# Solved papers for JCECE Medical JCECE Medical Solved Paper-2003

### done JCECE Medical Solved Paper-2003

• question_answer1) The internal resistance of a cell is the resistance of:

A) electrolyte used in cell

B) electrodes of the cell

C) material used in cell

D) vessel of the cell

• question_answer2) A device for generating an alternating current of a desired frequency is known as:

A) an oscillator

B) an amplifier

C) a rectifier

D) none of these

• question_answer3) The angle of minimum deviation for a thin prism with respect to air and when dipped in water will be:$\left( {{\,}_{a}}{{\mu }_{g}}=\frac{3}{2}{{,}_{a}}{{\mu }_{w}}=\frac{4}{3} \right)$

A) $\frac{1}{4}$

B) $\frac{1}{8}$

C) $\frac{1}{3}$

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

• question_answer4) Escape velocity of a body when projected from the earths surface is 11.2 km/s. If it is projected at an angle of $\text{5}{{\text{0}}^{\text{o}}}$ from the horizontal, the escape velocity is:

A) 11.8 km/s

B) 16.5 km/s

C) 11.2 km/s

D) 14.5 km/s.

• question_answer5) A diamagnetic substance is brought near a strong magnet, then it is:

A) attracted by a magnet

B) repelled by a magnet

C) repelled by north pole and attracted by south pole

D) attracted by north pole and repelled by south pole

• question_answer6) The ratio of intensities of two waves is 9:16. If they interfere, the ratio of maximum to minimum intensity will be:

A) 4 : 1

B) 1 : 25

C) 1 : 3

D) 49 : 1

• question_answer7) The sun emits a light with maximum wavelength 510 nm while another star emits a light with maximum wavelength of 350 nm. The ratio of surface temperature of sun and the star will be:

A) 0.69

B) 0.46

C) 1.45

D) 2.1

• question_answer8) If the equation of motion of standing wave is $y=0.3\,\sin (314\,t-1.57x),$then the velocity of standing wave is:

A) 400 unit

B) 350 unit

C) 209 unit

D) 200 unit

• question_answer9) For driving current of 2 A for 6 min in a circuit, 1000 J of work is to be done. The emf of the source in the circuit is:

A) 2.03 V

B) 2.54 V

C) 1:25 V

D) 1.39 V

• question_answer10) The moment of momentum for an electron in second orbit of hydrogen atom as per Bohrs model is:

A) $\frac{h}{\pi }$

B) $2\pi h$

C) $\frac{2h}{\pi }$

D) $\frac{\pi }{h}$

• question_answer11) The latent heat of vaporisation of water is $\text{2250}\,\text{J/kg}\text{.}$If the work done in the process of vaporisation of 1 kg is 168 J, then increase in internal energy will be:

A) 1904 J

B) 1984 J

C) 3202 J

D) 2082 J

• question_answer12) Huygens wave theory ,of light could not explain:

A) photoelectric effect

B) interference

C) diffraction

D) polarization

• question_answer13) In a triode valve, when the plate potential is increased from 200 V to 220 V and grid potential is decreased from $-0.5\text{ V}$to $-\text{ 1}\text{.3 V,}$ there is 1 no change in plate current. The amplification factor of the triode is:

A) 25

B) 14

C) 11

D) 73

• question_answer14) A bar magnet of magnetic moment $\text{220 A}{{\text{m}}^{\text{2}}}$is suspended in a magnetic field of intensity 0.25 N/Am. The couple required to deflect it through $\text{3}{{\text{0}}^{\text{o}}}$is:

A) 27.5 Nm

B) 20.25 Nm

C) 47.63 Nm

D) 12 Nm

• question_answer15) A plano-convex lens has refractive index 1.5 and radius of curvature 50 cm. What is focal length of lens?

