# Solved papers for BVP Medical BVP Medical Solved Paper-2010

### done BVP Medical Solved Paper-2010

• question_answer1) The dimensions of electromotive force in terms of current A are

A) $\sqrt{2Eq/ml}$

B) $\sqrt{2Em/ql}$

C) $\sqrt{\frac{Eq}{ml}}$

D) ${{10}^{12}}$

• question_answer2) A body of mass 3 kg is under a force which causes a displacement in it, given by $s={{t}^{2}}/3$ (in m). Find the work done by the force in 2 s.

A) 2J

B) 3.8 J

C) 5.2 J

D) 2.6 J

• question_answer3) Two blocks of masses ${{m}_{1}}$and ${{m}_{2}}$ are connected by a massless spring and placed atsmooth surface. The spring initially stretchedand released. Then

A) the momentum of each particle remains constant separately

B) the magnitudes of momenta of bothbodies are same to each other

C) the mechanical energy of system remains constant

D) Both (a) and (b) are correct

• question_answer4) One quarter of the disc of mass m isremoved. If r be the radius of the disc, thenew moment of inertia is

A) $2.5\times {{10}^{7}}$

B) $1.25\times {{10}^{7}}$

C) $2.5\times {{10}^{8}}$

D) None of these

• question_answer5) How many images are formed by the lens shown; if an object is kept on its axis?

A) 1

B) 2

C) 3

D) 4

• question_answer6) A convex lens of focal length/is placed somewhere in between an object and a screen.The distance between object and screen is x.If numerical value of magnification producedby lens is m, focal length of lens is

A) $1.25\times {{10}^{6}}$

B) $\frac{G}{19}$

C) $\frac{G}{20}$

D) $E=16T-0.04{{T}^{2}}\mu V.$

• question_answer7) Find the thickness of a plate which willproduce a change in optical path equals to half the wavelength${{T}_{i}}$of the light passing through it normally.

A) ${{200}^{0}}C$

B) ${{300}^{0}}C$

C) $0.18\times {{10}^{-3}}{{C}^{-1}}$

D) $\left( \frac{0.4}{\pi } \right)$

• question_answer8) In double slit experiment, the distancebetween two slits is 0.6 mm and these areilluminated with light of wavelength 4800$11.4\Omega ,15.5A$.The angular width of first dark fringe on thescreen distant 120 cm from slits will be

A) $30.7\Omega ,6.5A$

B) $40.4\Omega ,5A$

C) $50\Omega ,5A$

D) ${{R}_{1}}$

• question_answer9) In a free space electron is placed in the pathof a plane electromagnetic wave, it will start moving along

A) centre of earth

B) equator of earth

C) magnetic field

D) electric field

• question_answer10) An electron of mass m and charge q isaccelerated from rest in a uniform electricfield of strength E. The velocity acquired byit as it (ravels a distance I is

A) ${{R}_{2}}$

B) ${{R}_{1}}>{{R}_{2}}$

C) $\frac{{{R}_{1}}}{{{R}_{2}}}$

D) $\frac{{{R}_{2}}}{{{R}_{1}}}$

• question_answer11) 20% of radioactive substance decay in10 days. The amount of the original material left after 30 days is

A) 51.2%

B) 62.6%

C) 15%

D) 21.2%

• question_answer12) 1% of $\frac{R_{1}^{2}}{{{R}_{2}}}$ Hz of a satellite link was usedfrom telephony. Find the number ofchannels (or subscribers) if each channel is8 kHz.

A) $\frac{R_{2}^{2}}{{{R}_{2}}}$

B) ${{r}^{-5/2}}$

C) ${{T}^{2}}$

D) ${{r}^{3}}$

• question_answer13) In a galvanometer, 5% of the total current inthe circuit passes through it. If the resistance ofthe galvanometer is G, the shunt resistance 5connected to the galvanometer is

A) 19 G

B) ${{r}^{7/2}}$

C) 20 G

D) ${{r}^{5/2}}$

• question_answer14) The temperature of the cold junction of athermocouple is $0{}^\circ C$ and the temperature of hot junction is $T{}^\circ C$. The emf is ${{r}^{3/2}}$The inversion temperature $l$ is

A) $\frac{l}{L-l}$

B) $400{}^\circ C$

C) $100{}^\circ C$

D) $\frac{L}{l}$

• question_answer15) At constant temperature, the volume of a gasis to be decreased by 4%. The pressure mustbe increased by

A) 4%

B) 4.16%

C) 8%

D) 3.86%

• question_answer16) The coefficient of real expansion of mercury is$\frac{l}{L}$. If the density of mercury at0?C is 13.6 g/cc, its density at 473 K will be

A) 13.12 g/cc

B) 13.65 g/cc

C) 13.51 g/cc

D) 13.22 g/cc

• question_answer17) A tap supplies water at $22{}^\circ C$, a man takes 1 Lof water per min at $37{}^\circ C$ from the geyser.The power of geyser is

A) 525 W

B) 1050 W

C) 1775 W

D) 2100 W

• question_answer18) In an L-R circuit, the value of L is $\frac{lL}{L+l}$and the value of R is 30H. If in the circuit, analternating emf of 200 V at 50 cycle per/s isconnected, the impedances of the circuit andcurrent will be

A) $\frac{m{{v}^{3}}}{4\sqrt{2g}}$

B) $\frac{m{{v}^{2}}}{\sqrt{2g}}$

C) $m(2g{{h}^{3}})$

D) $mg\left[ \frac{b}{2} \right]$

• question_answer19) Two conducting circular loops of radii $mg\left[ a+\frac{b}{2} \right]$ and$mg\left[ \frac{b-a}{2} \right]$ are placed in the same plane with theircentres coinciding. If $mg\left[ \frac{b+a}{2} \right]$, the mutual inductance M between them will be directly proportional to

A) $i={{i}_{1}}\cos \omega t+{{i}_{2}}\sin \omega t$

B) $\frac{{{i}_{1}}+{{i}_{2}}}{2}$

C) $\frac{{{({{i}_{1}}+{{i}_{2}})}^{2}}}{\sqrt{2}}$

D) $\frac{1}{\sqrt{2}}\sqrt{i_{1}^{2}+i_{2}^{2}}$

• question_answer20) Imagine a light planet revolving around avery massive star in a circular orbit of radiusr with a period of revolution T. If thegravitational force of attraction between the planet and star is proportional to $\frac{i_{1}^{2}+i_{2}^{2}}{2}$then$\Omega$ is proportional to

