# Solved papers for Uttarakhand PMT Uttarakhand PMT Solved Paper-2008

### done Uttarakhand PMT Solved Paper-2008

• question_answer1) How many seconds are there in a light fermi?

A) ${{10}^{-15}}s$

B) $3.0\times {{10}^{8}}s$

C) $3.33\times {{10}^{-24}}s$

D) $3.3\times {{10}^{-7}}s$

• question_answer2) A machine is delivering constant power to drive a body along a straight line. What is the relation between the distance travelled by the body against time?

A) ${{s}^{2}}\propto {{t}^{3}}$

B) ${{s}^{2}}\propto {{t}^{-3}}$

C) ${{s}^{2}}\propto {{t}^{2}}$

D) $s\propto {{t}^{3}}$

• question_answer3) The square of resultant of two equal forces is three times their product. Angle between the forces is

A) $\pi$

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

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

D) $\frac{\pi }{3}$

• question_answer4) An object placed on a ground is in stable equilibrium. If the object is given a slight push then initially the position of centre of gravity

A) moves nearer to ground

B) rises higher above the ground

C) remains as such

D) may remain at same level

• question_answer5) How much work must be done by a force on 50 kg body in order to accelerate it from rest to 20 m/s in 10 s?

A) ${{10}^{3}}J$

B) ${{10}^{4}}J$

C) $2\times {{10}^{3}}J$

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

• question_answer6) Moment of inertia of circular loop of radius R about the axis of rotation parallel to horizontal diameter at a distance R/2 from it is

A) $M{{R}^{2}}$

B) $\frac{1}{2}M{{R}^{2}}$MR

C) $2M{{R}^{2}}$

D) $\frac{3}{4}M{{R}^{2}}$

• question_answer7) What will happen to the weight of the body at the south pole, if the earth stops rotating about its polar axis?

A) No change

B) Increases

C) Decreases but does not become zero

D) Reduces to zero

• question_answer8) A beam of metal supported at the two ends is loaded at tlie centre. The depression at the centre is proportional to

A) ${{Y}^{2}}$

B) $Y$

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

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

• question_answer9) A common hydrometer reads specific gravity of liquids. Compared to the 1.6 mark of the stem the mark 1.5 will be

A) upwards

B) downwards

C) in the same place

D) may be upward or downward depending upon the hydrometer

• question_answer10) A balloon contains$500\text{ }{{m}^{3}}$of Heat$27{}^\circ C$and 1 atmospheric pressure. The volume of Heat$-3{}^\circ C$and 0.5 atmospheric pressure will be

A) $700{{m}^{3}}$

B) $900{{m}^{3}}$

C) $1000{{m}^{3}}$

D) $500{{m}^{3}}$

• question_answer11) Which of the following is different from others?

A) Wavelength

B) Velocity

C) Frequency

D) Amplitude

• question_answer12) Two pendulums have time periods T and 5T/4. They starts SHM at the same time from the mean position. What will be the phase difference between them after the bigger pendulum completed one oscillation ?

A) $45{}^\circ$

B) $90{}^\circ$

C) $60{}^\circ$

D) $30{}^\circ$

• question_answer13) A balloon is filled with hydrogen. For sound waves, this balloon behaves like

A) a converging lens

B) a diverging lens

C) a concave mirror

D) None of the above

• question_answer14) Each of the two point charges are doubled and their distance is halved. Force of interaction becomes n times, where n is

A) 4

B) 1

C) 1/16

D) 16

• question_answer15) Two soap bubbles have radii in the ratio of 2:1. What is the ratio of excess pressures inside them?

A) 1: 2

B) 1: 4

C) 2:1

D) 4 : 1

• question_answer16) The phenomenon of Brownian movement may be taken as evidence of

A) kinetic theory of matter

B) EMT of radiation

C) corpuscular theory of light

D) photoelectric phenomenon

• question_answer17) Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

A) interference

B) diffraction

C) reflection

D) refraction

• question_answer18) An ice block floats in a liquid whose density is less than water. A part of block is outside the liquid. When whole of ice has melted, the liquid level will

A) rise

B) go down

C) remain same

D) first rise then go down

• question_answer19) Two bodies of different masses of 2 kg and 4 kg moving with velocities 2 m/s and 10 m/s towards each other due to mutual gravitational attraction. What is the velocity of their centre of mass?

