# Solved papers for JCECE Medical JCECE Medical Solved Paper-2002

### done JCECE Medical Solved Paper-2002

• question_answer1) A long spring is stretched by 2 cm. Its potential energy is U. If the spring is stretched by 10 cm, the potential energy stored in it will be:

A) $\frac{U}{25}$

B) $\frac{U}{5}$

C) $3U$

D) $25U$

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• question_answer2) The coefficient of restitution e for a perfectly elastic collision is:

A) 1

B) zero

C) infinite

D) $-1$

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• question_answer3) A soap bubble is given negative charge. Then its radius:

A) decreases

B) increases

C) remains unchanged

D) nothing can be said because sufficient information is not available

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• question_answer4) Source of energy in sun is caused by :

A) fusion of heavy nuclei

B) fission of heavy nuclei

C) fusion of hydrogen nuclei

D) fission of hydrogen nuclei

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• question_answer5) A particle moves along a circular path under the action of a force. The work done by the force is:

A) positive and non-zero

B) negative and non-zero

C) zero

D) none of the above

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• question_answer6) A particle is moving in a circle with uniform speed. It has constant:

A) velocity

B) acceleration

C) kinetic energy

D) displacement

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• question_answer7) If $|\vec{A}+\vec{B}|=|\vec{A}-\vec{B}|,A$and B are finite then

A) $\overset{\to }{\mathop{A}}\,\text{ }is\text{ }parallel\text{ }to\text{ }\overset{\to }{\mathop{B}}\,$

B) $\overset{\to }{\mathop{A}}\,\text{ }is\text{ }anti-parallel\text{ }to\text{ }\overset{\to }{\mathop{B}}\,$

C) $\overset{\to }{\mathop{A}}\,\text{ }and\,\,\overset{\to }{\mathop{B}}\,\,are\,\,equal\,\,in\,\,magnitude$

D) $\overset{\to }{\mathop{A}}\,\text{ }and\overset{\to }{\mathop{B}}\,are\,\,mutually\,\,perpendicular$

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• question_answer8) A number of small drops of mercury adiabatically coalesce, to form a single drop. The temperature of the drop:

A) increases

B) remains same

C) decreases

D) depend on size

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• question_answer9) Light waves can be polarised as they are :

A) transverse

B) of high frequency

C) longitudinal

D) reflected

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• question_answer10) In which process the speed of transfer of heat is maximum?

A) Conduction

B) Convection

C) Radiation

D) In all these heat is transferred with the same speed

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• question_answer11) Youngs experiment establishes that:

A) light consists of waves

B) light consists of particles

C) light is neither of particles nor waves

D) light consists of particles and waves both

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• question_answer12) A heating coil is labelled 100 W, 220V. The coil is cut into two equal pieces and the two pieces are joined in parallel to the same source. The energy now liberated per second is:

A) 400 J

B) 25 J

C) 50 J

D) 200J

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• question_answer13) Bending of light rays around the edges of an obstacle is known as:

A) refraction

B) polarisation

C) diffraction

D) reflection

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• question_answer14) A convex lens of focal length 40cm is in contact with a concave lens of focal length 25 cm. The power of the combination of the two lenses is:

A) $-1.5D$

B) $~-6.5\text{ }D$

C) 6.5 D

D) 6.67 D

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• question_answer15) Particle A moves in S-N direction and particle B moves in W-E direction. Then the velocity-of L particle A with respect to B is:

A) N-W direction

B) N-E direction

C) S-W direction

D) S-E direction

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• question_answer16) Weightlessness experienced while orbiting the earth in space ships is the result of:

A) inertia

B) acceleration

C) zero gravity

D) centre of gravity

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• question_answer17) If one mole of a monoatomic gas $(\gamma =5/3)$is mixed with one mole of a diatomic gas $(\gamma =7/5),$ the value of $\gamma$for the mixture is:

A) 1.40

B) 1.50

C) 1.53

D) 3.07

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• question_answer18) Which of the following statements is wrong?

