer90) The energy released in an atom bomb explosion is mainly due to:

    A) release of neutrons

    B) release of electrons

    C) greater mass of products than initial material

    D) lesser mass of products than initial material

    View Answer play_arrow
  • question_answer91) Highest entropy is in:

    A) hydrogen

    B) water

    C) graphite

    D) mercury

    View Answer play_arrow
  • question_answer92) Which one will liberate \[B{{r}_{2}}\] from \[KBr\]?

    A) \[{{I}_{2}}\]

    B) \[S{{O}_{2}}\]

    C) \[HI\]

    D) \[C{{l}_{2}}\]

    View Answer play_arrow
  • question_answer93) Nuclides:

    A) have specific atomic numbers

    B) have same number of protons

    C) have specific atomic number and mass numbers

    D) are isotopes

    View Answer play_arrow
  • question_answer94) Arrhenius equation, is:

    A) \[\Delta H=\Delta E+\Delta {{n}_{g}}RT\]

    B) \[\Delta G=\Delta H-T.\Delta S\]

    C) \[K=A.{{e}^{{{E}_{a}}/RT}}\]

    D) none of these

    View Answer play_arrow
  • question_answer95) In which of the following compounds, the oxidation number of iodine is fractional?

    A) \[I{{F}_{3}}\]

    B) \[I{{F}_{5}}\]

    C) \[I_{3}^{-}\]

    D) \[I{{F}_{7}}\]

    View Answer play_arrow
  • question_answer96) Non-directional orbital is:

    A) \[4p\]

    B) \[4d\]

    C) \[4f\]

    D) \[3s\]

    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) \[1\times {{10}^{-8}}\]

    B) \[1\times {{10}^{-4}}\]

    C) \[1\times {{10}^{-6}}\]

    D) \[{{10}^{-5}}\]

    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

    B) 2 times that of He

    C) 0.35 times that of He

    D) 8times that of helium

    View Answer play_arrow
  • question_answer99) A white substance having alkaline nature in solution is:

    A) \[NaN{{O}_{3}}\]

    B) \[N{{H}_{4}}Cl\]

    C) \[N{{a}_{2}}C{{O}_{3}}\]

    D) \[F{{e}_{2}}{{O}_{3}}\]

    View Answer play_arrow
  • question_answer100) A soluton of \[FeC{{l}_{3}}\] in water acts as acidic solution due to:

    A) hydrolysis of \[F{{e}^{3+}}\]

    B) acidic impurities

    C) dissociation

    D) ionization

    View Answer play_arrow
  • question_answer101) Which of the following is known as pond silk?

    A) Spirogyra

    B) Uhtiirix

    C) Nostoc

    D) Annbaena

    View Answer play_arrow
  • question_answer102) Which of the following is incorrectly matched?

    A) Rabbit-Microelcithal, isolecithal

    B) Frog-Mesolecithal, centrolecithal

    C) Human-Mesolecithal, centrolecithal

    D) Birds-Macrolecithal, telolecithal

    View Answer play_arrow
  • question_answer103) In a copulating pair of Pheretima posthuma which of the two processes take place?

    A) Internal fertilization and reciprocal fertilization

    B) Cross fertilization and reciprocal fertilization

    C) Reciprocal fertilization and internal fertilization

    D) External fertilization and internal fertilization

    View Answer play_arrow
  • question_answer104) A student sets up an experiment on photosynthesis as follows : He takes soda water in a glass tumbler and add achlorophyll extracts into the contents and keeps the tumbler exposed to sunlight hoping that he has provided necessary ingredients for photosynthesis to proceed (viz., \[C{{O}_{2}},\,{{H}_{2}}O\], chlorophyll and light). What do you think what will happen after, say, a few hours of exposure of light?

    A) Photosynthesis will take place and glucose will be produced

    B) Photosynthesis will take place and starch will be produced which will turn the mixture turbid

    C) Photosynthesis will not take place because \[C{{O}_{2}}\] dissolved in soda water escapes into the atmosphere

    D) Photosynthesis will not take place because intact chloroplasts are needed for the process.

