Solved papers for AFMC AFMC Solved Paper-2009

AFMC Solved Paper-2009 Total Questions - 200

1) In which process the pV indicator diagram is a straight line parallel to volume axis

A)

isothermal

B)

isobaric

C)

irreversible

D)

adiabatic

View Answer
2) A body executes simple harmonic motion under the action of force F1 with a time period \[\frac{4}{5}\] s. If die force is changed to F2 it executes simple harmonic motion with time period \[\frac{3}{5}\] s. If both forces F1 and F2 act simultaneously in the same direction on the body, its time period will be

A)

\[\frac{12}{25}\,s\]

B)

\[\frac{24}{25}\,s\]

C)

\[\frac{35}{24}\,s\]

D)

\[\frac{15}{12}\,s\]

View Answer
3) A diatomic gas is heated at constant pressure. What fraction of the heat energy is used to increase the internal energy?

A)

\[\frac{3}{5}\]

B)

\[\frac{3}{7}\]

C)

\[\frac{5}{7}\]

D)

\[\frac{5}{9}\]

View Answer
4) In interference pattern, the energy is

A)

created at the maximum

B)

destroyed at the minimum

C)

conserved but redistributed

D)

All of the above

View Answer
5) A red flower kept in green light will appear

A)

red

B)

yellow

C)

black

D)

white

View Answer
6) A band playing music at a frequency f is moving towards a wall at a speed vb. A motorist is following the band with a speed vm. If v be the speed of the sound, the expression for beat frequency heard by motorist is

A)

\[\frac{v+{{v}_{m}}}{v+{{v}_{b}}^{2}}f\]

B)

\[\frac{v+{{v}_{m}}}{v-{{v}_{b}}}f\]

C)

\[\frac{2{{v}_{b}}(v+{{v}_{m}})}{{{v}^{2}}-{{v}_{b}}^{2}}f\]

D)

\[\frac{2{{v}_{m}}(v+{{v}_{b}})}{{{v}^{2}}-{{v}_{m}}^{2}}f\]

View Answer
7) An eye specialist prescribes spectacles having a combination of a convex lens of focal length 40 cm in contact with a concave lens of focal length 25 cm. The power of this lens combination will be

A)

+ 1.5 D

B)

- 1.5 D

C)

+ 6.67 D

D)

- 6.67 D

View Answer
8) When light wave suffers reflection at the interface between air and glass, the change of phase of reflected wave is equal to

A)

zero

B)

n / 2

C)

n

D)

2 n

View Answer
9) A lens behaves as a converging lens in air and diverging lens in water. The refractive index of the material of the lens is

A)

equal to that of water

B)

less than that of water

C)

greater than that of water

D)

Nothing can be predicted

View Answer
10) The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately

A)

540 nm

B)

400 nm

C)

310 nm

D)

220 nm

View Answer
11) The electron emitted in beta radiation originates from

A)

inner orbits of atoms

B)

free electron existing in nuclei

C)

decay of neutron in the nucleus

D)

phoron escaping from the nucleus

View Answer
12) If elements with principal quantum number n > 4 were not allowed in nature, then the number of possible elements would be

A)

32

B)

60

C)

18

D)

4

View Answer
13) The magnifying power of telescope is high if

A)

both objective and eye-piece have short focal length

B)

both objective and eye-piece have long focal length

C)

the objective has a long focal length and the eye-piece has a short focal length

D)

the objective has a short focal length and the eye piece has a long focal length

View Answer
14) What is the current through an ideal pn - junction diode shown in figure below?

A)

Zero

B)

10 mA

C)

20 mA

D)

50 mA

View Answer
15) The output form of a full wave rectifier is

A)

an AC voltage

B)

a DC voltage

C)

zero

D)

a pulsating unidirectional voltage

View Answer
16) Suitable impurities are added to a semiconductor depending on its use. This is done to

A)

increase its life

B)

enable it to withstand high voltage

C)

increase its electrical conductivity

D)

increase its electrical resistivity

View Answer
17) Absorption of X-rays is maximum in which of the following material sheets of same thickness?