A) 5 m/s

B) 6 m/s

C) 8 m/s

D) Zero

• question_answer20) Given that the displacement of an oscillating particle is given by$y=Asin(B~+Ct+D)$. The dimensional formula for (ABCD) is

A) $[{{M}_{0}}{{L}^{-1}}{{T}^{0}}]$

B) $[M{{\,}^{0}}{{L}^{0}}{{T}^{-1}}]$

C) $[{{M}^{0}}{{L}^{-1}}{{T}^{-1}}]$

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

• question_answer21) Two waves having intensities in the ratio of 9:1 produce interference. The ratio of maximum to minimum intensity is equal:

A) 10 : 8

B) 9 : 1

C) 4 :1

D) 2 : 1

• question_answer22) Four wires each of same length, diameter as. materials are connected to each other to form square. If the resistance of each wire is R. then equivalent resistance across the opposite corners is

A) R

B) R/2

C) R/4

D) None of these

• question_answer23) An electric motor runs on DC source of emf 200 V and draws a current of 10 A. If the efficiency be 40% then the resistance of armature is

A) 20

B) 80

C) 120

D) 160

• question_answer24) A capacitor having capacity of 2.0 $\mu F$ is charged to 200 V and then the plates of the capacitor are connected to a resistance wire The heat produced in joule will be

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

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

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

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

• question_answer25) A voltmeter of range 2V and resistance 300$\Omega$ cannot be converted into ammeter of range

A) 1A

B) 1mA

C) 100mA

D) 10mA

• question_answer26) If a magnet is suspended at angle$30{}^\circ$to the magnetic meridian, the dip needle makes angle of$45{}^\circ$with the horizontal. The real dip is

A) ${{\tan }^{-1}}(\sqrt{3/2})$

B) ${{\tan }^{-1}}(\sqrt{3})$

C) ${{\tan }^{-1}}(\sqrt{3/2})$

D) ${{\tan }^{-1}}(2/\sqrt{3})$

• question_answer27) Which quantity is increased in step-down transformer?

A) Current

B) Voltage

C) Power

D) Frequency

• question_answer28) The ratio of intensity at the centre of a bright fringe to the intensity at a point distant or one fourth of the distance between two successive bright fringes will be

A) 4

B) 3

C) 2

D) 1

• question_answer29) Which has more luminous efficiency?

A) A 40 W bulb

B) A 40 W fluorescent tube

C) Both have same

D) Cannot say

• question_answer30) When a ray of light enters from one medium to another, then its velocity in second medium becomes double. The maximum value of angle of incidence, so that total internal reflection may not take place will be

A) $60{}^\circ$

B) $180{}^\circ$

C) $90{}^\circ$

D) $30{}^\circ$

• question_answer31) What should be the velocity of an electron so that its momentum becomes equal to that of a photon of wavelength$5200\overset{o}{\mathop{\text{A}}}\,$?

A) 700 m/s

B) 1000 m/s

C) 1400 m/s

D) 2800 m/s

• question_answer32) A radioactive element has half-life period of 600 years. After 3000 years, what amount will remain?

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

B) $\frac{1}{16}$

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

D) $\frac{1}{32}$

• question_answer33) Beyond which frequency, the ionosphere bends any incident electromagnetic radiation but do not reflect it back towards the earth?

A) 50MHz

B) 40MHz

C) 30MHz

D) 20MHz

• question_answer34) In intrinsic semiconductor at room temperature number of electrons and holes are

A) equal

B) zero

C) unequal

D) infinite

• question_answer35) The unit of thermal conductance is

A) $W{{K}^{-1}}$

B) $J{{K}^{-1}}$

C) WK

D) JK

• question_answer36) The value of P so that the vectors $2\hat{i}-\hat{j}+\hat{k}\hat{,}+2\hat{j}-3\hat{k}$ and $3\hat{i}+p\hat{j}+5\hat{k}$ are coplanar should be

A) 16

B) $-4$

C) 4

D) $-8$

• question_answer37) A capacitor of capacitance C has charge Q and stored energy is W. If the charge is increased to 2Q, the stored energy will be

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

B) $\frac{W}{2}$

C) $2W$

D) $4W$

• question_answer38) Pure silicon at 300 K has equal electron $({{n}_{e}})$ and hole $({{n}_{h}})$ concentration of$1.5\times {{10}^{16}}{{m}^{-3}}$. Doping by indium increases ${{n}_{h}}$ to $4.5\times {{10}^{22}}{{m}^{-3}}$ . The ${{n}_{e}}$ in the doped silicon is

A) $9\times {{10}^{5}}$

B) $5\times {{10}^{9}}$

C) $2.25\times {{10}^{11}}$

D) $3\times {{10}^{19}}$

• question_answer39) A cylindrical conductor is placed near another positively charged conductor. The net charge acquired by the cylindrical conductor will be

A) positive only

B) negative only

C) zero

D) either positive or negative

• question_answer40) If the unit of force is 1 kilo newton, the length is 1 km and time 100 s, what will be the unit of mass?

A) 1,000kg

B) 1kg

C) 10,000kg

D) 100kg

• question_answer41) Ethyl acetate is obtained when methyl magnesium bromide reacts with

A) ethyl formate

B) ethyl chloroformate

C) acetyl chloride

D) carbon dioxide

• question_answer42) The most stable hydride is

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

B) $P{{H}_{3}}$

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

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

• question_answer43) The ratio of amounts of${{H}_{2}}S$needed to precipitate all the metal ions from 100 mL of 1 M$AgN{{O}_{3}}$and 100 mL of 1M$CuS{{O}_{4}}$will be

A) $1:1$

B) $1:2$

C) $2:1$

D) None of these

• question_answer44) If the electronegativity difference between two atoms A and B is 2.0, then the percentage of co-valent character in the molecule is

A) 54%

B) 46%

C) 23%

D) 72%

• question_answer45) Which of the following reaction defines$\Delta H_{f}^{o}$?