    View Answer play_arrow
  • question_answer105) The pesticide most persistent in the soil is :

    A) DDT

    B) BHC

    C) dieldrin

    D) baygon

    View Answer play_arrow
  • question_answer106) An antibody is a :

    A) white corpuscle which attack invading bacteria

    B) molecule that specifically inactivate an antigen

    C) component of the blood

    D) secrection of mammalian erythrocyte

    View Answer play_arrow
  • question_answer107) ECG is a measure of :

    A) rate of heart beat

    B) difference in electric potential

    C) volume of blood pumped

    D) ventricular contraction

    View Answer play_arrow
  • question_answer108) Vitreous humor is :

    A) colloid

    B) watery fluid

    C) mucoid connective tissue

    D) all of the above

    View Answer play_arrow
  • question_answer109) In respiration, largest amount of energy is produced in :

    A) anaerobic respiration

    B) Krebs cycle

    C) glycolysis

    D) none of the above

    View Answer play_arrow
  • question_answer110) Torpedo is commonly known as :

    A) suckcrfish

    B) electric ray

    C) globefish

    D) sea horse

    View Answer play_arrow
  • question_answer111) Foramen of Panizzae is found in the heart of:

    A) rabbit

    B) pigeon

    C) crocodile

    D) frog

    View Answer play_arrow
  • question_answer112) Which one of the following pesticides is banned now-a-days?

    A) DDT

    B) Eldrin

    C) Aldrin

    D) Toxaphene

    View Answer play_arrow
  • question_answer113) Carnassial teeth are modified for :

    A) crushing

    B) tearing

    C) grinding

    D) cutting

    View Answer play_arrow
  • question_answer114) In the anther wall :

    A) tapetum lies between endothecium and middle layers

    B) tapetum lies just inner to endothecium

    C) middle layer is the between endo thecium and tapetum

    D) endothecium lies to middle layer

    View Answer play_arrow
  • question_answer115) Insectivorous plants grow in a soil:

    A) deficient in iron

    B) rich in nitrogen

    C) deficient in nitrogen

    D) deficient in calcium

    View Answer play_arrow
  • question_answer116) Aleurone grains arc rich in :

    A) fat

    B) protein

    C) carbohydrates

    D) auxins

    View Answer play_arrow
  • question_answer117) Meiosis can be observed in :

    A) tapetal cells

    B) megaspores

    C) microspores

    D) spore mother cells

    View Answer play_arrow
  • question_answer118) Which of the following is not an intermediate in Krebs cycle?

    A) Acetic acid

    B) Succinyl coenzyme-A

    C) Maleic acid

    D) Citric acid

    View Answer play_arrow
  • question_answer119) The possible beneficial aspect of grazing animals is the :

    A) removal of wild animals and pests

    B) eradication of weeds

    C) removal of wild plants

    D) addition of their excreta into the soil

    View Answer play_arrow
  • question_answer120) Carrier proteins are involved in :

    A) transport of enzymes

    B) water transport

    C) active transport of ions

    D) passive transport of ions

    View Answer play_arrow
  • question_answer121) McClintock is related to :

    A) plasmids

    B) retroposons

    C) transposons

    D) none of the above

    View Answer play_arrow
  • question_answer122) Chloroplasts of Spirogyra have :

    A) spiral margin

    B) smooth or waxy margin

    C) smooth margin

    D) none of the above

    View Answer play_arrow
  • question_answer123) Vascular bundles, in which phloem is found on both sides of xylem are called :

    A) collateral

    B) bicollateral

    C) radial

    D) amphicribral

    View Answer play_arrow
  • question_answer124) Aercnchyma is helpful in plants by :

    A) providing buoyancy in hydrophytes

    B) absorption in stilt roots

    C) giving mechanical strength to plants

    D) giving flexibility to plants

    View Answer play_arrow
  • question_answer125) Who proposed the Cohesion Theory of ascent of sap?

    A) Strasburger

    B) Godlewski

    C) Western

    D) Dixon and Jolley

    View Answer play_arrow
  • question_answer126) A child has single kidney since birth. This variation is ;

    A) hybridization

    B) negative meristic

    C) blastogenic

    D) substantive

    View Answer play_arrow
  • question_answer127) Why is CO poisonous for man?