A) Sound travels in straight line

B) Sound travels as waves

C) Sound is a form of energy

D) Sound travels faster in vacuum than in air

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• question_answer19) If momentum of a certain body is increased by 50%, then increases in the KE of the body will be:

A) 25%

B) 50%

C) 100%

D) 125%

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• question_answer20) A uniform chain of length L and mass M is lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table, if g is the acceleration due to gravity the work required to pull the hanging part of the chain on the table is:

A) $MgL$

B) $\frac{1}{3}MgL$

C) $\frac{1}{9}MgL$

D) $\frac{1}{18}MgL$

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• question_answer21) In the arrangement shown in the figure for vertical oscillations of the mass $m,$the period is: A) $T=2\pi \sqrt{\frac{m}{{{k}_{1}}+{{k}_{2}}}}$

B) $T=2\pi \sqrt{\frac{{{k}_{1}}+{{k}_{2}}}{m}}$

C) $T=2\pi \sqrt{\frac{m({{k}_{1}}+{{k}_{2}})}{{{k}_{1}}+{{k}_{2}}}}$

D) $T=2\pi \sqrt{\frac{mg}{{{k}_{1}}+{{k}_{2}}}}$

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• question_answer22) A person completes half of its journey with speed${{v}_{1}}$and rest half with speed ${{v}_{2}}.$The average speed of the person is:

A) $v=\frac{1}{2}({{v}_{1}}+{{v}_{2}})$

B) $v=\frac{2{{v}_{1}}{{v}_{2}}}{{{v}_{1}}+{{v}_{2}}}$

C) $v=\frac{{{v}_{1}}{{v}_{2}}}{{{v}_{1}}+{{v}_{2}}}$

D) $v=\sqrt{{{v}_{1}}{{v}_{2}}}$

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• question_answer23) A particle moves along a straight line such that its displacement at any time t is given by $s={{t}^{3}}-3{{t}^{2}}+2m.$The displacement when the acceleration bec6mes zero is:

A) zero

B) 2 m

C) 3m

D) -2m

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• question_answer24) $[M{{L}^{2}}{{T}^{-3}}]$represents the dimensions of:

A) pressure

B) energy

C) power

D) force

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• question_answer25) The time period of a simple pendulum in a lift descending with constant acceleration g is:

A) $T=2\pi \sqrt{\frac{l}{8}}$

B) $T=2\pi \sqrt{\frac{l}{2g}}$

C) zero

D) infinite

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• question_answer26) A transverse wave is given by $y=A\sin 2\pi \left( \frac{t}{T}-\frac{x}{\lambda } \right).$ The maximum particle velocity is equal to 4 times the wave velocity, when:

A) $\lambda =2\pi \,A$

B) $\lambda =\frac{1}{2}\pi A$

C) $\lambda =\pi A$

D) $\lambda =\frac{1}{4}\pi A$

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• question_answer27) A tuning fork gives 4 beats with 50 cm length of a sonometer wire. If the length of the wire is shortened by I cm the number of beats is still the same. The frequency of the fork is:

A) 396 Hz

B) 400 Hz

C) 404 Hz

D) 384 Hz

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• question_answer28) Electron volt is a unit of:

A) potential

B) charge

C) power

D) energy

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• question_answer29) Light of frequency,$v$is incident on a certain photoelectric substance with threshold frequency${{v}_{0}}.$The work function for the substance is:

A) $hv$

B) $h{{v}_{0}}$

C) $h(v-{{v}_{0}})$

D) $h(v+{{v}_{0}})$

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• question_answer30) For principal quantum number$n=3,$the possible values of orbital quantum number $l$are:

A) 1, 2, 3

B) 0, 1, 2, 3

C) 0, 1, 2

D) $-1,0,+1$

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• question_answer31) Certain radioactive substance reduces to 25% of its value in 16 days. Its half-life is:

A) 32 days

B) 8 days

C) 64 days

D) 28 days

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• question_answer32) Penetrating power of X-rays does not depend on:

A) wavelength

B) energy

C) potential difference

D) current in the filament

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• question_answer33) The ratio of resistance for forward to reverse bias of $p-n$junction is:

A) ${{10}^{2}}:1$

B) ${{10}^{-2}}:1$

C) $1:{{10}^{-4}}$

D) $1:{{10}^{4}}$

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• question_answer34) If a current flows through an infinitely long straight wire, the magnetic field produced at a point 1m away from it, is:

A) $2\times {{10}^{-3}}T$

B) $2\times {{10}^{-1}}T$

C) $2\times {{10}^{-1}}T$

D) $2\pi \times {{10}^{-6}}T$

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• question_answer35) Two circular discs A and B with equal radii are blackened. They are heated to same temperature and are cooled under identical conditions. What inference do you draw from their cooling curves? A) A and B have same specific heats