A) 100 cm

B) 200 cm

C) 178 cm

D) 150 cm

• question_answer16) A source and an observer move away from each other, with a velocity of 20 m/s. If the apparent frequency heard by the observer is 1840 Hz, the actual frequency of the source is: (Velocity of sound in air = 340 m/s):

A) 2486 Hz

B) 2070 Hz

C) 2134 Hz

D) 1872 Hz

• question_answer17) The speed of wave in a medium is 650 m/s. If 3500 waves are passing through a point in the medium in 1.67 min, then its wavelength will be:

A) 16.25m

B) 14.29m

C) 18.57m

D) 20.50m

• question_answer18) The body is projected at such angle that the horizontal range is three times the greatest height. The angle of projection is:

A) ${{43}^{o}}8$

B) ${{25}^{o}}8$

C) ${{33}^{o}}7$

D) ${{53}^{o}}1$

• question_answer19) On the horizontal surface of a truck, a block of mass 1 kg is placed $(\mu =0.6)$ and truck is moving with acceleration $\text{5}\,\text{m/}{{\text{s}}^{\text{2}}}\text{.}$ The frictional force acting on the block will be:$(g=10\,m/{{s}^{2}})$

A) 6 N

B) 5.88 N

C) 7 N

D) 9 N

• question_answer20) Calculate the work done when a force $\vec{F}=2\hat{i}+3\hat{j}-5\hat{k}$units acts on a body producing a displacement$\vec{s}=2\hat{i}+4\hat{j}+3\hat{k}$ units:

A) 1 unit

B) 20 unit

C) 5 unit

D) zero

• question_answer21) The efficiency of Car not engine is 50% and temperature of sink is 500 K. If the temperature of source is kept constant and its efficiency is to be raised to 60%, then the required temperature of the sink will be:

A) 600 K

B) 400 K

C) 500 K

D) 100 K

• question_answer22) What happens to the internal energy of a gas during isothermal expansion?

A) Internal energy will decrease

B) Internal energy: will increase

C) Internal energy will become zero

D) Internal energy will remain same

• question_answer23) 100 g ice is mixed with 100 g of water at $100{{\,}^{o}}C.$ What will be the final temperature of the mixture?

A) $~10{{\,}^{o}}C$

B) $~27{{\,}^{o}}C$

C) $~14{{\,}^{o}}C$

D) none of these

• question_answer24) Black hole consists of:

A) ozone layer

B) super dense planetary material

C) upper surface of atmosphere

D) none of the above

• question_answer25) Three resistors $2\Omega ,\,3\Omega$ and $4\Omega$ are connected as shown in the given diagram. The equivalent resistance will be:

A) $\frac{12}{13}$

B) $\frac{11}{10}$

C) 2

D) $\frac{10}{11}$

• question_answer26) If an electron jumps from first orbit to third orbit of hydrogen atom it will:

A) not loose energy

B) release energy

C) absorb energy

D) not gain energy

• question_answer27) A body of mass 10 kg moving with velocity 10 m/s collides with a stationary body of mass 5 kg. After collision both bodies stick to each other, velocity of the joint body after collision is:

A) $\frac{3}{10}\,m/s$

B) $20\,m/s$

C) $\frac{20}{3}\,m/s$

D) $15\,m/s$

• question_answer28) If a body starts from rest and travels 110 cm in the 9th second, then acceleration of the body is:

A) $0.13\text{ }m/{{s}^{2}}$

B) $~0.16\text{ }m/{{s}^{2}}$

C) $~0.18\text{ m/}{{\text{s}}^{2}}$

D) $~0.34\text{ }m/{{s}^{2}}$

• question_answer29) If the momentum of a particle is doubled, then its de-Broglie wavelength will:

A) become four times

B) become half

C) become two times

D) remain unchanged

• question_answer30) Dimensions of torque are:

A) $[{{M}^{2}}{{L}^{2}}{{T}^{-2}}]$

B) $[M{{L}^{2}}{{T}^{-2}}]$

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

D) $[M{{L}^{0}}{{T}^{-2}}]$

• question_answer31) Two vectors have magnitudes 3 and 5. If angle between them is $\text{6}{{\text{0}}^{\text{o}}}\text{,}$ then the dot product of two vectors will be:

A) 7.5

B) 6.5

C) 8.4

D) 7.9

• question_answer32) The kinetic energy of 1 g molecule of a gas, at normal temperature and pressure is:$\text{(R}\,\text{=}\,\text{8}\text{.321}\,\text{J/mol-K)}$

A) $1.2\times {{10}^{2}}J$

B) $3.4\times {{10}^{3}}J$

C) $1.66\times {{10}^{4}}J$

D) $2.97\times {{10}^{4}}J$

• question_answer33) If the coefficient of cubical expansion is $x$times of the coefficient of superficial expansion, then value of $x$ is:

A) 2.7

B) 2

C) 1.5

D) 9.5

• question_answer34) X-ray will not show the phenomenon of:

A) interference

B) deflection by electric field

C) diffraction

D) polarization

• question_answer35) Bernoullis theorem is based on:

A) conservation of mass, energy and momentum

B) conservation of mass

C) conservation of momentum

D) conservation of energy

• question_answer36) In bringing an electron towards another electron, the electrostatic potential energy of the system:

A) decreases

B) increases

C) remains same

D) becomes zero

• question_answer37) The half-life of radium is 1600 yr. What is the mean life and disintegration constant of radium?