A) ${{C}_{(diamond)}}+{{O}_{2}}(g)\xrightarrow[{}]{{}}C{{O}_{2}}(g)$

B) $\frac{1}{2}{{H}_{2}}(g)+\frac{1}{2}{{F}_{2}}(g)\xrightarrow[{}]{{}}HF(g)$

C) ${{N}_{2}}(g)+3{{H}_{2}}(g)\xrightarrow[{}]{{}}2N{{H}_{3}}(g)$

D) $CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow[{}]{{}}C{{O}_{3}}(g)$

• question_answer46) Formaldehyde polymerizes to form glucose according to the reaction $6HCHO{{C}_{6}}{{H}_{12}}{{O}_{6}}$ The theoretically computed equilibrium constant for this reaction is found to be$6\times {{10}^{22}}$. If 1 M solution of glucose dissociates according to the above equilibrium, the concentration of formaldehyde in the solution will be

A) $1.6\times {{10}^{-2}}M$

B) $1.6\times {{10}^{-4}}M$

C) $1.6\times {{10}^{-6}}M$

D) $1.6\times {{10}^{-8}}M$

• question_answer47) The electronic configuration of a dipositive ion${{M}^{2+}}$is 2, 8, 14 and its mass number is 56. The number of neutrons present is

A) 32

B) 42

C) 30

D) 34

• question_answer48) If X is the total number of collisions which a gas molecule register with others per unit time under particular conditions, then the collision frequency of the gas containing JV molecules per unit volume is

A) X/N

B) NX

C) 2 NX

D) NX/2

• question_answer49) A hypothetical reaction${{A}_{2}}+{{B}_{2}}\to 2AB$follows the mechanism as given below, ${{A}_{2}}\rightleftharpoons A+A$ (fast) $A+{{B}_{2}}\xrightarrow[{}]{{}}AB+B$ (slow) $A+B\xrightarrow[{}]{{}}AB$ (fast) The order of the overall reaction is

A) 2

B) 1

C) 11

D) 0

• question_answer50) The mass of helium atom of mass number 4 is 4.0026 amu, while that of the neutron and proton are 1.0087 and 1.0078 respectively on the same scale. Hence, the nuclear binding energy per nucleon in the .helium atom is nearly

A) 5MeV

B) 7MeV

C) 10MeV

D) 14MeV

• question_answer51) Which of the following statements is correct? Dielectric constant of${{H}_{2}}{{O}_{2}}$

A) increases with dilution

B) decreases with dilution

C) is unaffected on dilution

D) None of the above

• question_answer52) For the square planar complex [M] (where, M= central metal and a, b, c and d are monodentate ligands), the number of possible geometrical isomers are

A) 1

B) 2

C) 3

D) 4

• question_answer53) Potash alum dissolves in water to give a/an

A) acidic solution of${{H}_{2}}S{{O}_{4}}$

B) alkaline solution

C) acidic solution of$HCl$

D) neutral solution

• question_answer54) The discovery of which of the following group of elements gave death blow to the Newlands law of octaves?

A) Inert gases

B) Alkaline earths

C) Rare earths

D) Actinides

• question_answer55) Vant Hoff factor more than unity indicates that the solute in solution has

A) dissociated

B) associated

C) Both [a] and [b]

D) cannot say anything

• question_answer56) How many number of atoms are there in a cube based unit cell having one atom on each corner and two atoms on each body diagonal of cube?

A) 8

B) 6

C) 4

D) 9

• question_answer57) Bleeding due to a cut can be stopped by applying ferric chloride solution in the laboratory. This is due to

A) co-agulation of negatively charged blood particles by$F{{e}^{3+}}$ions

B) co-agulation of positively charged blood particles by CF ions

C) reaction taking place between ferric ions and the haemoglobin forming a complex

D) common element, iron, in both$FeC{{l}_{3}}$and haemoglobin.

• question_answer58) Which one of the following solutions will have highest conductivity?

A) $0.1\text{ }M\text{ }C{{H}_{3}}COOH$

B) $0.1\,M\,NaCl$

C) $0.1\,M\,KN{{O}_{3}}$

D) $0.1\,M\,HCl$

• question_answer59) One of the following metals forms a volatile compound and this property is taken advantage for its extraction. This metal is

A) iron

B) nickel

C) cobalt

D) tungsten

• question_answer60) If$N{{a}^{+}}$is larger than$M{{g}^{2+}}$ion an${{S}^{2-}}$ion is larger than$C{{l}^{-}}$ion, which of the following will be stable soluble in water?