A) $\frac{30.8}{\sqrt{T}}\overset{0}{\mathop{A}}\,$

B) $\frac{3.08}{\sqrt{T}}\overset{0}{\mathop{A}}\,$

C) $\frac{0.308}{\sqrt{T}}\overset{0}{\mathop{A}}\,$

D) $\frac{0.0308}{\sqrt{T}}\overset{0}{\mathop{A}}\,$

• question_answer21) A partly hanging uniform chain of length L is resting on a rough horizontal table. If ${{E}_{e}}$ is the maximum possible length that can hang in equilibrium. The coefficient of friction between the chain and table is

A) ${{E}_{ph}}$

B) $\frac{{{E}_{e}}}{{{E}_{ph}}}$

C) $\frac{v}{c}$

D) $\frac{v}{2c}$

• question_answer22) A particle of mass m is projected with avelocity v making an angle of 45? with thehorizontal. The magnitude of angularmomentum of the projectile about an axis ofprojection when the particle is of maximumheight h is

A) zero

B) $\frac{v}{3c}$

C) $\frac{v}{4c}$

D) $x=7t+4{{t}^{2}}$

• question_answer23) A plate of mass m, length b and breadth a isinitially lying on a horizontal floor withlength parallel to the floor and breadthperpendicular to the floor. The work done toerect it on its breadth is

A) $y=5t,$

B) ${{s}^{2}}$

C) ${{s}^{2}}$

D) ${{s}^{2}}$

• question_answer24) An AC is given by equation${{s}^{2}}$. The rms value of thecurrent is given by

A) $10\sqrt{8}m/s$

B) $\frac{40}{3}m/s$

C) $\pi$

D) ${{\tan }^{-1}}(\sin )$

• question_answer25) When ultraviolet light of wavelength 100 nmis incident upon silver plate, a potential of 7.7 V is required to stop the photoelectronsfrom reaching the collector plate. How muchpotential will be required to stop thephotoelectrons when light of wavelength 200 nm is incident upon silver?

A) 1.5V

B) 3.85V

C) 2.35V

D) 15.4V

• question_answer26) A coil has an inductance of 0.7 H and isjoined in series with a resistance of 220${{\sin }^{-1}}(\sin \,r)$.When the AC emf of 220 V, 50 Hz is appliedto it, find the wattless component of currentin the circuit.

A) 0.2 A

B) 0.4 A

C) 0.5 A

D) 0.7 A

• question_answer27) Radiations of two photon energies twice andfive times the work function of metal areincident successively on the metal surface.The ratio of the maximum velocity of thephotoelectrons emitted in the two caseswill be

A) 1 : 1

B) 1 : 2

C) 1 : 3

D) 1 : 4

• question_answer28) The de-Broglie wavelength of neutrons in thermal equilibrium is

A) ${{\sin }^{-1}}(tan\,i)$

B) ${{\sin }^{-1}}(tan\,r)$

C) $\Omega$

D) $\Omega$

• question_answer29) An electron and a photon possess the same de-Broglie wavelength. If $\Omega$ and$\frac{{{T}^{2}}}{2x}$respectively are the energies of electron andphoton and v and c are their respective velocities, then $\frac{{{T}^{2}}}{2k}$ is equal to

A) $\frac{2k}{{{T}^{2}}}$

B) $\frac{2{{T}^{2}}}{k}$

C) ${{s}^{2}}$

D) ${{m}^{2}}/{{s}^{2}}$

• question_answer30) The x and y coordinates of a particle at anytime t are given by ${{m}^{2}}/{{s}^{2}}$and${{m}^{2}}/{{s}^{2}}$,where x and y are in metre and t is insecond. The acceleration of the particle att = 5 s is

A) zero

B) 8 m/${{m}^{2}}/{{s}^{2}}$

C) 20 m/$\frac{mgR\sin \theta }{{{B}^{2}}{{l}^{2}}}$

D) 40 m/$\frac{mgR\sin \theta }{B{{l}^{3}}}$

• question_answer31) A cart is moving horizontally along a straightline with constant speed 30 m/s. A projectileis to be fired from the moving cart in such away that it will return to the cart after thecart has moved 80 m. At what speed(relative to the cart) must the projectile be fired?$(Take\text{ }g=\text{ }10\text{ }m/{{s}^{2}})$

A) 10 m/s

B) $\frac{mgR\sin \theta }{B{{l}^{4}}}$

C) $\Omega$

D) None of these

• question_answer32) A particle has displacement of 12 m towardseast and 5 m towards, north then 6 mvertically upward. The sum of the sed is placements is

A) 12m

B) 10.04m

C) 14.31m

D) None of these

• question_answer33) A ray of light strikes a plane water-airinterface from within the water at an angleof incidence i. Which one of the following statements is correct?

A) If i is 90?, the angle of refraction will bethe critical angle

B) If i is equal to the critical angle, thereflected and refracted rays will be atright angles to each other

C) If i is less than the critical angle, all thelight is refracted and the angle of efraction is greater than i

D) If i is less than the critical angle, somelight is refracted and the angle ofreflection is less than the critical angle

• question_answer34) A ray of light from a denser medium strikes ararer medium at an angle of incidence i. Thereflected and refracted rays make an angle of$t=\infty$/2 with each other. If the angles ofreflection .end refraction are r and r, thenthe critical angle will be

A) $\frac{{{e}^{1/2}}}{{{e}^{1/2}}-1}$

B) $\frac{{{e}^{2}}}{{{e}^{2}}-1}$

C) $1-{{e}^{-1}}$

D) ${{e}^{-1}}$

• question_answer35) Two tuning forks A and B having a frequencyof 500 Hz each are placed with B to the rightof A. An observer is between the forks and ismoving towards B with a speed of 25 m/s.The speed of sound is 345 m/s and the windspeed is 5 m/s from A to B. Calculate thedifference in the two frequencies heard bythe observer.