    A) CO affects the nerves of the lungs

    B) CO affects the diaphragm and intercostal muscles

    C) CO reacts with oxygen reducing percentage of \[{{O}_{2}}\] in air

    D) haemoglobin combines with CO instead \[{{O}_{2}}\]and the product cannot dissociate

    View Answer play_arrow
  • question_answer128) Duct of Bellini opens on :

    A) ureter

    B) renal papilla

    C) duodenum

    D) DCT

    View Answer play_arrow
  • question_answer129) Humus is essential for plant growth because :

    A) it is rich in nutrients and increases the water holding capacity of soil

    B) it increases aeration of soil

    C) it increases porocity of soil

    D) all of the above

    View Answer play_arrow
  • question_answer130) Which of the following is viviparous?

    A) Running birds

    B) Whales

    C) Bats

    D) Both b and c

    View Answer play_arrow
  • question_answer131) In short homed cattle, genes for red (R) and white (r) coat colour occur. Cross between red (R R) and white (rr) produced (Rr) roan. This is an example of:

    A) incomplete dominance

    B) codominance

    C) complementary genes

    D) epistasis

    View Answer play_arrow
  • question_answer132) Complex tissue includes :

    A) collenchyma

    B) apical meristems

    C) conducting tissue

    D) idioblast

    View Answer play_arrow
  • question_answer133) Turpentine oil is obtained from :

    A) Pinus longifolia

    B) Melia azadirachta

    C) Eucalyptus

    D) all of the above

    View Answer play_arrow
  • question_answer134) The sclerenchyma of the hypodermis in the Pinus needle helps in :

    A) increasing the absorptive surface of the cell

    B) checking transpiration

    C) mechanical support

    D) photosynthesis

    View Answer play_arrow
  • question_answer135) Sponges are :

    A) pelagic

    B) free-swimming

    C) planktonic

    D) sessile

    View Answer play_arrow
  • question_answer136) Schisfosoma is a parasite found in :

    A) testes of frog

    B) liver

    C) intestine

    D) blood

    View Answer play_arrow
  • question_answer137) The recent model for plasma membrane proposed by Singer and Nicolson is :

    A) molecular-lipid model

    B) lamellar model

    C) unit membrane model

    D) fluid mosaic model

    View Answer play_arrow
  • question_answer138) Cells obtained from cancerous tumors are known as :

    A) hybridomas

    B) myelomas

    C) polyclonal cells

    D) monoclonal cells

    View Answer play_arrow
  • question_answer139) Significance of meiosis lies in:

    A) reduction of chromosome number to one half

    B) maintaining consistancy of chromosome number during sexual reproduction

    C) production of genetic variability

    D) all of the above

    View Answer play_arrow
  • question_answer140) Which is the connecting link between glycolysis and Krebs cycle?

    A) Acetyl Co-A

    B) Pyruvic acid

    C) Both a and b

    D) None of these

    View Answer play_arrow
  • question_answer141) Mark the correct sequence :

    A) Anthesis \[\xrightarrow[{}]{{}}\]Meiosis\[\xrightarrow[{}]{{}}\]Pollination\[\xrightarrow[{}]{{}}\]Syngamy

    B) Pollination\[\xrightarrow[{}]{{}}\]Meiosis\[\xrightarrow[{}]{{}}\] Anthesis \[\xrightarrow[{}]{{}}\]Syngamy

    C) Anthesis\[\xrightarrow[{}]{{}}\]Pollination\[\xrightarrow[{}]{{}}\]Meiosis \[\xrightarrow[{}]{{}}\]Syngamy

    D) Anthesis\[\xrightarrow[{}]{{}}\]Meiosis\[\xrightarrow[{}]{{}}\]Pollination \[\xrightarrow[{}]{{}}\]Syngamy

    View Answer play_arrow
  • question_answer142) The relationship between the alga Microcystis and the surrounding fauna corresponds to :