A) Sodium chloride

B) Sodium sulphide

C) Magnesium chloride

D) Magnesium sulphide

• question_answer61) Impurities of Cu and Ag from gold are removed by

A) boiling impure gold with dil.${{H}_{2}}S{{O}_{4}}$

B) boiling impure gold with cone.${{H}_{2}}S{{O}_{4}}$

C) electrolytically

D) Both [b] and [c]

• question_answer62) Which of the following salt would give$S{{O}_{2}}$ with hot and dil.${{H}_{2}}S{{O}_{4}}$and also decolourises $B{{r}_{2}}$water ?

A) $N{{a}_{2}}S{{O}_{3}}$

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

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

D) $N{{a}_{2}}S$

• question_answer63) If two compounds have the same empirical formula but different molecular formulae, they must have

A) different percentage composition

B) different molecular weights

C) same viscocity

D) same vapour density

• question_answer64) Among the following which one has weakest carbon-halogen bond?

A) Benzyl bromide

B) Bromobenzene

C) Vinyl bromide

D) Benzyl chloride

• question_answer65) Petrochemicals can be used to prepare

A) synthetic fibres

B) pesticides

C) plastics

D) All of these

• question_answer66) tert-butyl methyl ether on heating with anhydrous HI in ether gives

A) $C{{H}_{3}}OH+{{(C{{H}_{3}})}_{3}}Cl$

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

C) $C{{H}_{3}}I+{{(C{{H}_{3}})}_{3}}Cl$

D) None of the above

• question_answer67) The correctly reported answer of the addition of 4.523, 2.3 and 6.24 will have significant figures

A) two

B) three

C) four

D) five

• question_answer68) What happens if$CC{{l}_{4}}$is treated with$AgN{{O}_{3}}$?

A) A white ppt. of$AgCl$will form

B) $N{{O}_{2}}$ will be evolved

C) $CC{{l}_{4}}$will dissolve in$AgN{{O}_{3}}$

D) Nothing will happen

• question_answer69) $^{23}Na$ is more stable isotope of Na. Find out the process by which$_{11}^{24}Na$can undergo radioactive decay

A) ${{\beta }^{-}}$emission

B) $\alpha -$emission

C) ${{\beta }^{+}}$ emission

D) K electron capture

• question_answer70) The heat of combustion of solid benzoic acid at constant volume is$-321.30\text{ }kJ$ at$27{}^\circ C$. The heat of combustion at constant pressure is

A) $-321.30-300R$

B) $-321.30+300R$

C) $-321.30-150R$

D) $-321.30+900\text{ }R$

• question_answer71) In which of the following compounds$-OH$ group is least reactive?

A)

B)

C)

D) All are equally reactive.

• question_answer72) lodoform is obtained when ethanol is heated with

A) $KI$and aq KOH

B) ${{I}_{2}}$and aq$KOH$

C) ${{I}_{2}}/$aq$KI$

D) $HI$and$HI{{O}_{3}}$

• question_answer73) The total number of acylic isomers including the stereoisomers (geometrical and optical), with the molecular formula${{C}_{4}}{{H}_{7}}Cl$is

A) 12

B) 11

C) 10

D) 9

• question_answer74) The alkyl halides that can be made by free radical halogenation of alkanes are

A) $RCl,$and$RBr$but not RP or$RI$

B) $RF,RCl$and$RBr$but not$RI$

C) $RF,\text{ }RCl,\text{ }RBr,\text{ }RI$

D) $RF,RCl$and$RI$but$RBr$

• question_answer75) Silica is a/an

A) acidic flux only

B) gangueonly

C) basic flux only

D) both gangue and acidic flux

• question_answer76) The nodes present in$3p-$orbitals are

A) one spherical, one planar

B) two spherical

C) two planar

D) one planar

• question_answer77) The number of$\alpha -$and$\beta -$particles emitted in nuclear reaction$_{90}T{{h}^{228}}{{\xrightarrow[{}]{{}}}_{83}}B{{i}^{212}}$are respectively

A) 4, 1

B) 3, 7

C) 8, 1

D) 4, 7

• question_answer78) Two bottles A and B contains 1 M and 1m aqueous solution of sulphuric acid respectively

A) A is more concentrated than B

B) B is more concentrated than A

C) concentration of A is equal to concentration of B

D) it is not possible to compare the concentrations

• question_answer79) A salt on treatment with dil.$HCl$ gives a pungent smelling gas and a yellow precipitate. The salt gives green flame test and a yellow precipitate with potassium chromate the salt is

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

B) $Ba{{S}_{2}}{{O}_{3}}$

C) $Pb{{S}_{2}}{{O}_{3}}$

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

• question_answer80) Which of the oxide of manganese is amphoteric?

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

B) $M{{n}_{2}}{{O}_{3}}$

C) $M{{n}_{2}}{{O}_{7}}$

D) $MnO$

• question_answer81) Which of the following alkenes is most reactive towards cationic polymerization?