B) Specific heat of A is less

C) Specific heat of B is less

D) Nothing can be said

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• question_answer36) When a charged particle, travelling with unifrom speed enters a uniform magnetic field perpendicularly then. Its kinetic energy:

A) remains constant

B) increases

C) decreases

D) becomes zero

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• question_answer37) A circular coil of radius 4 cm and number of turns 20 carries a current of 3 A. It is placed in a magnetic field of 0.5 T. The magnetic dipole moment of the coil is:

A) $\text{0}\text{.60 A}{{\text{m}}^{\text{2}}}$

B) $~0.45\text{ A}{{\text{m}}^{2}}$

C) $\text{ }\!\!~\!\!\text{ 0}\text{.30 A}{{\text{m}}^{\text{2}}}$

D) $~0.15A{{m}^{2}}$

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• question_answer38) In a circuit 5% of total current passes through a galvanometer. If resistance of the galvanometer is G, then value of the shunt is:

A) 19 G

B) 20 G

C) G/20

D) G/19

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• question_answer39) In a moving coil galvanometer, deflection $\text{o }\!\!|\!\!\text{ }$ and current I flowing through it are related by:

A) $I\propto \tan \text{o }\!\!|\!\!\text{ }$

B) $I\propto \text{o }\!\!|\!\!\text{ }$

C) $I\propto \text{o}{{\text{ }\!\!|\!\!\text{ }}^{2}}$

D) $I\propto 1/\text{o }\!\!|\!\!\text{ }$

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• question_answer40) A solenoid of length$l$metre has self-inductance L henry. If number of turns are doubled, its self inductance:

A) remains same

B) becomes 2 L henry

C) becomes 4 L henry

D) becomes$\frac{L}{\sqrt{2}}$ henry

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• question_answer41) The voltage of an AC supply varies with time (t) as $V=120\sin 100\,\pi t\,\cos 100\,\pi t.$The maximum voltage and frequency respectively are:

A) $120V,\text{ }100\text{ }Hz$

B) $120/\sqrt{2}\,V,100\,Hz$

C) $60\,V,\,200\,Hz$

D) $60\,V,\,100\,Hz$

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• question_answer42) Two point charges of$+\,3\mu C$ and $-\,3\mu C$are at a distance $2\times {{10}^{-3}}\,m$apart from each other. The electric field at a distance of 0.6 m from the dipole in broadside-on position is:

A) $150\,N{{C}^{-1}}$

B) $250\,N{{C}^{-1}}$

C) $60\,N{{C}^{-1}}$

D) $35\,N{{C}^{-1}}$

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• question_answer43) Two parallel large thin metal sheets have equal surface charge densities $(\sigma =26.4\times {{10}^{-12}}C/{{m}^{2}})$of opposite signs. The electric field between these sheets is:

A) $1.5\,N/C$

B) $1.5\times {{10}^{-10}}N/C$

C) $3\,N/C$

D) $3\times {{10}^{-10}}N/C$

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• question_answer44) N identical spherical drops are charged to the same potential V. They combine to form a bigger drop. The potential of the big drop will be:

A) $V{{N}^{1/3}}$

B) $V{{N}^{2/3}}$

C) $V$

D) $VN$

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• question_answer45) Three condensers of capacitance 2uF each are connected in series. The resultant capacitance is:

A) $6\mu F$

B) $3/2\,\mu F$

C) $2/3\,\mu F$

D) $5\,\mu F$

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• question_answer46) Two electric bulbs rated ${{P}_{1}}$watt, V volt and ${{P}_{2}}$watt, V volt are connected in parallel and V volt supply is applied to them. The total power will be:

A) ${{P}_{1}}+{{P}_{2}}$

B) $\sqrt{{{P}_{1}}{{P}_{2}}}$

C) $\frac{{{P}_{1}}{{P}_{2}}}{{{P}_{1}}+{{P}_{2}}}$

D) $\frac{{{P}_{1}}+{{P}_{2}}}{{{P}_{1}}{{P}_{2}}}$

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• question_answer47) A hole is in the bottom of the tank having water. If total pressure at the bottom is 3 atm ($(1\,atm={{10}^{5}}\,N{{m}^{-2}}),$1 then velocity of water flowing from hole is:

A) $\sqrt{400}\,m{{s}^{-1}}$

B) $\sqrt{600}\,m{{s}^{-1}}$

C) $\sqrt{60}\,m{{s}^{-1}}$

D) $\sqrt{40}\,m{{s}^{-1}}$

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• question_answer48) A fluid of volume 1 L is subjected to a pressure change of ${{10}^{7}}N/{{m}^{2}}.$ As a result its volume changes by $0.4\,c{{m}^{3}}.$ The bulk modulus of the fluid is:

A) $2.5\times {{10}^{10}}\,N/{{m}^{2}}$

B) $2.5\times {{10}^{11}}\,N/{{m}^{2}}$

C) $2.5\times {{10}^{9}}\,N/{{m}^{2}}$

D) $2.5\times {{10}^{15}}\,N/{{m}^{2}}$

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• question_answer49) Stationary waves are so called because in them:

A) the particles of the medium are not disturbed at all

B) the particles of the medium do not execute SHM

C) Particles do not correspond flow of energy along the wire

D) the interference effect cannot be observed

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• question_answer50) If the degrees of freedom of the molecules of a gas are n, the ratio of its two specific heats $({{C}_{P}}+{{C}_{V}})$will be:

A) $1+\frac{2}{n}$

B) $1-\frac{2}{n}$

C) $1+\frac{1}{n}$

D) $2-\frac{1}{n}$

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• question_answer51) In a radioactive decay:

A) $\alpha$ then$\beta$ and then$\gamma$emitted

B) $\alpha$ or $\beta$ and then$\gamma$emitted

C) $\alpha$and$\beta$ and $\gamma$emitted simultaneously

D) $\alpha$and$\beta$emitted simultaneously

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• question_answer52) The work function of a metal is 1 eV. If$\text{3000}\,\overset{\text{o}}{\mathop{\text{A}}}\,$ wavelength light is incident, the value of stopping voltage is:

A) 1V

B) $\text{3}\text{.75}\,\text{V}$

C) 3.2 V

D) 0.75 V

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• question_answer53) Equation for a real gas is $\left( P+\frac{a}{{{V}^{2}}} \right)(V-b)=RT$ Where$P=$pressure, $V=$volume, a, b and R constants, dimensional formula of a is:

A) ${{L}^{6}}$

B) ${{M}^{1}}{{L}^{-1}}{{T}^{-2}}$

C) ${{M}^{1}}{{L}^{5}}{{T}^{-2}}$

D) ${{L}^{3}}$

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• question_answer54) A monoatomic ideal gas is compressed to its 1/8 volume adiabatically at $17{{\,}^{o}}C.$ Temperature after compression will tie:

A) $34{{\,}^{o}}C$

B) $17{{\,}^{o}}C$

C) $136{{\,}^{o}}C$

D) $887{{\,}^{o}}C$

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• question_answer55) Which quantity remains constant in adiabatic process?

A) Work

B) Heat

C) Temperature

D) All of these

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• question_answer56) Which formula is incorrect for root mea square velocity?

A) $\sqrt{\frac{2RT}{M}}$

B) $\sqrt{\frac{3PV}{M}}$

C) $\sqrt{\frac{3d}{P}}$

D) $\sqrt{\frac{2KE}{M}}$

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• question_answer57) If the number of molecules of hydrogen is double to that of oxygen, at the same temperature, the ratio of their average KE pa molecule is:

A) $1:1$

B) $2:3$

C) $1:2$

D) $1:4$

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• question_answer58) A liquid boils at that temperature at which the pressure of saturated vapour is:

A) more than atmospheric pressure

B) double to atmospheric pressure

C) equal to atmospheric pressure

D) less than atmospheric pressure

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• question_answer59) What is the value of $\frac{PV}{T}$ for a 1 mote of gas?

A) $4.2\times {{10}^{7}}cal/K$

B) $4.2\,cal/K$

C) $8.31\,cal/K$

D) $2\,cal/K$

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• question_answer60) If a proton totally converts into energy, the value of energy will be:

A) 190 MeV

B) 931 MeV

C) 93.1 MeV

D) 931 J

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• question_answer61) Experimental verification of matter waves was done by:

A) de-Broglie

B) Rutherford

C) Bohr

D) Davisson and Germer

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• question_answer62) In the following nuclear reaction $_{2}H{{e}^{3}}+{{\,}_{Z}}{{X}^{a}}\xrightarrow{{}}{{\,}_{Z+1}}{{Y}^{a+2}}+Q.$What is Q?