A)

Cu

B)

Au

C)

Be

D)

Pb

View Answer
18) Lenz's law is a consequence of the law of conservation of

A)

charge

B)

mass

C)

momentum

D)

energy

View Answer
19) A magnetic needle is kept in a non-uniform magnetic field. It experience

A)

a force only but not a torque

B)

a force and torque both

C)

a torque only but not a force

D)

neither a torque nor a force

View Answer
20) The magnitude of magnetic induction for a current carrying toroid of uniform cross - section is

A)

uniform over the whole cross-section

B)

maximum on the outer edge

C)

maximum on the inner edge

D)

maximum at the centre of cross-section

View Answer
21) Isogonic lines are those for which

A)

declination is the same at all places on the line

B)

angle of dip is the same at the place on die line

C)

die value of horizontal component of earth's magnetic field is the same

D)

All of the above

View Answer
22) An electric current passes through a long straight wire. At a distance 5 cm from the wire, the magnetic field is B. The field at 20 cm from the wire would be

A)

2 B

B)

B/4

C)

B/2

D)

B

View Answer
23) An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Their readings are A and V respectively. If another resistances is connected in parallel with the voltmeter, then

A)

both A and V will increase

B)

both A and V will decrease

C)

A will decrease and V will increase

D)

A will increase and V will decrease

View Answer
24) The core of transformer is laminated to reduce the effect of

A)

copper losses

B)

flux leakage

C)

hysteresis loss

D)

eddy current

View Answer
25) The average power dissipation in pure inductance is

A)

\[\frac{1}{2}L{{I}^{2}}\]

B)

\[2L{{I}^{2}}\]

C)

\[\frac{1}{4}L{{I}^{2}}\]

D)

zero

View Answer
26) The charge given to any conductor resides on its outer surface, because

A)

the free charge tends to be in its minimum potential energy state

B)

the free charge tends to be in its minimum kinetic energy state

C)

the free charge tends to be in its maximum potential energy state

D)

the free charge tends to be in its maximum kinetic energy state

View Answer
27) identical mercury droplets charged to the same potential V coalesce to form a single bigger drop. The potential of new drop will be

A)

\[\frac{V}{n}\]

B)

nV

C)

nV2

D)

n2/3 V

View Answer
28) For protecting sensitive equipment from external magnetic field, it should be

A)

wrapped with insulation around it when passing current through it

B)

placed inside an iron can

C)

surrounded with Cu sheet

D)

placed inside aluminium can

View Answer
29) The potential difference across the terminals of a battery is 50 V when 11 A current is drawn and 60 V when 1 A current is drawn. The emf and the internal resistance of the battery are

A)

62 V, 2\[\Omega \]

B)

63 V, 1\[\Omega \]

C)

61 V, 1\[\Omega \]

D)

64 V, 2\[\Omega \]

View Answer
30) Four resistances 100, 50, 70 and 30 are connected so that they form the sides of a rectangle AB, BC, CD, and DA respectively. Another resistance of 100 is connected across the diagonal AC. The equivalent resistance between A and B is

A)

20

B)

50

C)

7 ft

D)

100

View Answer
31) The potential energy of a charged parallel plate capacitor is U0. If a slab of dielectric constant K is inserted between the plates, then the new potential energy will be

A)

\[\frac{{{U}_{0}}}{K}\]

B)

\[{{U}_{0}}{{K}^{2}}\]

C)

\[\frac{{{U}_{0}}}{{{K}^{2}}}\]

D)

\[{{U}_{0}}^{2}\]

View Answer
32) Two similar heater coils separately take 10 min to boil a certain amount of water. If both coils are connected in series, time taken to boil the same amount of water will be

A)

15 min

B)

20 min

C)

7.5 min

D)

25 min

View Answer
33) Same current is being passed through a copper voltameter and a silver voltameter. The rate of increase in weights of the cathode of the two voltameters will be proportional to

A)

atomic masses

B)

atomic number

C)

relative densities

D)

None of the above

View Answer
34) Two equal and opposite charge (+ q and - q) are situated at x distance from each other, the value of potential at very far point will depend upon

A)

only on q

B)

only on x

C)

on qx

D)

on \[\frac{q}{x}\]

View Answer
35) In a potentiometer of one- metre length, an unknown emf voltage source is balanced at 60 cm length of potentiometer wire, while a 3 V battery is balanced at 45 cm length. Then the emf of the unknown voltage source is

A)

3 V

B)

2.25 V

C)

4 V

D)

4.5 V

View Answer
36) A car travelling on a straight path moves with uniform velocity v1 for some time and with velocity v2 for next equal time, the average velocity is given by

A)

\[\sqrt{{{v}_{1}}{{v}_{2}}}\]

B)

\[\left( \frac{{{v}_{1}}+{{v}_{2}}}{2} \right)\]

C)

\[{{\left( \frac{1}{{{v}_{1}}}+\frac{1}{{{v}_{2}}} \right)}^{-1}}\]

D)

\[2{{\left( \frac{1}{{{v}_{1}}}+\frac{1}{{{v}_{2}}} \right)}^{-1}}\]

View Answer
37) A particle of mass m moves in a circular path radius r under the action of a force \[\frac{m{{v}^{2}}}{r}\].The work done during its motion over half of the circumference of the circular path will be

A)

\[\left( \frac{m{{v}^{2}}}{r} \right)\times 2\pi r\]

B)

\[\left( \frac{m{{v}^{2}}}{r} \right)\times \pi r\]

C)

\[\frac{\left( 2\pi r \right)}{\left( \frac{m{{v}^{2}}}{r} \right)}\]

D)

zero

View Answer
38) Dimensions of self inductance are

A)

[MLT-2A-3]

B)

[ML-2T-1A-2]

C)

[ML2 T-2 A-2]

D)

[ML2T-2A-1]

View Answer
39) A car of mass m is moving with momentum p. If\[\mu \] be the coefficient of friction between the tyres and the road, what will be stopping distance due to friction alone?