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

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

C) ${{H}_{2}}C=CH{{C}_{6}}{{H}_{5}}$

D) ${{H}_{2}}C=CHC{{O}_{2}}C{{H}_{3}}$

• question_answer82) An organic compound,${{C}_{3}}{{H}_{6}}O$does not give a precipitate with 2, 4-dinitrophenyl hydrazine reagent and does not react with metallic sodium. It could be

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

B) $C{{H}_{2}}=CHC{{H}_{2}}OH$

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

D) $C{{H}_{2}}=CHOC{{H}_{3}}$

• question_answer83) Oxidation of 1-butene with hot$KMn{{O}_{4}}$solution produces

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

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

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

D) ${{(C{{H}_{3}})}_{2}}C=O+C{{O}_{2}}$

• question_answer84) A mixture of 1-chlorobutane and 2-chloro- butane when treated with alcoholic KOH gives:

A) 1-butene

B) 2-butene

C) isobutylene

D) mixture of 1-butene +2-butene

• question_answer85) Out of the two compounds shown below, the vapour pressure of B at a particular temperature is expected to be

A) higher than that of A

B) lower than that of B

C) same as that of A

D) can be higher or lower depending upon the size of the vessel.

• question_answer86) Roasted tin stone ore after washing with water is known as

A) block tin

B) white tin

C) black tin

D) granulated tin

• question_answer87) Which of the following has strongest hydrogen bonding?

A) Ethylamine

B) Ammonia

C) Ethyl alcohol

D) Diethyl ether

• question_answer88) Consider the following statements The rate law for the acid catalysed hydrolysis of an ester being given as Rate$=k[{{H}^{+}}]$ [ester]$=k$[ester]. If the acid concentration is doubled at constant ester concentration 1. The second order rate constant, k is doubled. 2. The pseudo first order rate constant, k is doubled. 3. The rate of the reaction is doubled Which of the above statements are correct?

A) 1 and 2

B) 2 and 3

C) 1 and 3

D) 1, 2 and 3

• question_answer89) A fibrous mineral which can withstand red hot flames without any damage is

A) talc

B) glass wool

C) soap stone

D) asbestos

• question_answer90) When o- or$p-$phenolsulphonic acid is treated with bromine water, the product formed is

A) 2, 4-dibromophenol

B) 2, 4, 6-tribromophenol

C) 3-bromophenol boric acid

D) 3, 5-dibromophenol

• question_answer91) An alkene on vigorous oxidation with$KMn{{O}_{4}}$gives only acetic acid. The alkene is

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

B) $C{{H}_{3}}CH=CHC{{H}_{3}}$

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

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

• question_answer92) Which of the following has the maximum heat of hydrogenation?

A)

B)

C)

D)

• question_answer93) Deflection back of a few particles on hitting thin foil of gold shows that

A) nucleus is heavy

B) nucleus is small

C) Both [a] and [b]

D) electrons create hinderance in the movement of$\alpha -$particles

• question_answer94) Which of the following does not form an oxime?

A) Glucose

B) Glucose penta-acetate

C) Arabinose

D) Galactose

• question_answer95) An aromatic compounds X with molecular formul${{C}_{8}}{{H}_{10}}$produces on nitration one mononitro derivative and three dinitro derivatives. Compound X would be

A) ethyl benzene

B) $m-$xylene

C) $o-$xylene

D) $p-$xylene

• question_answer96) The end product C in the following sequence of chemical reactions is $C{{H}_{3}}COOH\xrightarrow[{}]{CaC{{O}_{3}}}A\xrightarrow[{}]{heat}B\xrightarrow[{}]{N{{H}_{2}}OH}C$

A) acetaldehyde oxime

B) formaldehyde oxime

C) methyl nitrate

D) acetoxime

• question_answer97) The only cations present in a slightly acidic solution are$F{{e}^{3+}},Z{{n}^{2+}}$and$C{{u}^{2+}}$The reagent that when added in excess to this solution would identify and separate$F{{e}^{3+}}$ in one step is

A) $2M\,HCl$

B) $6M\,N{{H}_{3}}$

C) $6M\,NaOH$

D) ${{H}_{2}}S\,gas$

• question_answer98) The nucleus of an atom can he assumed to be spherical. The radius of the nucleus of mass number A is given by$1.25\times {{10}^{-13}}\times {{A}^{1/3}}cm$. Radius of atom is one A. If the mass number is 64, then the fraction of the atomic volume that is occupied by the nucleus is

A) $1.0\times {{10}^{-3}}$

B) $5.0\times {{10}^{-5}}$

C) $2.5\times {{10}^{-2}}$

D) $1.25\times {{10}^{-13}}$

• question_answer99) Carboxylic acids readily dissolve in aqueous sodium bicarbonate, liberating carbon dioxide. Which one of the following is correct?