A) 72.5 Hz

B) 55.6 Hz

C) 76.2 Hz

D) 80.9 Hz

• question_answer36) Wires A and B are made from the samematerial. A has twice the diameter and threetimes the length of B. If the elastic limits arenot reached, when each is stretched by thesame tension, the ratio of energy stored in Ato that in B is

A) 2 : 3

B) 3 : 4

C) 3 : 2

D) 6 :1

• question_answer37) The wave impedance of free space is

A) zero

B) 376.6${{y}_{1}}=a\sin \frac{2\pi }{\lambda }(vt-x)$

C) 1883${{y}_{2}}=b\sin \frac{2\pi }{\lambda }[(vt-x)+{{x}_{0}}]$

D) 3776${{x}_{0}}=(\lambda /2)$

• question_answer38) If a spring extends by x on loading, thenenergy stored by the spring is (if T is thetension in the spring and k is the springconstant)

A) $\left| a-b \right|$

B) $a+b$

C) $\sqrt{{{a}^{2}}+{{b}^{2}}}$

D) $\sqrt{{{a}^{2}}+{{b}^{2}}+2ab\,\cos \,x}$

• question_answer39) Two cars are moving on two perpendicularroads towards a crossing with uniformspeeds of 72 km/h and 36 km/h. If first carblows horn of frequency 280 Hz, then thefrequency of horn heard by the driver ofsecond car when line joining the car makesangle of 45? with the roads, will be

A) 321 Hz

B) 298 Hz

C) 289 Hz

D) 280 Hz

• question_answer40) Water is filled in a cylindrical container to aheight of3m.A hole is opened at a height of52.5 cm from the bottom. The ratio of thecross-sectional areas of the orifice and thebeaker is 0.1. The square of the speed of theliquid coming out from the orifice is te=10m/$\frac{{{\varepsilon }_{0}}A}{d}\left[ \frac{{{k}_{1}}}{{{k}_{2}}}+\frac{{{k}_{2}}{{k}_{3}}}{{{k}_{2}}+{{k}_{3}}} \right]$)

A) 50$\frac{{{\varepsilon }_{0}}A}{d}\left[ \frac{{{k}_{1}}}{{{k}_{2}}}+\frac{({{k}_{2}}+{{k}_{3}})}{{{k}_{2}}{{k}_{3}}} \right]$

B) 51 $\frac{{{\varepsilon }_{0}}A}{d}\left[ \frac{2}{{{k}_{1}}}+\frac{{{k}_{2}}{{k}_{3}}}{{{k}_{2}}+{{k}_{3}}} \right]$

C) 40.2 $\frac{{{\varepsilon }_{0}}A}{d}\left[ \frac{2}{{{k}_{1}}}+\frac{{{k}_{2}}+{{k}_{3}}}{{{k}_{2}}{{k}_{3}}} \right]$

D) 60m$1.81\times {{10}^{-5}}wb$

• question_answer41) A conducting wire of mass m slides downtwo smooth conducting bars, set at an angleto the horizontal as shown in the figure. Theseparation between the bars is equal to I.The system is located in the magnetic field B,perpendicular to the plane of the sliding wireand bars. The velocity of the wire is

A) $0.904\times {{10}^{-5}}wb$

B) $5.43\times {{10}^{-5}}wb$

C) $2\times {{10}^{-2}}{{m}^{2}}$

D) ${{10}^{6}}$

• question_answer42) An emf of 15 V is applied in a circuit containing 5 H inductance and 10$2.0\times {{10}^{10}}N$resistance. The ratio of the currents at time$2.0\times {{10}^{4}}N$ and c = 1 s is

A) $2.0\times {{10}^{8}}N$

B) $2.0\times {{10}^{6}}N$

C) $v=\frac{W}{q}=\frac{[M{{L}^{2}}{{T}^{-2}}]}{[AT]}$

D) $v=\frac{W}{q}=\frac{[M{{L}^{2}}{{T}^{-2}}]}{[AT]}$

• question_answer43) Two waves are passing through a region inthe same direction at the same time. If theequations of these waves are $\left[ M{{L}^{-2}}{{A}^{-2}} \right]$And $\left[ M{{L}^{2}}{{T}^{-2}}{{A}^{-2}} \right]$ then, the amplitude of the resulting wave for $\left[ M{{L}^{2}}{{T}^{-2}}{{A}^{-2}} \right]$is

A) $\left[ M{{L}^{2}}{{T}^{-3}}{{A}^{-2}} \right]$

B) $\frac{3}{2}m{{r}^{2}}$

C) $\frac{m{{r}^{2}}}{2}$

D) $\frac{3}{8}m{{r}^{2}}$

• question_answer44) A factory is served by a 220 V supply line. Ina circuit protected by a fuse marked 10 A,the maximum number of 100 W lamps inparallel that can be turned on is

A) 11

B) 22

C) 33

D) 66

• question_answer45) It takes 16 min to boil some water in anelectric kettle. Due to some defect it becomesnecessary to remove 10% turns of heatingcoil of the kettle. After repairs, how muchtime will it take to boil the same mass ofwater?

A) 17.7 min

B) 14.4 min

C) 20.9mm

D) 13.9 min

• question_answer46) Parallel plate capacitor is constructed usingthree different dielectric materials as shownin the figure. The parallel plates, acrosswhich a potential difference is applied are of area A m2 and separated by a distanced metre. The capacitance across AB is

A) $\frac{mx}{{{(m+1)}^{2}}}$

B) $\frac{mx}{{{(m-1)}^{2}}}$

C) $\frac{{{(m+1)}^{2}}}{m}x$

D) $\frac{{{(m-1)}^{2}}}{m}x$

• question_answer47) At what temperature is the rms velocity of ahydrogen molecule equal to that of anoxygen molecule at $47{}^\circ C$?

A) 80 K

B) -73 K

C) 3K

D) 20 K

• question_answer48) An iron rod of $0.2\text{ }c{{m}^{2}}$ cross-sectional area is subjected to a magnetizing field of $1200\text{ }A\text{ }{{m}^{-1}}.$ The susceptibility of iron is 599.The magnetic flux produced is

A) 0.904 Wb

B) $\lambda$

C) $\frac{\lambda }{4(\mu -1)}$

D) $\frac{2\lambda }{4(\mu -1)}$

• question_answer49) A coil of 100 turns and area $\frac{\lambda }{(\mu -1)}$is pivoted about a vertical diameter in auniform magnetic field and carries a currentof 5A. When the coil is held with its plane innorth-south direction, it experiences acouple of 0.33 Nm. When the plane iseast-west, the corresponding couple is0.4 Nm, the value of magnetic induction is [Neglect earths magnetic field]

A) 0.2 T

B) 0.3 T

C) 0.4 T

D) 0.05 T

• question_answer50) Two copper balls, each weighing 10 g, arekept in air 10 cm apart. If one electron from every $\frac{\lambda }{2(\mu -1)}$ atoms is transferred from one ballto the other, the coulomb force betweenthem is (atomic weight of copper is 63.5)

A) $\overset{0}{\mathop{A}}\,$

B) $8\times {{10}^{-4}}red$

C) $6\times {{10}^{-4}}red$

D) $4\times {{10}^{-4}}red$

• question_answer51) Which of the following are possible values of n, I and m for an atom having maximum value of $m=+2$?