    A) ammensalism

    B) parasitism

    C) predation

    D) exploitation

    View Answer play_arrow
  • question_answer143) Lipofucsin granules are found in:

    A) nerve cell

    B) cardiac muscle

    C) red muscle

    D) cartilage

    View Answer play_arrow
  • question_answer144) Camel in its hump stores :

    A) water for emergency

    B) fat for emergency

    C) both fat and water for emergency

    D) fat and proteins as reserve food for emergency

    View Answer play_arrow
  • question_answer145) Arrangement of three successive bases in the genetic code signifies :

    A) protein

    B) nucleic acid

    C) plasmids

    D) amino acids

    View Answer play_arrow
  • question_answer146) Potato is a native of :

    A) Brazil

    B) Peru

    C) Panama

    D) Mexico

    View Answer play_arrow
  • question_answer147) The anthers in Solanaceae are :

    A) monothecus, introse

    B) dithecus, extrose

    C) dithecus, introse

    D) monothecus, extrose

    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

    B) number of female children are born less as there is more chance of prenatal death in case of female child

    C) female infanticide

    D) all of the above

    View Answer play_arrow
  • question_answer149) During embryonic development endoskeleton and muscle develop from which germinal layer?

    A) Ectoderm

    B) Endoderm

    C) Mesodcrm

    D) Blastopore

    View Answer play_arrow
  • question_answer150) The semen fluid consists of sperm cells and secretion from:

    A) seminal vesical, prostate gland, Cowpers gland

    B) seminal vesicle, testis, uterus

    C) seminal vesicle, prostate gland, testis

    D) seminal vesicle, Cowpers gland and testis

    View Answer play_arrow
  • question_answer151) The peculiar feature of Marchantia plamata is :

    A) absence of gemma cup

    B) presence of androgynous receptacles

    C) absence of elaters

    D) all of the above

    View Answer play_arrow
  • question_answer152) Pneumatophores are positively :

    A) geotropic

    B) phototropic

    C) aerotropic

    D) rheotropic

    View Answer play_arrow
  • question_answer153) Entry of pollen grain through micropyle is called :

    A) porogamy

    B) chalazogamy

    C) allogamy

    D) geitnogamy

    View Answer play_arrow
  • question_answer154) A change in the relative abundance of an allele (the allelic frequency) within a population, over a succession of generations is called :

    A) micro evolution

    B) macro evolution

    C) co-evolution

    D) phylogenetic evolution

    View Answer play_arrow
  • question_answer155) The early man whose skeleton is almost indistinguishable from that of modem man is :

    A) Neanderthal man

    B) Peking man

    C) Homo erectus

    D) Cromagnon man

    View Answer play_arrow
  • question_answer156) Which of these is based on magnetic resonance?

    A) EEG

    B) CT scanning

    C) NMR scanning

    D) PET scanning

    View Answer play_arrow
  • question_answer157) Broad spectrum antibiotic :

    A) acts on all bacteria and virus

    B) is effective in very small amount

    C) acts on both pathogen and host

    D) acts on a variety of pathogenic microorganisms

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  • question_answer158) Tunnel vision is associated with :

    A) alcoholism

    B) smoking

    C) drug addiction

    D) epilepsy

    View Answer play_arrow
  • question_answer159) In his bacteriophage experiments, Hershey and Chase demonstrated that DNA is genetic material in ;

    A) TMV

    B) Escherichia coli

    C) T2 bacteriophage

    D) Diplococcic pneumonia

    View Answer play_arrow
  • question_answer160) Man whose fossils were found in Shivalik hills :

    A) Ramapitheciis

    B) Pithecanthropus

    C) Australopithecus

    D) Sinanthropus

    View Answer play_arrow
  • question_answer161) Which of the following is autotrophic :

    A) virus

    B) mycoplasma

    C) Nostoc

    D) all of these

    View Answer play_arrow
  • question_answer162) Germination of pollen grain on the stigma is :

    A) in situ germination

    B) in vitro germination

    C) in vivo germination

    D) autogamy

    View Answer play_arrow
  • question_answer163) The function of tracheal hair is to :