A) $2309\,yr,\,\frac{1}{2309}/yr\,$

B) $3309\,yr,\,\frac{1}{3309}/yr\,$

C) $1309\,yr,\,\frac{1}{1309}/yr\,$

D) none of the above

• question_answer38) Energy obtained when 1 mg mass is completely converted in to energy will be:

A) $9\times {{10}^{13}}\,J$

B) $3\times {{10}^{8}}\,J$

C) $3\times {{10}^{15}}\,J$

D) $9\times {{10}^{15}}\,J$

• question_answer39) A ray of light is incident on a surface of a plate of glass of refractive index 1.5 at polarising angle. The angle of refraction of the ray will be:

A) ${{53.7}^{o}}$

B) $~{{43.7}^{o}}$

C) ${{33.7}^{o}}$

D) none of these

• question_answer40) A closed organ pipe and an open organ pipe are tuned to the same fundamental frequency. The ratio of their lengths is:

A) 1 : 2

B) 4 : 1

C) 1 : 4

D) 2 : 1

• question_answer41) A particle is moving along a circular path of radius 5m with uniform speed 5 m/s. What will be the average acceleration -when the particle completes half revolution?

A) $\frac{10}{\pi }m/{{s}^{2}}$

B) $10\,m/{{s}^{2}}$

C) $10\pi \,m/{{s}^{2}}$

D) zero

• question_answer42) A body of mass m is attached between two springs of force constants ${{k}_{1}}$and ${{k}_{2}}$as shown in figure. The other ends of the springs are fixed to firm supports. The frequency of the oscillation is:

A) $n=\frac{1}{2\pi }\sqrt{\frac{{{k}_{1}}-{{k}_{2}}}{m}}$

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

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

D) none of the above

• question_answer43) In a p-type semiconductor, germanium is doped with:

A) boron

B) gallium

C) aluminium

D) all of these

• question_answer44) In a full wave rectifier circuit operating from 50 Hz mains frequency, what is the fundamental frequency in the ripple?

A) $50\,Hz$

B) $100\,Hz$

C) $25\,Hz$

D) $70\,Hz$

• question_answer45) An ideal gas at $27{{\,}^{o}}C$is compressed adiabatically to $\frac{8}{27}$ of its original volume. The rise in temperature will be $\left( \gamma =\frac{5}{3} \right):$

A) $~480{{\,}^{o}}C$

B) $~275{{\,}^{o}}C$

C) $~450{{\,}^{o}}C$

D) $~375{{\,}^{o}}C$

• question_answer46) When you make ice cubes, entropy of water:

A) does not change

B) increases

C) decreases

D) may either increase or decrease depending on the process used

• question_answer47) The focal length of the objective lens and eye-piece of an astronomical telescope are 2m and 0.05 m. Find the length of the telescope.

A) 2.05 m

B) 1.16 m

C) 1.05 m

D) 2.9 m

• question_answer48) Two identical batteries, each of emf 2 V and internal resistance $1\,\Omega$pass a current through external resistance $R=0.5\,\Omega .$The maximum power that can be developed across R using these batteries is:

A) 3.2W

B) 8.2W

C) 4 W

D) 2 W

• question_answer49) At what height from the earths surface, the acceleration due to gravity will be half the value of g at surface? (R= 6400 km)

A) 6400 km

B) 8200 km

C) 4800 km

D) 1600 km

• question_answer50) In a semiconducting material the mobilities of electrons and holes are ${{\mu }_{e}}$and ${{\mu }_{h}}$ respectively which of the following is true?