A) $n=4,1=3,\text{ }m=+2$

B) $n=3,l=2,\text{ }m=-2$

C) $n=3,l=3,\text{ }m=+2$

D) $n=4,l=3,m=-2$

• question_answer52) A 1 L vessel initially contains 2.0, 0.5 and 0.0 moles of ${{N}_{3}}$, ${{H}_{2}}$ and $N{{H}_{3}}$ respectively. The system after attaining equilibrium has 0.2 mole of $N{{H}_{3}}$. The number of moles of ${{H}_{2}}$ in the vessel at equilibrium is

A) $0.3$

B) $0.4$

C) $0.2$

D) $1.8$

• question_answer53) For adsorption of a gas on a solid, the plot of log x/m vs log p is linear with slope equal to (n being whole number)

A) k

B) log k

C) n

D) 1/n

• question_answer54) Species acting both as Bronsted acid and base is

A) $HSO_{4}^{-}$

B) $N{{a}_{2}}C{{O}_{3}}$

C) $N{{H}_{3}}$

D) $O{{H}^{-}}$

• question_answer55) The rate constant of a reaction is $10.8\times {{10}^{-5}}$ $mol\,\,d{{m}^{-3}}\,{{s}^{-1}}$. The order of the reaction is

A) zero

B) 1

C) 2

D) 3

• question_answer56) The half-life period of a radioactive element is 140 days. After 560 days, 1 g of the element will be reduced to

A) $\frac{1}{2}g$

B) $\frac{1}{4}g$

C) $\frac{1}{8}g$

D) $\frac{1}{16}g$

• question_answer57) Mark the wrong statement.

A) K boils at the m.p of $KCl$

B) K is insoluble in molten $KCl$

C) K is extracted by electrolysis of fused $KOH$

D) K is extracted by reduction of molten $KCl$ by metallic Na

• question_answer58) The oxidation number and covalency of sulphur in sulphur molecule $({{S}_{8}})$ are

A) 0 and 2

B) + 6 and 8

C) 0 and 8

D) + 6 and 2

• question_answer59) The total number of isomers for ${{C}_{4}}{{H}_{8}}$ is

A) 5

B) 6

C) 7

D) 8

A) it has a cyclic structure

B) double bonds in it are very strong

C) resonance stabilised system is to be preserved

D) it has six hydrogen atoms

• question_answer61) Phenol is heated with phthalic anhydride in presence of cone ${{H}_{2}}S{{O}_{4}}$. The product gives pink colour with alkali. The product is

A) phenolphthalein

B) bakelite

C) salicylic acid

D) fluorescein

• question_answer62) When ethyl iodide is heated with dry silver oxide, it forms

A) ethyl alcohol

B) diethyl ether

C) silver ethoxide

D) ethyl methyl ether

• question_answer63) Oxidation of acetaldehyde with selenium dioxide produces

A) ethanoic acid

B) methanoic acid

C) glyoxal

D) oxalic acid

• question_answer64) The molal elevation constant of water is ${{0.52}^{o}}C$. The boiling point of 1.0 molal aqueous $KCl$ solution (assuming complete dissociation of $KCl$) should be

A) ${{100.52}^{o}}C$

B) ${{101.04}^{o}}C$

C) ${{99.48}^{o}}C$

D) ${{98.96}^{o}}C$

• question_answer65) The relative lowering of the vapour pressure is equal to the ratio between the number

A) solute molecules to the solvent molecules

B) solute molecules to the total molecules the solution

C) solvent molecules to the total molecules B in the solution

D) solvent molecules to the total number ions of the solute

• question_answer66) When a metal is burnt, its weight increased by 24 per cent. The equivalent weight of the metal will be

A) 2

B) 24

C) 33.3

D) 76

• question_answer67) Arsenic drugs are mainly used in the treatment of

A) jaundice

B) typhoid

C) syphilis

D) cholera

• question_answer68) Which compound/set of compounds is used in the manufacture of nylon-66?

A) $HOOC{{(C{{H}_{2}})}_{4}}COOH+{{H}_{2}}N{{(C{{H}_{2}})}_{6}}N{{H}_{2}}$

B) $C{{H}_{3}}=CH-C(C{{H}_{3}})=C{{H}_{2}}$

C) $C{{H}_{2}}=C{{H}_{2}}$

D)

• question_answer69) Benzophenone can be converted into benzene using

A) fused alkali

B) anhydrous $AlC{{l}_{3}}$

C) sodium amalgam in water

D) acidified dichromate

A) ${{C}_{6}}{{H}_{5}}-CO-C{{H}_{2}}-COOH$

B) ${{C}_{6}}{{H}_{5}}-CO-COOH$

C) $\underset{OH}{\mathop{\underset{|}{\mathop{{{C}_{6}}{{H}_{5}}-CH-COOH}}\,}}\,$

D) $\underset{N{{H}_{2}}}{\mathop{\underset{|}{\mathop{{{C}_{6}}{{H}_{5}}-CH-COOH}}\,}}\,$

• question_answer71) Amines are basic in character because they have

A) a lone pair of electrons on the nitrogen atom

B) a hydroxyl group in the molecule

C) replaceable hydrogen atom

D) tetrahedral structure

• question_answer72) Across the lanthanide series, the basicity of the lanthanide hydroxides

A) increases

B) decreases

C) first increases and then decreases

D) first decreases and then increases

• question_answer73) Which one of the following ions is colorless?