A) Neutron

B) Proton

C) Positron

D) Electron

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• question_answer63) For the reaction ${{\,}_{1}}{{H}^{2}}+{{\,}_{1}}{{H}^{2}}\xrightarrow{{}}{{\,}_{2}}H{{e}^{4}}+v+\text{Energy,}$ what is the required condition?

A) High temperature and pressure

B) High temperature and low pressure

C) Low temperature and high pressure

D) High temperature only

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• question_answer64) Work function of photoelectric metal is 3.13 eV. Threshold frequency is:

A) $4\times {{10}^{11}}\,Hz$

B) $5\times {{10}^{14}}\,Hz$

C) $8\times {{10}^{15}}\,Hz$

D) $8\times {{10}^{10}}\,Hz$

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• question_answer65) Nitro group of nitrobenzene is:

A) $o-$directing

B) $m-$ direcdng

C) $p-$directing

D) o, and p directing

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• question_answer66) In which compound the number of 3? carbon is maximum:

A) 2, 5 dimethyl hexane

B) 2, 3, 4-trimethyl pentane

C) 2, 2, 4, 4-tetramethyl pentane

D) 2, 2, 3, trimethyl pentane

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• question_answer67) The pH of a solution of concentration few less than 1 N NaOH:

A) between 13 and 14

B) between 12 and 13

C) between 0 and 1

D) between 1 and 2

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• question_answer68) Dichlorocarbene is:

A) a neutral divalent species

B) a carbonation

C) a carbanion

D) a free radical

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• question_answer69) The geometry of the hybrid orbital, which contains 20% s-character is:

A) octahedral

B) tetrahedral

C) trigonal bipyramidal

D) square planar

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• question_answer70) Which test is not ideal to distinguish 2-butanol and 1-propanol?

A) Hydrogenation

B) lodoform test

C) Lucas test

D) Oxidation test

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• question_answer71) In the reaction of$C{{H}_{2}}=C{{H}_{2}}$and HBr initial addition occurs of:

A) indefinite

B) ${{H}^{+}}+B{{r}^{-}}$both at one time

C) ${{H}^{+}}$

D) $B{{r}^{-}}$

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• question_answer72) The hydrocarbon formed by electrolysis of sodium propionate:

A) $C{{H}_{3}}CH=C{{H}_{2}}$

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

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

D) $C{{H}_{3}}-C{{H}_{3}}$

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• question_answer73) 0.1M$C{{H}_{3}}COOH$is 1.3% ionised. The dissociation constant of it will be:

A) $1.69\times {{10}^{-5}}$

B) $1.69\times {{10}^{-6}}$

C) $1.69\times {{10}^{-4}}$

D) none of these

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• question_answer74) Which of the following give dye test?

A) Aniline

B) Methylamine

C) Diphenylamine

D) Ethylamine

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• question_answer75) When ethanamide is heated with NaOH and $B{{r}_{2}}$the compound formed is:

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

B) ${{C}_{2}}{{H}_{5}}NC$

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

D) $C{{H}_{3}}N{{H}_{2}}$

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• question_answer76) The chemical formula of potash alum is ${{K}_{2}}S{{O}_{4}}.A{{l}_{2}}{{(S{{O}_{4}})}_{3}}x{{H}_{2}}O,$here $x$ is:

A) 7

B) 12

C) 6

D) 24

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• question_answer77) Brass is an alloy of:

A) $Cu+Zn+Fe$

B) $Cu+Zn+Ni$

C) $Cu+Zn+Sn$

D) $Cu+Zn$

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• question_answer78) The electronic configuration of $F{{e}_{26}}$is [Ar]:

A) $~3{{d}^{8}}4{{s}^{2}}$

B) $~3{{d}^{7}}\text{ }4{{s}^{2}}$

C) $~3{{d}^{6}}4{{s}^{2}}$

D) $~3{{d}^{5}}4{{s}^{2}}$

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• question_answer79) The rate constant of forward reaction is $2.38\times {{10}^{-4}}$and the rate constant of backward reaction is $4.76\times {{10}^{-5}}.$ The equilibrium constant for the reaction will be:

A) 5

B) $5\times {{10}^{-2}}$

C) $2\times {{10}^{-4}}$

D) none of these

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• question_answer80) The element with electronic configuration $1{{s}^{2}}2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}},4{{s}^{2}}$shows same property as:

A) Mo

B) Rb

C) Ca

D) Sr

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• question_answer81) How much volume of 0.4 M NaOH is required to neutralise completely 200 mL $\text{0}\text{.5}\,\text{M}\,{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}$solution?