A) ${{\mu }_{e}}>{{\mu }_{h}}$

B) ${{\mu }_{e}}<{{\mu }_{h}}$

C) ${{\mu }_{e}}={{\mu }_{h}}$

D) ${{\mu }_{e}}<0,\,{{\mu }_{h}}>0$

• question_answer51) Tyndall effect is shown by:

A) solution

B) precipitate

C) sol

D) none of these

• question_answer52) In reaction, $MnO_{4}^{-}+{{H}^{+}}+{{C}_{2}}O_{4}^{2-}\xrightarrow{{}}M{{n}^{2+}}$ $+\,{{H}_{2}}O+C{{O}_{2}}$ What is happening?

A) Reduction of Mn

B) Reduction of ${{\text{C}}_{\text{2}}}\text{O}_{4}^{2-}$

C) Oxidation of Mn

D) None of these

• question_answer53) In which of the following ionic bond is present?

A) $B{{F}_{3}}$

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

C) $HCl$

D) $BC{{l}_{2}}$

• question_answer54) Deficiency of vitamin E causes:

A) scurvy

B) beri-beri

C) sterility

D) xerophthalmia

• question_answer55) The reaction of Lucas reagent is fast with:

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

B) ${{(C{{H}_{3}})}_{3}}COH$

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

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

• question_answer56) IUPAC name of the compound is: $H-\overset{\text{O}}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{2}}-C{{H}_{2}}-COOH$

A) 3-oxo-butanoic acid

B) 4-oxo-propanoic acid

C) 3-formyl-propanoic acid

D) none of the above

• question_answer57) Tollens reagent is:

A) alkaline $\text{CuS}{{\text{O}}_{\text{4}}}$solution

B) ammoniacal cuproxide solution

C) aqueous solution of sodium cupritartarate

D) ammoniacal $\text{AgN}{{\text{O}}_{\text{3}}}$solution

• question_answer58) Epsom salt is:

A) $MgS{{O}_{4}}.2{{H}_{2}}O$

B) $BaS{{O}_{4}}.2{{H}_{2}}O$

C) $MgS{{O}_{4}}.7{{H}_{2}}O$

D) $CaS{{O}_{4}}.2{{H}_{2}}O$

• question_answer59) Which of the following carbonate decompose most easily on heating?

A) $R{{b}_{2}}C{{O}_{3}}$

B) ${{K}_{2}}C{{O}_{3}}$

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

D) $MgC{{O}_{3}}$

• question_answer60) In an isothermal expansion of an ideal gas:

A) $W=0$

B) $\Delta E=0$

C) $q=0$

D) $\Delta V=0$

• question_answer61) The degree of hydrolysis of $\text{0}\text{.01 M N}{{\text{H}}_{\text{4}}}\text{C1}$is:$({{K}_{h}}=2.5\times {{10}^{-9}})$

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

B) $5\times {{10}^{-4}}$

C) $5\times {{10}^{-3}}$

D) $5\times {{10}^{-7}}$

• question_answer62) The number of gram equivalent of ${{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}$in 1000 mL 3M solution, is:

A) 3

B) 6

C) 4

D) 1.5

• question_answer63) The radioactive isotope used in cancer therapy, is

A) ${{1}^{128}}$

B) $C{{o}^{60}}$

C) $C{{o}^{59}}$

D) ${{P}^{32}}$

• question_answer64) The expression of angular momentum of an electron in a Bohrs orbit is:

A) $\frac{n}{3}\frac{h}{\pi }$

B) $\frac{n}{2}\frac{h}{\pi }$

C) $\frac{h}{4\pi }$

D) $\sqrt{l(l+1)}.\frac{h}{2\pi }$

• question_answer65) Which of the following is called Hofmanns bromamide reaction?

A) $C{{H}_{3}}CN+2{{H}_{2}}O\xrightarrow{{}}C{{H}_{3}}COO+N{{H}_{3}}$

B) $C{{H}_{3}}CN+4H\xrightarrow{Na/EtOH}C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}$

C) $C{{H}_{3}}CON{{H}_{2}}\xrightarrow{B{{r}_{2}}/NaOH}C{{H}_{3}}N{{H}_{2}}$

D) $C{{H}_{2}}COCl+C{{H}_{3}}OH\xrightarrow{{}}$$C{{H}_{3}}COOC{{H}_{3}}+HCl$

• question_answer66) Which one among the following contains a phenolic-OH group?