A) $C{{u}^{+}}$

B) $C{{o}^{2+}}$

C) $N{{i}^{2+}}$

D) $F{{e}^{3+}}$

• question_answer74) The correct IUPAC name of $C{{H}_{3}}C{{H}_{2}}CH(C{{H}_{3}})CH{{({{C}_{2}}{{H}_{5}})}_{2}}$ is

A) 4-ethyl-3-methylhexane

B) 3-ethyl-4-methylhexane

C) 4-methyl-3-ethylhexane

D) 2,4-diethylpentane

• question_answer75) 60 g of a compound on analysis produced 24 g carbon, 4 g hydrogen and 32 g oxygen. The empirical formula of the compound is

A) $C{{H}_{2}}{{O}_{2}}$

B) $C{{H}_{2}}O$

C) $C{{H}_{4}}O$

D) ${{C}_{2}}{{H}_{4}}{{O}_{2}}$

• question_answer76) Consider the isoelectronic series: ${{K}^{+}}$, ${{S}^{2-}}$, $C{{l}^{-}}$ and $C{{a}^{2+}}$ ,the radii of the ions decrease as

A) $C{{a}^{2+}}>{{K}^{+}}>C{{l}^{-}}>{{S}^{2-}}$

B) $C{{l}^{-}}>{{S}^{2-}}>{{K}^{+}}>C{{a}^{2+}}$

C) ${{S}^{2-}}>C{{l}^{-}}>{{K}^{+}}>C{{a}^{2+}}$

D) ${{K}^{+}}>C{{a}^{2+}}>{{S}^{2-}}>C{{l}^{-}}$

• question_answer77) In electrolysis of dil ${{H}_{2}}S{{O}_{4}}$ using platinum electrodes

A) ${{H}_{2}}$ is evolved at cathode

B) $S{{O}_{2}}$ is produced at anode

C) ${{O}_{2}}$ is obtained at cathode

D) $S{{O}_{2}}$ is produced at cathode

• question_answer78) The heats of neutralisation of four acids A, B, C and D when neutralised against a common base are 13.7, 9.4, 11.2 and 12.4 kcal respectively. The weakest among these acids is

A) A

B) B

C) C

D) D

• question_answer79) In which of the following reactions, the underlined substance has been oxidised?

A) $\underline{B{{r}_{2}}}+{{H}_{2}}S\xrightarrow{{}}\underline{2HBr}+S$

B) $\underline{2HgC{{l}_{2}}}+SnC{{l}_{2}}\xrightarrow{{}}\underline{H{{g}_{2}}C{{l}_{2}}}+SnC{{l}_{4}}$

C) $C{{l}_{2}}+\underline{2KI}\xrightarrow{{}}2KCl+\underline{{{I}_{2}}}$

D) $\underline{2C{{u}^{2+}}}+4{{I}^{-}}\xrightarrow{{}}\underline{C{{u}_{2}}{{I}_{2}}}+{{I}_{2}}$

• question_answer80) A real gas most closely approaches the behaviour of an ideal gas at

A) 15 atm and 200 K

B) 1 atm and 273 K

C) 0.5 atm and 500 K

D) 15 atm and 500 K

• question_answer81) Average KE of $C{{O}_{2}}$ at ${{27}^{o}}C$ is E. The average kinetic energy of ${{N}_{2}}$ at the same temperature will be

A) $E$

B) $22E$

C) $E/22$

D) $E/\sqrt{2}$

• question_answer82) The bond energies of $C-C$, $C=C$, $H-H$ and $C-H$ linkages are 350, 600, 400 and 410 kJ/mol respectively. The heat of hydrogenation of ethylene is

A) $-170\,kJ\,mo{{l}^{-1}}$

B) $-260\,kJ\,mo{{l}^{-1}}$

C) $-400\,kJ\,mo{{l}^{-1}}$

D) $-450\,kJ\,mo{{l}^{-1}}$

• question_answer83) The pH of ${{10}^{-3}}M\,NaOH$ is

A) $3$

B) $11$

C) $4$

D) $-11$

• question_answer84) The digestion of fats in the intestine is aided by

A) diffusion

B) protection

C) peptisation

D) emulsification

• question_answer85) When $Zn$ is treated with excess of $NaOH$, the product obtained is

A) $Zn{{(OH)}_{2}}$

B) $ZnOH$

C) $N{{a}_{2}}Zn{{O}_{2}}$

D) None of these

• question_answer86) Which of the following alkyl halides is hydrolysed by ${{S}_{N}}2$ mechanism?

A) ${{C}_{6}}{{H}_{5}}C{{H}_{2}}Br$

B) $C{{H}_{3}}Br$

C) $C{{H}_{2}}=CHC{{H}_{2}}Br$

D) ${{(C{{H}_{3}})}_{3}}CBr$

• question_answer87) Ethylene combines with sulphur monochloride to form

A) phosgene

B) mustard gas

C) methyl isocyanate (MIC)

D) lewisite

• question_answer88) Which of the following has the highest solubility product?

A) $KOH$

B) $CsOH$

C) $LiOH$

D) $RbOH$

• question_answer89) Fluorine is not prepared by general methods because

A) HF can be easily oxidized

B) HF cannot be easily oxidized

C) HF is highly poisonous

D) HF is a good conductor of electricity

• question_answer90) A major constituent of Portland cement (except lime) is

A) silica

B) alumina

C) iron oxide

D) magnesia

• question_answer91) Which statement is not correct?

A) A sigma bond is weaker than a $\pi$ -bond

B) A sigma bond is stronger than a $\pi$ -bond

C) A double bond is stronger than a sigma bond

D) A double bond is shorter than a single bond

• question_answer92) Which pair of the elements will have the same chemical properties?

A) $13,22$

B) $3,11$

C) $4,24$

D) $2,1$

• question_answer93) The rate constant for the reaction,$2{{N}_{2}}{{O}_{5}}\xrightarrow{{}}4N{{O}_{2}}+{{O}_{2}}$ is $3.0\times {{10}^{-5}}{{s}^{-1}}$. If the rate is $2.40\times {{10}^{-5}}\,mol\,{{L}^{-1}}\,{{s}^{-1}}$ then the concentration of ${{N}_{2}}{{O}_{5}}$ (in $mol\,{{L}^{-1}}$) is

A) $1.4$

B) $1.2$

C) $0.04$

D) $0.8$

• question_answer94) Which one of the following compounds has$s{{p}^{2}}$- hybridisation?

A) $C{{O}_{2}}$

B) $S{{O}_{2}}$

C) ${{N}_{2}}O$

D) $CO$

• question_answer95) Which of the following is used in dating archaeological findings?

A) $_{92}^{235}U$

B) $_{6}^{14}C$

C) $_{1}^{3}H$

D) $_{8}^{18}O$

• question_answer96) Standard reduction potentials for,$L{{i}^{+}}/Li;$ $Z{{n}^{2+}}/Zn;$${{H}^{+}}/{{H}_{2}}$and $A{{g}^{+}}/Ag$ are $-3.05,$ $-0.762,$ $0.00$ and $+0.80$V respectively. Which of the following has highest reducing capacity?