A) Free carboxylic acid and its conjugate base are of comparable stability

B) The free carboxylic acid is more stable than its conjugate base

C) The conjugate base of the carboxylic acid is more stable than the free carboxylic acid

D) The conjugate acid of the carboxylic acid is more stable than the free carboxylic acid

• question_answer100) Lead pipes can be used safely for carrying

A) soft water

B) soft water first heated with lime stone

C) conc. $HN{{O}_{3}}$

D) soft as well as hard water

• question_answer101) The branch of biology, which deals with the study of processes and functions of an organism, is called

A) histology

B) anatomy

C) physiology

D) entomology

• question_answer102) Virus multiplies in

A) soil

C) living tissue

D) culture medium

• question_answer103) Which of the following technique, other than microscopy is used for study of cell ?

A) Maceration

B) Plasmolysis

C) Chromatography

• question_answer104) Robert Hooke used the term cell in the year

A) 1650

B) 1665

C) 1865

D) 1960

• question_answer105) Protein synthesis takes place in

A) ribosomes

B) chloroplasts

C) mitochondria

D) Golgi bodies

• question_answer106) Replication of centriole occurs during

A) interphase

B) prophase

C) late prophase

D) late telophase

• question_answer107) L-shaped chromosomes are also called

A) acrocentric

B) telocentric

C) sub-metacentric

D) None of these

• question_answer108) Which of the following is/are grouped under phanerogams?

A) Angiosperms

B) Gymnosperms

C) Pteridophytes

D) Both [a] and [b]

• question_answer109) A bacterium divides after every 35 minutes. If a culture containing ${{10}^{5}}$cells per mL is grown, then cell concentration per mL after 175 minutes will be

A) $175\times {{10}^{5}}$

B) $125\times {{10}^{5}}$

C) $48\times {{10}^{5}}$

D) $32\times {{10}^{5}}$

A) algae

B) lichen

C) fungus

D) angiosperm

• question_answer111) Which of the following is an algal parasite?

A) Volvox

B) Ulothrix

C) Porphyra

D) Cephaleuros

• question_answer112) Which of the following is true about bryophytes ?

A) They are thalloid

B) They contain chloroplast

C) They possess archegonia

D) All of the above

• question_answer113) The kidney-shaped covering of sorus Dryopteris, is called

A) placenta

B) ramentum

C) sporophyll

D) indusium

• question_answer114) Which of the following is a wheat fruit?

A) Achene

B) Cypsella

C) Caryopsis

D) Endosperm

• question_answer115) A gymnospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm is

A) 24

B) 16

C) 12

D) 8

• question_answer116) Tyioses thickenings are seen in

A) collenchyma

B) phloem cells

C) ray parenchyma only

D) ray parenchyma and xylem cells

• question_answer117) Which of the following plant shows multiple epidermis?

A) Croton

B) Allium

C) Nerium

D) Cucurbita

• question_answer118) Double fertilization occurs among

A) algae

B) bryophytes

C) angiosperms

D) gymnospenr

• question_answer119) The endosperm in angiosperm develops from

A) zygote

B) secondary nucleus

C) chalazal polar nucleus

D) micropylar polar nucleus

• question_answer120) The fertilization in which male gametes are carried through pollen tube is known as

A) syngamy

B) porogamy

C) siphonogamy

D) chalazogamy

• question_answer121) Which of the following theory gives the latest explanation for the closure of stomata ?

A) ABA theory

B) Munch theory

C) Starch glucose theory

D) Active ${{K}^{+}}$transport theory

• question_answer122) Loss of liquid water by guttation occurs through

A) hydathodes

B) stomata

C) cuticle

D) bark

• question_answer123) Which of the following is the first compound that accepts carbon dioxide during dark phase of photosynthesis?

B) RuBP

C) Ferredoxin

D) Cytochrome

• question_answer124) Oxygen which is liberated during photosynthesis, comes from

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

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

C) chlorophyll

D) phosphoglyceric acid

• question_answer125) In ${{C}_{4}}$ plants, the carbon dioxide fixation occurs in

A) guard cells

B) spongy cells

D) bundle sheath cells

• question_answer126) Ethyl alcohol is commercially manufactured from

A) bajra

B) grapes

C) maize

D) sugarcane

• question_answer127) Last electron acceptor in respiration is

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

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

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

• question_answer128) A hormone delaying senescence is

A) auxin

B) cytokinins

C) ethylene

D) gibberellin

• question_answer129) Which of the following induces flowering in long day plants ?

A) Gibberellins

B) Cytokinin

C) Auxins

D) Ethylene

• question_answer130) What name has been assigned to the genus produced by a cross between cabbage and radish?

A) Secale

B) Bursapastoris

C) Lysogenicophyll

D) Raphanobrassica

• question_answer131) Genetic counsellors can identify heterozygous individuals by

A) height of individuals

B) colour of individuals

C) screening procedures

D) All of the above

• question_answer132) The term heterosis was first coined by

A) McClintock

B) Poweri

C) Swaminathan

D) None of these

• question_answer133) Somatic hybridization is a technique of

A) natural breeding

B) natural pollination

C) artificial pollination

D) somatic cells hybridization

• question_answer134) which of the following is initiation codon in eukaryotes ?