A)

\[\frac{{{p}^{2}}}{2\mu g}\]

B)

\[\frac{{{p}^{2}}}{2m\mu g}\]

C)

\[\frac{{{p}^{2}}}{2{{m}^{2}}\mu g}\]

D)

\[\frac{{{p}^{2}}}{2mg}\]

View Answer
40) A neutron is moving with velocity u. It collides head on and elastically with an atom of mass number A. If the initial kinetic energy of the neutron be E, how much kinetic energy will be retained by the neutron after collision?

A)

\[{{\left( \frac{A}{A+1} \right)}^{2}}E\]

B)

\[\frac{A}{{{\left( A+1 \right)}^{2}}}E\]

C)

\[{{\left( \frac{A-1}{A+1} \right)}^{2}}E\]

D)

\[\frac{A-1}{{{\left( A+1 \right)}^{2}}}E\]

View Answer
41) If the momentum of a particle is increased by 20%, then its kinetic energy increases by

A)

44%

B)

66%

C)

80%

D)

30%

View Answer
42) Three point masses, each of mass M are placed at the comers of an equilateral triangle of side L. The moment of inertia of this system about an axis along one side of the triangle is

A)

\[\frac{1}{3}M{{L}^{2}}\]

B)

\[\frac{3}{2}M{{L}^{2}}\]

C)

\[\frac{3}{4}M{{L}^{2}}\]

D)

ML2

View Answer
43) A thin circular ring of mass M and radius R is rotating about its axis with a constant angular velocity\[\omega \]. Two objects, each of mass m, are connected gently to the ring. The ring now rotates with an angular velocity

A)

\[\frac{\omega M}{M+m}\]

B)

\[\frac{\omega \left( M-2M \right)}{\left( M+2m \right)}\]

C)

\[\frac{\omega \left( M+2m \right)}{M}\]

D)

\[\frac{\omega M}{M+2m}\]

View Answer
44) A satellite of mass m is moving in a circular orbit of radius R above the surface of a planet of mass M and radius R. The amount of work done to shift the satellite to higher orbit of radius is

A)

\[mgR\]

B)

\[\frac{mgR}{6}\]

C)

\[\frac{mMgR}{\left( M+m \right)}\]

D)

\[\frac{mMgR}{6\left( M+m \right)}\]

View Answer
45) In a gravitational force field a particle is taken from A to B along different paths as shown in figure. Then

A)

work done along path I will be maximum

B)

work done along path III wilt be maximum

C)

work done along path IV will be maximum

D)

work done along all the paths will be the same

View Answer
46) A wire of length L and area of cross-section A is made of material of Young's modulus Y. If the wire is stretched by the amount x, the work done is

A)

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

B)

\[YA{{x}^{2}}L\]

C)

\[\frac{YAx}{2L}\]

D)

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

View Answer
47) The potential energy of a molecule increases when it is brought to the surface from the interior of a liquid because

A)

at the free liquid surface gravitational potential energy is more

B)

work has to be done to move a molecule to the surface against the repulsive component of the inter molecular forces

C)

work has to be done to move a molecule to the surface against the attraction from Other molecules

D)

the temperature of the liquid surface is always more than that of the interior of the liquid

View Answer
48) When a van der Waals' gas undergoes free expansion then its temperature

A)

decreases

B)

increases

C)

does not change

D)

depends upon the nature of the gas

View Answer
49) A cylinder of radius r and of thermal conductivity K1 is surrounded by a cylindrical shell of inner radius r and outer radius 2r made of a material of thermal conductivity K2. The effective thermal conductivity of the system if

A)

\[\frac{1}{3}\left( {{K}_{1}}+2{{K}_{2}} \right)\]

B)

\[\frac{1}{2}\left( 2{{K}_{1}}+3{{K}_{2}} \right)\]

C)

\[\frac{1}{4}\left( 3{{K}_{2}}+2{{K}_{1}} \right)\]

D)

\[\frac{1}{4}\left( {{K}_{1}}+3{{K}_{2}} \right)\]