A) $Ag$

B) ${{H}_{2}}$

C) $Zn$

D) $Li$

• question_answer97) The ratio between the neutrons in C and Si with respect to atomic masses 12 and 28 is

A) $2:3$

B) $3:2$

C) $3:7$

D) $7:3$

• question_answer98) Fluorine reacts with water to give

A) HF and ${{O}_{2}}$

B) HF and $O{{F}_{2}}$

C) HF and ${{O}_{3}}$

D) HF, ${{O}_{2}}$ and ${{O}_{3}}$

• question_answer99) Identify Z in the following series.${{C}_{2}}{{H}_{5}}I\xrightarrow{Alc.\,KOH}X\xrightarrow{B{{r}_{2}}}Y\xrightarrow{KCN}Z$

A) $C{{H}_{3}}C{{H}_{2}}CN$

B) $NCC{{H}_{2}}-C{{H}_{2}}CN$

C) $BrC{{H}_{2}}-C{{H}_{2}}CN$

D) $BrCH=CHCN$

• question_answer100) 1-butyne on oxidation with hot alkaline $KMn{{O}_{4}}$ would yield

A) $C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH$

B) $C{{H}_{3}}C{{H}_{2}}COOH$

C) $C{{H}_{3}}C{{H}_{2}}COOH+C{{O}_{2}}+{{H}_{2}}O$

D) $C{{H}_{3}}C{{H}_{2}}COOH+HCOOH$

• question_answer101) The IV, V and IX cranial nerves are

A) olfactory, spinal accessory and vagus

B) trigeminal, vagus and glossopharyngeal

C) oculomotor, trigeminal and hypoglossal

D) pathetic (trochlear), trigeminal and glossopharyngeal

• question_answer102) The cranial capacity of Australopithecus was about 500 cc. It existed in

A) Miocene

B) Pliocene

C) Pleistocene

D) Both (a) and (b)

• question_answer103) Hormones differ from enzymes in that they are

A) found only in animals

B) found only in plants

C) not used up at all in metabolism

D) used up in metabolism

• question_answer104) Hyaluronic acid is a hetero polysaccharide and has acetyl glucosamine and glucoronic acid. It is a cementing material and found in

A) ovum and synovial fluid

B) vitreous humour

C) cerebrospinal fluid

D)  All of the above

• question_answer105) Mammals having traits of both reptiles and mammals are

A) monotremes

B)  marsupials

C) whales

D) bats

• question_answer106) In man, the sperms are stored and nourished in

A) testes

B) vasa efferentia

C) epididymis

D) spermatic cord

• question_answer107) The major excretory product of arthropods is

A) ammonia

B) urea

C) uric acid

D) trimethylamine oxide

• question_answer108) The famous book origin of species was written by Charles Darwin in

A) 1809

B) 1859

C) 1885

D) 1871

• question_answer109) Test tube baby implies

A) fertilisation and development of ovum in test tube

B)  fertilisation in test tube and development in uterus

C) fertilisation in uterus and development in test tube

D)   fertilisation and development in uterus

• question_answer110) The enzymes responsible for the digestion of starch in food of man is present in

A) salivary and gastric secretions

B) salivary and pancreatic secretions

C) gastric and pancreatic secretions

D) gastric and duodenal secretions

• question_answer111) What is the main difference between RBCs of human and frog?

A) Human RBCs are non-nucleated

B) Haemoglobin is found only in human RBCs

C) Human RBCs have nucleus

D) Human RBCs are multi-nucleated

• question_answer112) Wauchereria bancrofti is transmitted by

A) sandfly

B) tse-tse fly

C) Anopheles mosquito

D) Culex mosquito

• question_answer113) It is not possible to create life because

A) we can not match creativity and intelligence of God

B)  nature of molecular organisation is complex and not fully known

C)  all mode of life are not fully known

D)  most of modes are known except a few

• question_answer114) Ageing is characterised by

A) decline in metabolic activity

B) increased metabolic activity

C) increased anabolism

D) increased catabolism

• question_answer115) Which organ of the body acts as filter of  blood?

A) Bone marrow

B)  Liver

C) Lymph glands

D)  Spleen

• question_answer116) Honey has three sugars, they are

A)  glucose, fructose and lactose

B) glucose, galactose and inulin

C)  dextrose, laevulose and maltose

D)  dextrose, lactose and ribose

• question_answer117) The clitellum of earthworm is for

A) reproduction

B) helping in respiration

C) helping in locomotion

D) forming a wall of cocoon

• question_answer118) Trophocytes, mycetocytes, oenocytes and urate cells are found in the fat body of cockroach. Which statement is correct?

A) Trophocytes contain reserve food

B) Mycetocytes contain symbiotic bacteria

C) Oenocytes sex wax and urate cells contain uric acid

D)  All of the above

• question_answer119) Auxetic growth is increase in

A) cell volume only

B)  cell number only

C)  fatty tissue

D)  intercellular material

• question_answer120) The epithelial cells lining the stomach of vertebrates is protected from damage by HCl because

A) HCl is too dilute

B) the epithelial cells are resistant to the action of HCl

C)  HCl is neutralised by alkaline gastric juice

D)  the epithelial cells are covered with a mucous secretion

• question_answer121) Reason, will, memory, intelligence and emotions are governed by

A) cerebellum

B) mid brain

C) medulla oblongata

D) cerebral hemispheres

• question_answer122) The  drugs  which  do  not  develop  physiological dependence are

A) opiates

B) sedatives

C) stimulants

D) hallucinogens

• question_answer123) In Ascaris, eggs are fertilised in the

A) vagina

B) oviducts

C) lower pans of uteri

D)  seminal vesicles

• question_answer124) Iron free compound of haemoglobin is

A)  globin

B)  haematin

C) bilirubin

D) haemotoxin

• question_answer125) The expulsion of completely developed foetus from the uterus is known as

A) ovulation

B) oviposition

C) gestation

D) parturition

• question_answer126) The banding pattern of chromosome three and six of human beings and chimpanzee show that they had

A) different origin

B) common origin

C) same number of chromosomes

D) similar blood groups

• question_answer127) Blood of Pheretima is

A) blue with haemocyanin in corpuscles

B) blue with haemoglobin in corpuscles

C) red with haemoglobin in corpuscles

D) red with haemoglobin in plasma

• question_answer128) If parathyroid gland degenerates which activity is disturbed?