A) UAG

B) UGA

C) UAA

D) AUG

• question_answer135) Which of the following species are restricted to an area?

A) Sibling species

B) Endemic species

C) Allopatric species

D) Sympatric species

• question_answer136) Biological concept of species is mainly based on

A) reproductive isolation

B) morphological features only

C) methods of reproduction only

D) morphology and methods of reproduction

• question_answer137) Which of the following supports a dense population of plankton and littoral vegetation?

A) Oligotrophic

B) Eutrophic

C) Lithotrophic

D) Agroecotrophic

A) less in diversity

B) more in diversity

C) man does not make ecosystem

D) more stable than natural ecosystem

• question_answer139) Crop rotation is used by farmers to increase

A) soil fertility

B) community area

C) organic content of soil

D) nitrogenous content in the soil

• question_answer140) Which of the following organism form the decomposers ?

A) Pteris

B) Bacteria

C) Saprophytic fungi

D) Both [b] and [c]

• question_answer141) Fly-ash is a/an

A) insectivorous plant

B) light airborn paniculate matter

C) new name of orchid plant

D) causal organism of various diseases

• question_answer142) Some effects of sulphur dioxide and its transformation products on plant include

A) plasmolysis

B) Golgi body destruction

C) protein dis-integration

D) chlorophyll destruction

• question_answer143) Which of the following plant is used for the purification of water?

A) Beggiata

B) Chlorella

C) Spirogyra

D) Eichhornia

• question_answer144) In the treatment of waste water discharge, which treatment stage involves biological treatment?

A) Primary treatment

B) Secondaiy treatment

C) Tertiary treatment

D) Reverse osmosis stage

• question_answer145) Which of the following is considered to be the best chemical method of fixing atmospheric nitrogen?

A) Fisher method

B) Decan method

C) Haber-Bosch method

D) Paranas-Meyerhoff method

• question_answer146) Desired improved varieties of economically useful crops are raised by

A) migration

B) biofertilizer

C) hybridization

D) natural selection

• question_answer147) Indian rose wood tree is a common name of

A) Acacia

B) Shorea

C) Dalbergia

D) Eucalyptus

• question_answer148) Emasculation is concerned with

A) hybridization

B) clonal selection

C) mass selection

D) pure line selection

• question_answer149) Which of the following insecticide is obtained from the roots of Derris elleptica ?

A) Cinerin

B) Nicotine

C) Rotenone

D) Pyrethrum

• question_answer150) In maize, hybrid vigour is exploited by

A) bombarding the protoplast with DNA

B) crossing of two inbreed parental lines

C) harvesting seeds from the most productive plants

D) inducing mutations

• question_answer151) Which of the following is not vestigial in man?

A) Tail vertebrae

B) Nails

C) Nictitating membrane

D) Vermiform appendix

• question_answer152) The chemical used in National Malaria Eradication Programme is

A) 2,4-D

B) BHC

C) DDT

D) Pyrethroid

• question_answer153) A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis ?

A) Introns

B) Exons

C) Both [a] and [b]

D) None of these

• question_answer154) The number of hydrogen bonds between adenine and thymine in a DNA molecule is

A) two

B) three

C) four

D) eight

• question_answer155) The enzyme, which combines with non-protein part to form a functional enzyme known as

A) Co-enzyme

B) holoenzyme

C) apoenzyme

D) prosthetic group

• question_answer156) Which of the following enzyme digest protein in stomach ?

A) Trypsin

B) Pepsin

C) Crepsin

D) None of these

• question_answer157) Passive food ingestion in Amoeba is known as

A) import

B) invagination

C) circumfluence

D) circumvallatic-

• question_answer158) The slime moulds are characterized by the presence of

A) elaters

B) pseudoelaters

C) capillitium

D) capitulum

• question_answer159) Ecdysone is secreted from

A) Insecta

B) Trematoda

C) Nematoda

D) Polychaeta

• question_answer160) In the life cycle of mosquito, comma-shaped stage is

A) larval stage

B) pupal stage

C) imago stage

D) None of these

• question_answer161) Haemocoel is found in

A) Hydra and Aurelia

B) Taenia and Ascaris

C) Cockroach and Pila

D) Balanoglossus and Herdmania

• question_answer162) The group of Anamniota includes

A) reptiles and birds

B) birds and mammals

C) fishes and amphibians

D) reptiles and mammals

• question_answer163) The excretory material of bony fish is

A) urea

B) protein

C) ammonia

D) amino acid

• question_answer164) Different colour of frog skin are controller by

A) hormones

B) melanocytes

C) nervous system

D) Both [a] and [c]

• question_answer165) Blastula of frog has

A) blastopore

B) blastocoel

C) archenteron

D) gastropore

• question_answer166) Carotene pigment is found in the cells of

A) dermis

B) epidermis

D) Both [b] and [c]

• question_answer167) Deboves membrane is a layer of

A) muscular tissue

B) epithelial tissue

C) connective tissue

D) All of the above

• question_answer168) Achilles tendon is associated with

A) gluteus muscle

B) hamstring muscle

D) gastrocnemius muscle

• question_answer169) The leucocytes contain, which of the following in large quantity?