A) 600 mL

B) 300 mL

C) 500 mL

D) 200 Ml

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• question_answer82) The formula of acetaldehyde semicarbazone:

A) $C{{H}_{3}}-CH=NNHCONHC{{H}_{3}}$

B) $C{{H}_{3}}-CH=N-OH$

C) $C{{H}_{3}}CH=N-NHCON{{H}_{2}}$

D) $C{{H}_{3}}-CH=N-NHCONH-CON{{H}_{2}}$

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• question_answer83) One compound reacts with chloroform in presence of KOH and produces a bad smell (nause odour) compound. The compound formed is:

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

B) ${{C}_{6}}{{H}_{5}}CN$

C) $C{{H}_{3}}C{{H}_{2}}NC$

D) ${{C}_{2}}{{H}_{5}}CN$

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• question_answer84) Phenol, chloroform and caustic potash are heated. The compound formed is:

A) salicylic acid

B) $p-$ hydroxy benzaldehyde

C) $m-$ hydroxy benzaldehyde

D) salicylaldehyde

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• question_answer85) $A+NaOH\xrightarrow{{}}C{{H}_{3}}OH+HCOONa$is the reaction, compound A is:

A) HCN

B) HCHO

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

D) $C{{H}_{3}}Cl$

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• question_answer86) The compound obtained by the reaction of acetic anhydride and ammonia is:

A) $C{{H}_{3}}COON{{H}_{4}}$

B) $~C{{H}_{3}}CN$

C) $~C{{H}_{3}}CONHC{{H}_{3}}$

D) $~C{{H}_{3}}CON{{H}_{2}}$

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• question_answer87) Metal which does not react with aqueous solution of copper sulphate is:

A) Pb

B) Ag

C) Zn

D) Fe

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• question_answer88) When aniline react with acetic anhydride the product formed is:

A) $p-$aminobenzoic acid

B) $m-$aminobenzoic acid

C) acetanilide

D) $o-$aminobenzoic acid

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• question_answer89) $5SO_{2}^{-}+2MnO_{4}^{-}+6{{H}^{+}}\xrightarrow{{}}5SO_{4}^{2-}$$+\,2M{{n}^{2+}}+2{{H}_{2}}O$ the oxidation number of Mn changes from:

A) $+\,14\,\text{to}+4$

B) $+\,6\,\text{to}+2$

C) $-7\,\text{to}-2$

D) $+7\,\text{to}+2$

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• question_answer90) Which has highest ionisation potential?

A) N

B) O

C) ${{O}^{+}}$

D) Na

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• question_answer91) Formic acid and acetic acid may be distinguished by the reaction with:

A) sodium

B) 2, 4-dinitrophenyl hydrazine

C) litmus paper

D) Tollens reagent

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• question_answer92) Maximum melting point is of:

A) $~MgC{{l}_{2}}$

B) $~BaC{{l}_{2}}~$

C) $~CaC{{l}_{2}}$

D) $~BeC{{l}_{2}}$

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• question_answer93) The process requiring the absorption of energy is:

A) $F\xrightarrow{{}}{{F}^{-}}$

B) $Cl-C{{l}^{-}}$

C) $O\xrightarrow{{}}{{O}^{2-}}$

D) $H\xrightarrow{{}}{{H}^{-}}$

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• question_answer94) The number of coordinate bond in a molecule of ${{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\text{:}$

A) 4

B) 3

C) 2

D) 1

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• question_answer95) Camallite is:

A) $KCl$

B) $LiAl{{(Si{{O}_{3}})}_{2}}$

C) $MgC{{l}_{2}}.6{{H}_{2}}O$

D) $KCl.MgC{{l}_{2}}.6{{H}_{2}}O$

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• question_answer96) A piece of magnesium ribbon was heated to redness in an atmosphere of nitrogen and on cooling water was added. The gas evolved was:

A) ammonia

B) hydrogen

C) nitrogen

D) oxygen

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• question_answer97) Which of the following halides is least stable and doubtful existence?