A) Oxalic acid

B) Formic acid

C) Picric acid

D) Citric acid

• question_answer67) In the reaction, product X is: $C{{H}_{3}}-C\equiv CH+{{H}_{2}}O\xrightarrow{{{H}^{+}}/H{{g}^{2+}}}X$

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

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

C) $C{{H}_{3}}-C(OH)=CHOH$

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

• question_answer68) Which is an amphoteric oxide?

A) $MgO$

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

C) $A{{l}_{2}}{{O}_{3}}$

D) $CuO$

• question_answer69) The oxidation number of S in ${{\text{H}}_{\text{2}}}{{\text{S}}_{\text{2}}}{{\text{O}}_{\text{8}}}$is:

A) $+\,6$

B) $-\,6$

C) $+\,\,4$

D) $+\,\,8$

• question_answer70) Bleaching powder is obtained by treating chlorine with:

A) $CaC{{O}_{3}}$

B) $Ca{{(OH)}_{2}}$

C) $CaO$

D) none of these

• question_answer71) For reaction, $PC{{l}_{3}}(g)+C{{l}_{2}}(g)PC{{l}_{5}}(g)$ the value of ${{K}_{c}}$at $\text{250}{{\,}^{\text{o}}}\text{C}$is 26. At the same temperature, the value of ${{K}_{p}}$is:

A) 0.46

B) 0.61

C) 0.95

D) 0.73

• question_answer72) The volume of a gas is reduced to 1.0 L at $\text{25}{{\,}^{\text{o}}}\text{C}$and 1 atm. pressure. Its pressure at $\text{35}{{\,}^{\text{o}}}\text{C}$would be:

A) 0.96 atm

B) 1.03 atm

C) 2.04 atm

D) 3.08 atm

• question_answer73) The strongest acid among the following is:

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

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

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

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

• question_answer74) The compressibility factor for an ideal gas is:

A) $<1$

B) $=1$

C) $>1$

D) always 2

• question_answer75) The standard reduction potential of $\text{L}{{\text{i}}^{\text{+}}}\text{,}\,\text{B}{{\text{a}}^{\text{2+}}}\text{,}\,\text{N}{{\text{a}}^{\text{+}}}$and $\text{M}{{\text{g}}^{2+}}$are $-3.05,-2.73,$$-2.71$and $-2.37$ volts respectively. Which one is the strongest reducing agent?

A) Li

B) Na

C) Mg

D) Ba

• question_answer76) The unit of rate constant for 1st order reaction is:

A) $mol\,{{L}^{-1}}{{s}^{-1}}$

B) $mo{{l}^{-1}}\,L{{s}^{-1}}$

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

D) $mo{{l}^{2}}{{L}^{-2}}{{s}^{-1}}$

• question_answer77) In which of the following, the dipole moment is zero?

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

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

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

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

• question_answer78) The bond order of $\text{O}_{\text{2}}^{\text{+}}$ is:

A) 2

B) 2.5

C) 1.5

D) 0.5

• question_answer79) Addition of $\text{H}\text{gC}{{\text{l}}_{\text{2}}}$to $\text{SnC}{{\text{l}}_{\text{2}}}$gives a black colour due to:

A) oxidation of Sn

B) reduction of $\text{HgC}{{\text{l}}_{\text{2}}}$

C) formation of amalgum

D) oxidation of Hg

• question_answer80) Which one of the following is a trihydric alcohol containing only secondary hydroxyl group?

A) $C{{H}_{3}}-\underset{OH}{\overset{C{{H}_{3}}}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}OH$

B) $\underset{OH}{\mathop{\underset{|}{\mathop{C{{H}_{2}}}}\,}}\,-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-\underset{OH}{\mathop{\underset{|}{\mathop{C{{H}_{2}}}}\,}}\,$

C) $C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}$

D) None of the above

• question_answer81) How many sigma and n-bonds are there in the following compound? $C{{H}_{2}}=CH-C\equiv C-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}$

A) $11\sigma ,4\pi$

B) $12\sigma ,3\pi$

C) $14\sigma ,4\pi$

D) $15\sigma ,4\pi$

• question_answer82) In the nitration of benzene, the reactive species is:

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

B) $NO_{2}^{+}$

C) $NO_{2}^{-}$

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

• question_answer83) Reaction of phenol with $\text{CC}{{\text{l}}_{\text{4}}}$and$\text{NaOH,}$ followed by hydrolysis is likely to give:

A)

B)

C)

D)

• question_answer84) In the reaction,${{\,}_{\text{92}}}{{\text{U}}^{\text{238}}}\xrightarrow{{}}{{\,}_{\text{82}}}\text{P}{{\text{b}}^{\text{206}}}\text{,}$ the number of$\alpha$and $\beta -$particles emitted are:

A) $7\alpha ,5\beta$

B) $6\alpha ,4\beta$

C) $4\alpha ,3\beta$

D) $8\alpha ,6\beta$

• question_answer85) Which is the correct Gibbs Helmholtz equation?