A) Basophils

B) Neutrophils

C) Eosinophils

D) Monocytes

• question_answer170) Which part of our body secreted the hormone secretin ?

A) Ileum

B) Stomach

C) Duodenum

D) Oesophagus

• question_answer171) During inspiration, the diaphragm

A) expands

B) shows no change

C) contracts and flattens

D) relaxes to become dome-shaped

• question_answer172) The oxygen toxicity is related with

A) blood poisoning

B) collapse of alveolar walls

C) failure of ventilation of lungs

D) Both [a] and [b]

• question_answer173) Cardiac output is determined by

A) heart rate

B) stroke volume

C) blood flow

D) Both [a] and [b]

• question_answer174) The important function of lymph is to

A) transport oxygen to the brain

B) transport carbon dioxide to the lungs

C) return RBCs to the lymph nodes

D) return interstitial fluid to the blood

• question_answer175) The lining of intestine and kidneys in humans is

A) keratinized

B) brush border

C) ciliated

D) None of these

• question_answer176) The yellow colour of urine is due to the presence of

A) urea

B) uric acid

C) urochrome

D) bilirubin

• question_answer177) The Leydig cells secrete

A) oestrogen

B) testosterone

C) progesterone

D) corticosterone

• question_answer178) The function of pineal body is to

A) lighten the skin colours

B) control sexual behaviour

C) regulates the period of puberty

D) All of the above

• question_answer179) Which of the following nerve is purely motor nerve ?

A) Vagus

B) Facial

C) Abducens

D) Trigeminal

• question_answer180) Which of the following part of a neuron is covered by fatty sheath?

A) Axon

B) Cyton

C) Dendrite

D) Node of Ranvier

• question_answer181) Synsacrum of fowl is consist of about

A) 29 vertebrae

B) 3 vertebrae

C) 16 vertebrae

D) single vertebrae

• question_answer182) In rabbit, head of the epididymis present at the head of the testes, is called

A) vas deferens

B) gubemaculum

C) cauda epididymis

D) caput epididymis

• question_answer183) The extra embryonic membranes of mammalian embryo are derived from

A) trophoblast

B) follicle cells

C) formative cells

D) inner cell mass

• question_answer184) The eggs of silk moth are

A) homolecithal

B) telolecithal

C) mesolecithal

D) centrolecithal

• question_answer185) Which of the following was formed in S. Millers experiment?

A) Amino acids

B) Nucleic acids

D) Microspheres

• question_answer186) Trilobites were evolved during, which of the following period?

A) Silurian

B) Cambrian

C) Ordovician

D) Precambrian

• question_answer187) Which of the following variations are temporary and have nothing to do with the last or next generation?

A) Hereditary variations

B) Discontinuous variations

C) Environmental variations

D) None of the above

• question_answer188) The modem man differs from the apes in

A) protruding eyes

B) spare body hair

C) wearing of clothes

D) arms shorter than legs

• question_answer189) The highest cranial capacity is/was present in

A) Java man

B) peking man

C) handy man

D) modem man

• question_answer190) Wild life is

A) any living organism in any habitat

B) predatory animals in their natural habitat

C) any living organisms in its natural habitat

D) economically important animals and plants

• question_answer191) A marriage between normal visioned man and colourblind woman will produce, which of the following type of offsprings ?

A) Normal sons and carrier daughters

B) Colourblind sons and carrier daughters

C) Colourblind sons and 50% carrier daughters

D) 50% colourblind sons and 50% carrier daughters

• question_answer192) Haemophilia is a

A) deficiency disorder

D) autosomal sex disorder

• question_answer193) UV radiation from sun causes, which of the following disorder of eyes ?

A) Cataract

B) Glaucoma

C) Dilation pupil

D) Some defect of retina

• question_answer194) The study of relationship between size and shape is called

A) allopatric

B) allelopathy

C) allometry

D) allogamy

• question_answer195) Which of the following is the most sparsely populated state of India ?

A) Manipur

B) Rajasthan

C) Meghalaya

• question_answer196) The natural parthenogenesis is found in

A) sharks

B) housefly

C) Drosophilia

D) honey bee

• question_answer197) The interferons are

A) antiviral proteins

B) antibiotic proteins

C) antigen proteins

D) antibacterial partied

• question_answer198) An organic substance bound to an enzyme and essential for its activity is called

A) Co-enzyme

B) holoenzyme

C) apoenzyme

D) isoenzyme

• question_answer199) Who coined the term antibiotics?

A) Darwin

B) Woodruff

C) Flemming

D) Selman Waksman

• question_answer200) A complex polysaccharide produced from sucrose by the bacterium Leuconostoc mesenteries is

A) chitin

B) starch

C) cellulose

D) dextran