A) $C{{l}_{4}}$

B) $Sn{{l}_{4}}$

C) $Ge{{l}_{4}}$

D) $Pb{{l}_{4}}$

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• question_answer98) Lithopone is a mixture of:

A) $ZnS$and ${{K}_{2}}S{{O}_{4}}$

B) $CaC{{l}_{2}}$and $C{{a}_{3}}{{F}_{2}}$

C) $Ca{{C}_{2}}$and $C{{a}_{3}}{{N}_{2}}$

D) $ZnS+BaS{{O}_{4}}$

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• question_answer99) Iodine is liberated from KI solution when treated with:

A) $ZnS{{O}_{4}}$

B) $CuS{{O}_{4}}$

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

D) $FeS{{O}_{4}}$

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• question_answer100) Chlorine acts as a bleaching agent only in the presence of:

A) dry air

B) sun light

C) moisture

D) pure oxygen

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• question_answer101) Photoperiodic response of red and far-red wavelength is mediated by:

A) phytochrome

B) cytochrome

C) ferredoxin

D) plastocyanin

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• question_answer102) Tissue that contains fat globules is known as:

A) duraepithelium

B) adipose tissue

C) nepiepithelium

D) none of these

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• question_answer103) Which of the following inactivates the enzyme by changing its shape?

A) Competitive inhibitor

B) Allosteric enzyme

C) Co-enzyme

D) All of the above

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• question_answer104) Freshly hatched larva of housefly is called :

A) caterpillar

B) maggot

C) nymph

D) grub

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• question_answer105) In human foetus, the heart begins to beat at developmental age of:

A) 4th week

B) 3rd week

C) 6th week

D) 8th week

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• question_answer106) Enzymes that catalyse endergonic synthesis, coupled with exergonic hydrolysis of ATP are:

A) ligases

B) isomerase

C) lyases

D) transferases

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• question_answer107) Gas exchange in the gills of a teleost fish is enhanced by having the blood flow in direction opposite to the direction of water flow, a process known as:

A) counter current exchange

B) ventilation

C) facilitated diffusion

D) active respiration

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• question_answer108) Parkinsons disease is associated with:

A) midbrain

B) thalamus

C) hypbthalamus

D) cerebrum

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• question_answer109) The branch of science dealing with the study of congenitally deformed foetus is called:

A) teratology

B) gerontology

C) nidology

D) none of the above

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• question_answer110) Sub-kingdom-Parazoa includes:

A) Protozoa

B) Porifera

C) Metazoa

D) None of these

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• question_answer111) Tears contain which enzyme that act as antiseptic:

A) muramidase

B) zymozyme

C) phagozyme

D) none of these

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• question_answer112) Organisms that are unable to tolerate wide variations of salt concentrations in the environment are termed:

A) stenohaline

B) euryhaline

C) enohaline

D) none of these

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• question_answer113) Non-essential amino acids, are synthesized in the human body during:

A) protein catabolism

B) protein anabolism

C) both [a] and [b]

D) none of the above

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• question_answer114) Sharpeys perforating fibres are related with:

A) contraction of muscles

B) relaxation of muscles

C) fixing of teeth

D) none of the above

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• question_answer115) Free martin is an example of:

A) hormonal controlled unlike sexed twins

B) sex reversal by gene

C) environmental control of sex

D) none of the above

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• question_answer116) Which of the following curve shows, how oxygen is loaded and unloaded due to partial pressure?

A) ${{\text{O}}_{\text{2}}}$curve

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

C) Bohrs curve

D) ${{\text{O}}_{\text{2}}}$ dissociation curve

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• question_answer117) The polio virus enters the human body through:

A) mosquito bite

B) tick bite

C) saliva and secretions from the nose

D) contaminated food and water

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• question_answer118) When there is no change in muscle length during contraction, it is called:

A) isometric

B) isotonic

C) isostasis

D) refractory period

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• question_answer119) Which of the following organ has papillary muscles?

A) Eyes

B) Brain

C) Heart

D) Mammary glands

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• question_answer120) The external and internal parts of cerebrospinal fluid are connected through The roof of:

A) epithalamus

B) filum terminate

C) cerebral ventricles

D) medula oblongata

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• question_answer121) Vasopressin influences:

A) electrolyte efflux

B) nerve excitability

C) water reabsorption

D) all of the above

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• question_answer122) Widal test is performed for:

A) malarial fever

B) cholera

C) typhoid fever

D) dengue fever

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• question_answer123) Pheromones when secreted upon the skin surface, its odour generally affects:

A) skin colour

B) genitalia

C) breast

D) mutual behaviour of members of a species

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• question_answer124) Which response Amoeba shows towards current of water?