A) $\Delta H=\Delta G-T.\Delta S$

B) $\Delta S=\frac{1}{T}[\Delta G-\Delta H]$

C) $\Delta S=\frac{1}{T}[\Delta H-\Delta G]$

D) $-\Delta G=\Delta H-T.\Delta S$

• question_answer86) Vinegar is:

A) 8-10% acetic acid,

B) 6-10% ethyl alcohol

C) glacial acetic acid

D) 10% formic acid

• question_answer87) Decreasing order of - electron affinity of halogens is:

A) $Cl>Br>F>I$

B) $Cl>F>Br>I$

C) $Br>Cl>F>I$

D) $F>Cl>Br>I$

• question_answer88) Which of the following is an acidic salt?

A) $N{{a}_{2}}S{{O}_{4}}$

B) $Pb(OH)Cl$

C) $BaC{{l}_{2}}$

D) $N{{a}_{2}}HP{{O}_{4}}$

• question_answer89) Which one is the Lewis acid?

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

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

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

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

• question_answer90) 720 g water contain the number of moles:

A) 2

B) 190

C) 40

D) 55

• question_answer91) $2HCHO\xrightarrow{50%\,NaOH}C{{H}_{3}}OH+HCOONa$ This reaction is called:

A) aldol condensation

B) Tischenko reaction

C) Cannizaro reaction

D) Reimer Tiemann reaction

• question_answer92) The geometry of the molecule having s and $p-$characters equal to 25% and 75% respectively, is:

A) trigonal

B) linear

C) tetrahedral

D) octahedral

• question_answer93) Impossible configuration is:

A) $1{{s}^{2}},2{{s}^{2}}2{{p}^{2}},3{{s}^{2}}$

B) $1{{s}^{2}},2{{s}^{2}}$

C) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}}$

D) none of these

• question_answer94) The solubility product of $\text{PbB}{{\text{r}}_{\text{2}}}$is $\text{10}\text{.8}\times {{10}^{-5}}.$ It is 70% dissociated in saturated solution. The solubility of salt is:

A) $4.18\times {{10}^{-2}}$

B) $6.76\times {{10}^{-3}}$

C) $3.4\times {{10}^{-4}}$

D) $5.44\times {{10}^{-2}}$

• question_answer95) The latent heat of vaporisation of water is $540\,\text{cal}\,{{\text{g}}^{-1}}$at $\text{100}{{\,}^{\text{o}}}\text{C}\text{.}$ What will be the entropy increase when one mole of water is evaporated at $\text{100}{{\,}^{\text{o}}}\text{C?}$

A) $28\,cal\,{{K}^{-1}}\,mo{{l}^{-1}}$

B) $26\,cal\,{{K}^{-1}}\,mo{{l}^{-1}}$

C) $540\,cal\,{{K}^{-1}}mo{{l}^{-1}}$

D) $1.82\,cal\,{{K}^{-1}}mo{{l}^{-1}}$

• question_answer96) The brown ring in the test of nitrate is formed due to:

A) ${{[Fe{{({{H}_{2}}O)}_{5}}N{{O}_{2}}]}^{2+}}$

B) $Fe{{(N{{O}_{3}})}_{3}}$

C) ${{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{2+}}$

D) ${{[Fe({{H}_{2}}O){{(NO)}_{5}}]}^{2+}}$

• question_answer97) The corrosive sublimate is:

A) Hg

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

C) $H{{g}_{2}}C{{l}_{2}}$

D) $HgC{{l}_{2}}$

• question_answer98) The half-life of radium is 1580 yr. Its average life is:

A) $2.275\times {{10}^{3}}yr$

B) $3.735\times {{10}^{2}}yr$

C) $1.62\times {{10}^{3}}yr$

D) $7.28\times {{10}^{2}}yr$

• question_answer99) Cobalt is present in:

A) vitamin${{B}_{12}}$

B) vitamin${{B}_{6}}$

C) vitamin ${{B}_{2}}$

D) vitamin${{B}_{1}}$

• question_answer100) Adipic acid and hexamethylene diamine, on polymerisation gives:

A) nylon-6

B) Dacron

C) nylon-66

D) Bakelite

• question_answer101) Reserpine is obtained from:

A) Asafoetida

B) Rauwolfia serpentine

C) Curcuma longa

D) Papaver somniferum

• question_answer102) Seed coat is derived from:

A) pericarp

B) epicarp

C) integuments of ovule

D) nucellus

• question_answer103) A characteristic feature of ovary of Brassica compesrris is:

A) presence of replum

B) axile placentation

C) epigynous

D) multilocular nature

• question_answer104) One of the characteristic of Hydra is:

A) predation

B) metamerism

C) hibernation

D) mimicry

• question_answer105) Which of the following pair lack the unit membrane?

A) Nucleus and ER

B) Mitochondria and chloroplast

C) Ribosomes and nucleolus

D) Golgi body and lysosome

• question_answer106) The number of DNA in chromosome at ${{\text{G}}_{2}}$ stage:

A) one

B) two

C) four

D) eight

• question_answer107) Which of the following is a disaccharide?

A) Glucose

B) Fructose

C) Sucrose

D) Galactose

• question_answer108) Hydrolysis of lipid yields:

A) fatty acids and maltose

B) fatty acids and glycerol

C) mannose and glycerol

D) maltose and fatty acid

• question_answer109) Ctenophora shows affinities with:

A) Cnidaria

B) Aschelminthes

C) Cephalopoda

D) Turbelaria

• question_answer110) Exception of MendeFs law is:

A) independent assortment

C) purity of gametes

D) none of the above

• question_answer111) The position of protoxylem in leaf is:

B) abaxial

C) surrounded by metaxylem

D) lateral

• question_answer112) In Pheretima, locomotion occurs with the help of:

A) circular muscles

B) longitudinal muscles and setae

C) circular, longitudinal muscles and setae

D) parapodia

• question_answer113) In Amoeba which controls the cytoplasmic osmality?

A) nucleus

B) ectoplasm

C) biurets

D) contractile vacuole

• question_answer114) Branched, aseptate, coenocytic mycelium present in:

A) Aspergillus

B) Albugo

C) Penicillium

D) Erysiphe

• question_answer115) The economically important plant of Malvaceae:

A) Gossypium hirsutum

B) Hibiscus cannabis

C) Abelmoschus esculentus

D) All of the above

• question_answer116) The cells without nuclei are present in:

A) vascular cambium

B) root hair

C) companion cell

D) members of sieve tube

• question_answer117) Which of the following is not correctly matched?

A) Rhinencephalon- Olfactory

B) Hypothalamus- Pituitary

C) Cerebellum- Balance

D) Medulla oblongata - Temperature regulation

• question_answer118) The scientist who was awarded Nobel Prize in 1959 for in vitro synthesis of polyribonucleotide?

A) Mendel

B) Calvin

C) Khorana

D) Ochoa

• question_answer119) Which of the following have sunken stomata?

A) Nerium

B) Mangifera

C) Hydrilla

D) Zeamays

• question_answer120) When a plasmolysed cell is placed in a hypotonic solution then water will move inside the cell. Which force causes this?

A) DPD

B) O.P

C) WP

D) None of these

• question_answer121) Group of two or more than two plants species is called as:

A) plant community

B) animal ecosystem

C) plant ecosystem

D) ecological niche

• question_answer122) Which type of kidneys are found in amphibians?

A) Holonephric

B) Mesonephric

C) Pronephric

D) Metanephric

• question_answer123) Which part of cell have enzymes for glycolysis?

A) Cytoplasm

B) Mitochondria

C) Golgi complex

D) Nucleus

• question_answer124) Botanical name of species which cause white rust of crucifers?

A) Peronospora parasitica

B) Puccinia graminis

C) Pythium debaryanum

D) Albugo Candida

• question_answer125) Which of the following nerve supplies organ of Cord?

A) Auditory

B) Olfactory

C) Trochlear

D) Vagus

• question_answer126) A pond is a:

A) biome

B) natural ecosystem

C) artificial ecosystem

D) community of plants and animals

• question_answer127) Which one of the following body functions is not performed by kidneys?