A) Growth

B) Calcium concentration

C) Potassium concentration

D) Sodium concentration

• question_answer129) Some times immune system of body start behaving against the own body or self. This lead to

A) autoimmune disease

B) bacterial disease

C) viral disease

D) hereditary disease

• question_answer130) Genetic drift is the elimination of

A) individuals

B) chromosomes

C) species

D) gene of some original characteristic of a species due to epidemics

• question_answer131) Nucleosome gives beaded appearance to chromosomes. They help in packing of DNA in the chromosomes. A nucleosome has

A) about two turns of DNA

B) 8 histone molecules (2 molecuies each of ${{H}_{2}}A,\text{ }{{H}_{2}}B,\text{ }{{H}_{3}}$and ${{H}_{4}}$)

C) 166 nitrogen base pairs

D) All of the above

• question_answer132) Pesticides ingredient which killed 2,500 people in Bhopal gas tragedy in 1984 is

A) mustard gas

B) DDT

C) methyl isocyanate

D) carbon tetrachloride

• question_answer133) According to Haeckels biogenetic law

A) development of individual metazoan shows embryonic characters of ancestors

B) ontogeny repeats phylogeny

C) germplasm is immortal

D) every organism is produced by its parents

• question_answer134) Which of the following pair is characterized by swollen lip, thick pigmented skin of hands and legs and irritability?

A) Thiamine  - Beri beri

B) Protein - Kwashiorkor

C) Nicotinamide - Pellagra

D) Iodine - Goitre

• question_answer135) Ascaris protects itself from effect of digestive enzymes of the host by means of

A)  antienzymes

B)  cuticle

C)  Both (a) and (b)

D)  mucus

• question_answer136) Which set includes all homologous organs?

A) Hind legs of dogs, duck and kangaroo

B) Wings of bat, butterflies and birds

C) String of honey bee, scorpion and mosquito

D) Tail of rat, peacock and earthworm

• question_answer137) Which stages of Plasmodium are likely to be found in the stomach of a female Anopheles. Which has just taken a blood meal from a patient of malaria?

A) Merozoites,      trophozoites      and gametocytes

B)  Sporozoites, trophozoites and gametes

C) Merozoites, gametocytes and zygotes

D) Gametocytes, ookinetes and gametes

• question_answer138) Which of the following cells have lost their capacity to divided in order to get specialised?

A) Muscle cells and nerve cells

B) Bone marrow cells and liver cells

C) Kidney and intestinal cells

D) Retinal cells

• question_answer139) The blood flow through human heart visualised by

A) magnetic resonance imaging

B) DSA

C) sonography

D) Both (a) and (b)

• question_answer140) Chromosome   are   best   observed ai metaphase. For studying the shape, best stage is

A) meca phase

B) anaphase

C)  telophase

D) late prophase

• question_answer141) Selection will not eliminate lethal recessive gene from a large population because

A) there are always some heterozygotes carriers of the alleles

B)  gene fixation occurs in populations

C)  heterozygotes are at a selective advantage

D)  rate of mutation to the lethal allele is high

• question_answer142) Population 1 and II are growing in the same habitat and are morphologically similar but these are inter sterile. In term of biological concept   of  species,   they   may   be considered as

A) one species

B) two distinct species

C) two sibling species

D) None of the above

• question_answer143) Diagrammatic   representation   of   all chromosomes at metaphase is called

A) ideogram

B) cardiogram

C) karyotype

D) leotype

• question_answer144) Which  one  is  the  most  important characteristic feature of birds?

A) Forelimbs modified into wings

B) Bipedal vertebrate

C) Homoiothermal

D) Exoskeleton of feathers

• question_answer145) Inter-phalangial  joints are also called as

A) fixed joints

B) hinge joints

C)  movable joints

D) straight joints

• question_answer146) The protoplasmic segment of a striated muscle fibre is termed as

A) sarcoplasm

B) sarcomere

C) neuromere

D) metamere

• question_answer147) Steroid hormones are similar in structure to

A) tryosine

B) cholesterol

C) coenzyme-A

D) glycerol

• question_answer148) Meroblastic cleavage refers to which type of division of egg?

A) Complete

B) Spiral

C) Incomplete

D) Horizontal

• question_answer149) Outer covering of cartilage is called

A) perichondrium

B) periosteum

C) endostemum

D) perilonertum

• question_answer150) Toxic substances are detoxified in human body in

A) kidney

B) lungs

C) liver

D) stomach

• question_answer151) Pyrenoids are centre of

A) fat storage

B) starch storage

C) protein formation

D) enzyme formation

• question_answer152) Damping off of seedling is due to

A) nematode

B) Albugo Candida

C) Fusarium oxysporium

D) Pythium debaryanum

• question_answer153) Sulphur containing amino acids are

A) valine, lysine and cysteine

B) tryptophan, glutamic acid and aspartic acid

C) citrulline, methionine and giumeric acid

D) cysreine, cystine and methionine

• question_answer154) Which one of the following not used in production of yoghurt?

A) Streptococcus lact is

B) Streptococcus the rmophilus

C) Lactobacillus vulgaricus

D) Acetobacter aceti

• question_answer155) Which of the following statements is correct?

A) Xylem is made of all living cells

B) Xylem is made of living and non-living cells

C) Xylem is made of non-living cells

D) Xylem does not contain cells

• question_answer156) Age of the plant can be calculated by

A) measuring its height

B) counting leaf bases

C) counting annual rings

D) All of the above

• question_answer157) The cell cultured in vitro gives rise to complete plant. This ability of plant cell is known as

A) growth

B) development

C) regeneration

D) totipotency

• question_answer158) Cohesion force theory was proposed by

A) JC Bose (1850)

B) Dixon and Jolly (1950)

C) Benson and Calvin (1855)

D) Dixon and Jolly (1894)

A) primitive organised organisms

B) extinct organisms

C) organisms with ancestral characters and time has not changed them

D) connecting link between two groups

• question_answer160) The process of photosynthesis is

A) reductive, exergonic and catabolic

B) reductive, endergonic and catabolic

C) reductive, exergonic and anabolic

D) reductive, endergonic and anabolic

• question_answer161) Unit of distance between genes in a chromosome is known as

A) DNA

B) Morgan

C) Centimorgan

D) Spacer

• question_answer162) Which is the correct sequence of code transfer involved in the formation of polypeptide?