A) Galvanotaxis

B) Rheotaxis

C) Geotaxis

D) Thigmotaxis

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• question_answer125) When more than one species of Plasmodium infect a person, it is called:

A) quartan malaria

B) tertian malaria

C) aestivo- autumnal malaria

D) quotidian malaria

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• question_answer126) In which species of Paramecium, autogamy is found?

A) Paramecium caudatum

B) Paramecium Aurelia

C) Paramecium furs aria

D) All of the above

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• question_answer127) Coats disease is related with:

A) eye

B) liver

C) brain

D) pancreas

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• question_answer128) The study of the energy transfer and relationships between all living organisms is known as:

A) thermodynamics

B) bioenergetics

C) kinetic energy

D) potential energy

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• question_answer129) The infective stage ofFasciola hepatica to sheep is

A) sporocyst

B) cercaria

C) metacercaria

D) hexacanth

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• question_answer130) Which of the following algae shows physiological anisogamy?

A) Spirogyra

B) Ulothrix

C) Volvox

D) All of these

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• question_answer131) Rate of mutation is affected by:

A) temperature

B) X-rays

C) gamma and beta radiations

D) all of the above

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• question_answer132) A parenchymatous cell which stores ergostic materials or waste substance is:

A) idioblast

B) phragmoblast

C) blastomere

D) none of these

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• question_answer133) Which of the following is applied for the biological control of cotton scale insect pest?

A) Rhodalia cardinalis

B) Aleurolobus burodensis

C) Pectinophora gossypila

D) Both [a] and [b]

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• question_answer134) Which of the following is not a characteristics of the anatomy of dicotyledonous roots?

A) Presence of little pith or absent

B) Radial vascular bundles

C) Presence of 15-20 vascular bundles

D) Secondary growth

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• question_answer135) The number of male prothallial cells in Selaginella plant is:

A) one

B) two

C) twelve

D) numerous

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• question_answer136) Yeast is different from Penicillium and Rhizopus in being:

A) acellular

B) unicellular

C) having unseptate hyphae

D) multicellular

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• question_answer137) In the ${{\text{F}}_{\text{2}}}$generation, genotypic and phenotypic ratios are identical in case of:

A) complementary genes

B) Mendelian dihybrids

C) Mendelian monohybrids

D) incomplete dominance

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• question_answer138) In Funaria, the number of peristomial teeth is:

A) 8

B) 16

C) 32

D) 64

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• question_answer139) The niche of a population is the:

A) set of conditions that interacts

B) place where it lives

C) set of conditions and resources it uses

D) geographical area that it covers

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• question_answer140) Periblem is gives rise to:

A) epidermis

B) cortex

C) pericycle

D) pith

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• question_answer141) A test-cross distinguishes between:

A) a homozygous dominant and the heterozygous form

B) a homozygous recessive and the heterozygous form

C) two homozygous form

D) two heterozygous form

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• question_answer142) According to modern colloidal theory, the protoplasm is a polyphasic colloidal system. This was first suggested by:

A) Purkinje

B) Max Schultz

C) R.A. Fisher

D) E. Strasburger

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• question_answer143) The scientific name of oyster mushroom, an edible fungus is:

A) Tolyposporium penicillarie

B) Colletotrichum falcatum

C) Pleurotus osteratus

D) Citromyces purpurogenum

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• question_answer144) Verticillaster inflorescence is the characteristic of family:

A) Cucurbitaceae

B) Rubiaceae

C) Labiatae

D) Asteraceae

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• question_answer145) In cyathium inflorescence, the ratio between male: female flower is:

A) one : one

B) one : many

C) many : one

D) many : many

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• question_answer146) If a cell A with DPD 4 bars is connected to cell B, C, D whose Osmotic Pressure (OP) and Turgor Pressure (TP) are respectively 4 and 4, 10 and 5, 7 and 3 bars, the flow of water will be:

A) B to A, C and D

B) A and D to B and C

C) C to A, B and D

D) A to B, C and D

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• question_answer147) Which one of the following is not a synthetic auxin?

A) 2, 4-D

B) IBA

C) IPA

D) IAA

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• question_answer148) The usual shape of growth curve is:

A) sigmoid

B) zig-zag

C) linear

D) inverted bell-shaped

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• question_answer149) The beginning of plant cultivation is considered to be taken place in:

A) Neolithic age

B) Paleolithic age

C) Mesolithic age

D) None of these

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• question_answer150) Which of the following groups is not comprised of sac-fungi?

A) Yeasts

B) Truffles

C) Mushrooms

D) Morels

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