    A) pass mucus out

    B) pass mucus in

    C) pass air out

    D) pass air in

    View Answer play_arrow
  • question_answer164) In Echinodermata, tube feet are related with :

    A) locomotion

    B) excretory system

    C) respiratory system

    D) reproductive system

    View Answer play_arrow
  • question_answer165) Autoradiography technique was used to :

    A) trace the path of carbon in photosynthesis

    B) establish that the oxygen evolved during phtosynthesis is by photolysis of water molecule

    C) study photorespiration in certain plants

    D) find out the absorption maximum of chlorophyll pigments

    View Answer play_arrow
  • question_answer166) Where did an epidemic bone softening disease Itai-Itai occurred first :

    A) South Korea

    B) Japan

    C) China

    D) Burma

    View Answer play_arrow
  • question_answer167) The trapping centre of light energy in photosystem-I is :

    A) P- 660

    B) P- 700

    C) P- 680

    D) P- 630

    View Answer play_arrow
  • question_answer168) The membrane which allows passage of certain substances more readily than others is termed as :

    A) permeable

    B) selectively permeable

    C) semipermeable

    D) impermeable

    View Answer play_arrow
  • question_answer169) Which combination of tissues acts together to provide the support to the hypocotyl of a seedling?

    A) Epidermis and collenchyma

    B) Xylem and parenchyma

    C) Epidermis and parenchyma

    D) Xylem and phloem fibres

    View Answer play_arrow
  • question_answer170) The UV radiation from sun cause reaction that produce :

    A) carbon monoxide

    B) sulphur dioxide

    C) ozone

    D) fluorides

    View Answer play_arrow
  • question_answer171) Slow muscle fibres are found in :

    A) eye

    B) leg

    C) stomach

    D) heart

    View Answer play_arrow
  • question_answer172) Muscle pump is:

    A) beating of heart

    B) squeezing effect of muscles upon veins running through them

    C) peristaltic wave that travel along the alimentary canal

    D) none of these

    View Answer play_arrow
  • question_answer173) The magnitude of root pressure ranges between :

    A) 2-5 aim

    B) 3-5 atm

    C) 0.1-0.2 atm

    D) 4-6 atm

    View Answer play_arrow
  • question_answer174) Guttation is a consequence of high :

    A) root pressure

    B) transpiration pull

    C) photosynthesis

    D) respiration

    View Answer play_arrow
  • question_answer175) Which of the following part in cows stomach is specialised for microbial digestion of plant material ?

    A) Rumen

    B) Reticulum

    C) Abomasum

    D) Both a and b

    View Answer play_arrow
  • question_answer176) Which of the following is/are not an essential micro nutrient?

    A) Boron

    B) Nickel and cadmium

    C) Molybdenum

    D) Zinc

    View Answer play_arrow
  • question_answer177) Khaira disease of paddy is caused by :

    A) viral attack

    B) Mn deficiency

    C) MLO attack

    D) Zn deficieincy

    View Answer play_arrow
  • question_answer178) The gliding joints are important for. gliding movements. One example of such a joint is between the :

    A) zygapophyses of adjacent vertebrae

    B) humerus and glenoid cavity

    C) occipital condyle and odontoid process

    D) femur and tibio fibula

    View Answer play_arrow
  • question_answer179) The term hormone was given by :

    A) Starling for insulin

    B) Starling for secretin

    C) Byliss for insulin

    D) Byliss for secretin

    View Answer play_arrow
  • question_answer180) Cushings syndrome and myxodema are associated with these gland respectively :

    A) aderenal, thyroid

    B) thyroid, adrenal

    C) adrenal, pituitary

    D) parathyroid, thyroid

    View Answer play_arrow
  • question_answer181) Opening and closing of flowers represent a kind of :

    A) nastic movement

    B) tropic movement

    C) mutation

    D) autonomic movement

    View Answer play_arrow
  • question_answer182) 2,4-D is a/an :

    A) insecticide

    B) weedicide

    C) nematicide

    D) rodenticide

    View Answer play_arrow
  • question_answer183) What is the correct order of nitrogen assimilation?