A) DNA-rRNA-rRNA-mRNA

B) tRNA-DNA-mRNA-rRNA

C) mRNA-fRNA-DNA-Amino acid

D) DNA-mRNA-fRNA-Amino acid

• question_answer163) Study of pollen grains is called

A) Spermology

B) Anatomy

C) Palynology

D) Aerobiology

• question_answer164) Golgi complex is specialised for

A) energy transduction

B) glycosidation of lipids

C) digestion

D) conversion of energy

• question_answer165) Which is not a intracellular compartment in the cell?

A) Nucleus

B)  Mitochondria

C) Chloroplast

D) Centriole

• question_answer166) The conservation of local (endemic) varieties of crop is must because

A) these are source of gene for genetic diversity

B)  these are high yielding and nutritious

C) we want to conserve all plants and animals of the past for our knowledge

D)  All of the above

• question_answer167) The term taxonomy was coined by

A)  de Candolle

B)  Linnaeus

C) John Ray

D) Bauchin

• question_answer168) A lichen responsible for forest fire is

A)  Lecanora

B)  Usnea

D)  Ramalina

• question_answer169) The carbon dioxide acceptor in ${{\text{C}}_{\text{3}}}\text{-}$plants is

A) phosphoenol pyruvate (PEP)

B) ribulose 1, 5-diphosphate (RuDP)

C) phosphoglyceric acid

D) ribulose mono phosphate CRuMP)

• question_answer170) Fusion of two vegetative nuclei represents the phenomenon of

A) parasexual reproduction

B) partheno apogamy

C) apogamy

D) apospory

• question_answer171) In a given RNA segment AUG. ACC, UGG, ACC, CCA, UCA, if the first base gets mutated the effect of this on coding by this RNA segment will result in

A) a change of first amino acid only

B)  a complete change in the types as well as  the sequence of almost all amino acids

C)  no change in the sequence of amino acids

D)  one amino acid less in protein chain

• question_answer172) When certain solute panicles are added to the pure solvent, the diffusion pressure of the resulting solution lowered by an amount repressed in term of

A) Turgor Pressure (TP)

B) Diffusion Pressure (DP)

C) Osmotic Pressure (OP)

D) Diffusion Pressure Deficit (DPD)

• question_answer173) The callus culture and suspension culture produce plantlets. They are distinguished by

A) callus culture is in vitro while suspension is in vivo

B)   in callus culture shoots are organized whereas in suspension culture somatic embryo is organized

C)  in callus culture hormone is present but in suspension culture hormone is absent

D)  None of the above

• question_answer174) Angiosperms differ from gymnosperms in having

B) tracheids

C) fruit(ovary)

D) cotyledons

• question_answer175) Undecomposed organic matter in soil is called

A)  litter

B) humus

C) mull

D) duft

A)  thin-walled,     less     protoplasmic, isodiametric and nucleated

B)  thin-walled,   densely   protoplasmic, isodiametric  and nucleated

C)  thick-walled,     less     protoplasmic, isodiametric and nucleated

D)  thick-walled,   densely   protoplasmic, isodiametric and non-nucleated

• question_answer177) Tubulin protein occur in

A) enzymes of Krebs cycle

B) rough endoplasmic reticulum

C) microtubules

D) microfilaments

• question_answer178) Vaccines prepared by genetic engineering are safe to man because they are

A) least active form of virus

B) active form of virus

C) coat protein formed as antibody

D) All of the above

• question_answer179) The principle agent of alcoholic fermentation and bread making is

A) Schizosaccharomyces octosporus

B) Saccharomyces cerevisiae

C) Sacc/iaromyces ellipsiodeus

D) None of the above

• question_answer180) Which one of the following is a pseudo cereals?

A) Wheat

B) Rice

C)  Buck wheat

D) Pisum sativum

• question_answer181) Carrying capacity of a population is determined by its

A) population growth rate

B) birth rate

C) death rate

D) limiting resource

A) gradual, convergent, directional and continuous process

B)  series of biotic communities that appear gradually in a barren area

C)  orderly process of community change till stability

D)  All of the above

• question_answer183) Ovule is inverted with body fused to funicle, micropyle lying close to hilum and facing the placenta, it is

A)  hemitropous

B)  orthon-opous

C)  anatropous

D)  campylotropous

• question_answer184) During elongation of polypeptide chain, the sigma factor

A) is released to take part again

B) is retained and performs special function

C) its function is not known

D) is used during the closing of chain

• question_answer185) Which one of the following belong to the same category?

A) Cashewnut, coconut and chestnut

B) Coconut, orange and tomato

C) Betelnut, chestnut and coconut

D) Mango, almond and coconut

• question_answer186)  The basic unit of classification is

A)  species

B)  taxon

C)  category

D)  sub-species

• question_answer187) As the rice deficient in vitamin-A, the rice which have the vitamin-A transformed by Agro bacrerium. Its common name is

A)  basmati rice

B) white rice

C) golden rice

D) yellow rice

• question_answer188) Operon unit consists of

A) regulator, operator and repressive gene

B) regulator, structural and operator gene

C) regulator,  structural,  operator  and promoter gene

D)  regulator, structural and promoter gene

• question_answer189) Artificial application of auxins like IAA, IBA and NAA to unpollinated pistils can form

A) fruits with much flesh

B) larger fruits

C) sweet fruits

D) seedless fruits

• question_answer190) Site of formation of ribosomal precursor or ribosomal subunits in cell is

A) nucleus

B)  nucleolus

C) nucleus body

D) stroma

A) Phosphorus

B)  Carbon

C) Water

D) Nitrogen

• question_answer192) Zygospore of Spirogyra, at the time of meiosis, is divided into four nuclei. How many nuclei degenerate out of these four?

A)  One

B)  Two

C)  Three

D)  Four

• question_answer193) Sometimes, the fern plant arises from fern prothallus without fertilisation. This is an example of

A) apospory

B) apogamy

C) parthenocarpy

D)  gametogenesis

A) flower bud

B)  axillary bud

C)  thalamus

D)  ovule

A) monoecious

B)  bisexual

C)  dioecious

D)  hermaphrodite

A)  Atropa

B)  Opium

C)  Rauwolffia

D)  Solanum

• question_answer197) Which part of embryo comes out first during seed germination?

B)  Plumule

C)  Hypocotyl

D)  Epicotyl

A) vessels

B)  tracheids

C)  fibres

D)  parenchyma

• question_answer199) In rainy season, door get swelled due to

A) imbibitions

B)  diffusion

C) transpiration

D) respiration

A)  once

B)  twice

C)  many times

D)  never