A) Excretion

B) Osmoregulation

C) Regulation of blood volume

D) Destruction of dead blood corpuscles

• question_answer128) The study of fossils is called:

A) Palynology

B) Palaeontology

C) Fossil systematic

D) Pharmacognosy

• question_answer129) The characteristic of blue-green algae is:

A) DNA without histone

B) nuclear membrane absent

C) 70S ribosome

D) all of the above

• question_answer130) Classification of sponges is primarily based on the:

A) body organisation

B) body plan

C) skeleton

D) canal system

• question_answer131) In mammals corpus luteum is found in which organ?

A) Brain

B) Ovary

C) Liver

D) Eyes

• question_answer132) Which character is found only in mammals?

A) Neck

B) Diaphragm

C) Optic lobes of brain

D) Tail

• question_answer133) Which of the following is not correct for gastrulation?

A) Archenteron is formed

B) All germinal layers are formed

C) Morphogenetic movements

D) Some blastomeres and blastocoel degenerate

• question_answer134) The chemical formula of starch is:

A) ${{({{C}_{6}}{{H}_{10}}{{O}_{5}})}_{n}}$

B) ${{({{C}_{6}}{{H}_{12}}{{O}_{6}})}_{n}}$

C) ${{C}_{12}}{{H}_{22}}{{O}_{11}}$

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

• question_answer135) Which of the following is used during discovery of Calvin cycle?

A) Spirogyra

B) Volvox

C) Chlamydomonas

D) Chlorella

• question_answer136) Respiratory quotient of which diet is less than unity?

A) Carbohydrate

B) Fats

C) Organic acids

D) Sugar

• question_answer137) Velamen and spongy tissue is found in:

A) breathing roots

B) parasitic

C) tuberous roots

D) epiphytic roots

• question_answer138) The function of clitellum in Pheretima is:

A) formation of cocoon

B) secretion of hormone

C) nutrition of sperm

D) respiration

• question_answer139) Which of the following is not a function of water in cell?

A) It provides energy for chemical reaction

B) It act as a solvent

C) It provides a medium for chemical reaction

D) It release hydrogen ions on ionization

• question_answer140) In which of the following reptiles four chambered heart is present?

A) Lizard

B) Snake

C) Scorpion

D) Crocodile

• question_answer141) Rate of transpiration is measured by:

A) nanometer

B) auxanometer

C) pofometer

D) barometer

• question_answer142) Pigments present in chloroplast of Ulothrix:

A) chlorophyll-a, chl. b, fucoxanthin $\beta -$carotene

B) chl. a, chl. b, chl. c, c-phycocyanin, c-phycoerythrin

C) chl. a, chl. b, $\beta -$carotene, xanthophyll

D) chl. a, chl. b, r-phycocyanin r-phycoerythrin

• question_answer143) In Mirabilis a hybrid for red (RR) and white (rr) flower produces pink (Rr) flower. A plant with pink flower is crossed with white flower the expected phenotypic ratio is:

A) red: pink : white (1 : 2:1)

B) pink: white : (1 : 1)

C) red: pink (1:1)

D) red: pink (3:1)

• question_answer144) Which of the following is the site of lipid synthesis?

A) Rough ER

B) Smooth ER

C) Golgi bodies

D) Ribosome

• question_answer145) Which of the following vessel in rabbit starts with capillaries and ends in capillaries?

A) Pulmonary artery

B) Renal vein

C) Hepatic portal vein

D) Renal artery

• question_answer146) Which character is not same in aves and mammals?

A) Single systemic arch

B) Metaneptiric kidney

C) Seven cervical vertebrae

D) Homiotherms

• question_answer147) What is pollen grain?

A) Microspore mother cell

B) Male gamete

C) Male gametophyte

D) Partially developed embryo

• question_answer148) Solenocytes and nephridia are respectively found in:

A) Platyhelminth and Annelids

B) Annelids and Nematoda

C) Cnidaria and Mollusca

D) Mollusca and Echinodermata

• question_answer149) If a cell shrinks when placed in a solution, this solution is:

A) hypotonic

B) hypertonic

C) isotonic

D) mesotonic

• question_answer150) Aquatic reptiles are:

A) ammonotelic

B) ureotelic

C) ureotelic in water

D) ureotelic over land