    A) \[{{N}_{2}}\to N{{O}_{2}}\to N{{O}_{3}}\to N{{H}_{2}}OH\to N{{H}_{3}}\]

    B) \[{{N}_{2}}\to N{{O}_{3}}\to N{{O}_{2}}\to N{{H}_{2}}OH\to N{{H}_{3}}\]

    C) \[{{N}_{2}}\to N{{O}_{2}}\to N{{O}_{3}}\to N{{H}_{3}}\to N{{H}_{2}}OH\]

    D) \[{{N}_{2}}\to N{{O}_{3}}\to N{{O}_{2}}\to N{{H}_{3}}\to N{{H}_{2}}OH\]

    View Answer play_arrow
  • question_answer184) Hormone responsible for bolting is :

    A) auxin

    B) kinetins

    C) ethylene

    D) cytokinin

    View Answer play_arrow
  • question_answer185) Functional kidney of frog tadpole is :

    A) archipheros

    B) pronephros

    C) mesonephros

    D) metanephros

    View Answer play_arrow
  • question_answer186) Loop of Henie is meant for absorption of:

    A) potassium

    B) glucose

    C) water

    D) \[C{{O}_{2}}\]

    View Answer play_arrow
  • question_answer187) In dark adaptation :

    A) only cones are involved

    B) only rods are involved

    C) both rods and cones are involved

    D) neither rods nor cones are involved

    View Answer play_arrow
  • question_answer188) Part of ear where sound is transduced is:

    A) tympanic membrane

    B) malleus, incus and stapes

    C) semicircula canal

    D) cochlea

    View Answer play_arrow
  • question_answer189) A microbial mutant requiring growth factor in addition to minimal medium is :

    A) auxotroph

    B) heterotrophy

    C) autotroph

    D) syntroph

    View Answer play_arrow
  • question_answer190) When a plant has different types of leaves, the condition is known as :

    A) heterophilly

    B) anisophilly

    C) myremecophily

    D) none of the above

    View Answer play_arrow
  • question_answer191) In plants glycolate metabolism takes place in :

    A) low concentration of \[C{{O}_{2}}\]

    B) high concentration of \[C{{O}_{2}}\]

    C) low concentration of oxygen

    D) absence of oxygen

    View Answer play_arrow
  • question_answer192) Aristotles lantern is a characteristic of the following class of Echinodermata :

    A) Echinoidea

    B) Ophinroideci

    C) Hohfhuroidin

    D) Aslcroidea

    View Answer play_arrow
  • question_answer193) The largest corpuscle in mammalian blood are :

    A) basophils

    B) erythrocytes

    C) monocytes

    D) lymphocytes

    View Answer play_arrow
  • question_answer194) A fatty acid not synthesised in man is :

    A) oleic

    B) linoleic

    C) palmitoleic

    D) stearic

    View Answer play_arrow
  • question_answer195) Which of the following cell organelle remains enveloped by a single unit membrane?

    A) Mitochondria

    B) Lysosomes

    C) Nucleus

    D) Chloroplast

    View Answer play_arrow
  • question_answer196) The promoter region in a lac operon is d distinguishable into the following number of segments :

    A) three

    B) four

    C) two

    D) five

    View Answer play_arrow
  • question_answer197) Old stem of Combretum has :

    A) inter and intra xylary phloem

    B) inter and extra xylary phloem

    C) intra and extra xylary phloem

    D) all of the above

    View Answer play_arrow
  • question_answer198) Prions are :

    A) infectious nucleic acid

    B) infectious lipids

    C) infectious proteins

    D) infectious nucleoproteins

    View Answer play_arrow
  • question_answer199) When a sea diver goes very deep he has to breathe on compressed air at high pressure. After sometime he loses his strength to work and feel drowsy. This is because of :

    A) compressed air

    B) more \[C{{O}_{2}}\]diffusing into molecules

    C) more \[{{N}_{2}}\]diffusing in blood and body fats

    D) nervous system does not work properly

    View Answer play_arrow
  • question_answer200) Salivation in man is under the control of:

    A) medulla oblongata

    B) mesencephalon

    C) hypothalamus

    D) cerebellum

    View Answer play_arrow

   



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