View Answer
50) The tungsten filament of an electric lamp has a surface area A and a power rating P. If the emissivity of the filament is i; and a is Stefan's constant, the steady temperature of the filament will be

A)

\[T={{\left( \frac{P}{A\,\varepsilon \,\sigma } \right)}^{4}}\]

B)

\[T=\left( \frac{P}{A\,\varepsilon \,\sigma } \right)\]

C)

\[T={{\left( \frac{A\,\varepsilon \,\sigma }{P} \right)}^{\frac{1}{4}}}\]

D)

\[T={{\left( \frac{P}{A\,\varepsilon \,\sigma } \right)}^{\frac{1}{4}}}\]

View Answer
51) The pH value of \[1\times {{10}^{-4}}\text{M}\,\text{NAOH}\]solution is

A)

4

B)

10

C)

6

D)

between 6-7

View Answer
52) The C?H bond distance is the longest in

A)

\[{{C}_{2}}{{H}_{2}}\]

B)

\[{{C}_{2}}{{H}_{4}}\]

C)

\[{{C}_{2}}{{H}_{4}}B{{r}_{2}}\]

D)

\[{{C}_{6}}{{H}_{6}}\]

View Answer
53) Which represents the correct order of first ionisation potential of third period elements?

A)

\[Na\text{ }>\text{ }Mg\text{ }>\text{ }Al\text{ }>\text{ }Si\]

B)

\[Na\text{ }<\text{ }Mg\text{ }<\text{ }Al\text{ }<\text{ }Si\]

C)

\[Na\text{ }<\text{ }Si\text{ }<\text{ }Al\text{ }<\text{ }Mg\]

D)

\[Na\text{ }<\text{ }Al\text{ }<\text{ }Mg\text{ }<\text{ }Si\]

View Answer
54) By which of the following processes, pure nitrogen gas is prepared?

A)

\[(N{{H}_{4}})C{{r}_{2}}{{O}_{7}}\xrightarrow{\Delta }\]

B)

\[N{{H}_{4}}Cl+NaN{{O}_{2}}\xrightarrow{\Delta }\]

C)

\[N{{H}_{3}}+NaN{{O}_{2}}\xrightarrow{\Delta }\]

D)

\[{{N}_{2}}O+Cu\xrightarrow{\Delta }\]

View Answer
55) In the following reaction, \[{{C}_{2}}{{H}_{5}}OH+C{{H}_{3}}COOH\xrightarrow[-{{H}_{2}}O]{Conc.{{H}_{2}}S{{O}_{4}}}\] \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\] \[{{C}_{2}}{{H}_{5}}OH\]acts as

A)

electrophile

B)

nucleophile

C)

dehydrating agent

D)

All of the above

View Answer
56) Which of the following orbital diagram violates Faults exclusion principle?

A)

B)

C)

D)

View Answer
57) The geometry of sulphate ion is

A)

square planar

B)

tetrahedral

C)

square pyramidal

D)

octahedral

View Answer
58) The difference between heat capacity at constant pressure and heat capacity at constant volume for the combustion of carbon monoxide at \[27{{\,}^{o}}C\] will be

A)

\[~-\text{ }124.71\text{ kJ}\]

B)

\[-\text{ }1.247\text{ J}\]

C)

\[~-\text{ }1.247\text{ kJ}\]

D)

\[-\text{ }124.71\text{ J}\]

View Answer
59) IUPAC name of the given compound is \[{{H}_{3}}C-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=\overset{H}{\mathop{\overset{|}{\mathop{C}}\,}}\,-COOH\]

A)

2-methylbut-2-enoic acid

B)

3-methylbut-2-enoic acid

C)

3-methylbut-3-enoic acid

D)

2-methylbut-3-enoic acid

View Answer
60) Which of the following is an aromatic compound?

A)



B)



C)



D)

View Answer
61) Thermodynamically, most stable form of phosphorus is

A)

red

B)

black

C)

white

D)

yellow

View Answer
62) The substance with the highest calorific value is

A)

milk

B)

rice

C)

ghee

D)

egg

View Answer
63) Gamma rays are

A)

high energy electrons

B)

low energy electrons

C)

high energy electro-magnetic waves

D)

high energy positrons

View Answer
64) What volume of \[C{{O}_{2}}\] will be liberated at NTP if 12 g of carbon is burnt in excess of oxygen?

A)

11.2L

B)

22.4 L

C)

2.24 L

D)

1.12 L

View Answer
65) Which of the following is man-made element?

A)

Ra

B)

U

C)

Np

D)

C

View Answer
66) Four different colloids have the following Gold number. Which one has its most effective action?

A)

10

B)

30

C)

20

D)

40

View Answer
67) The number of unpaired electrons in ferrous ion is

A)

3

B)

2

C)

4

D)

5

View Answer
68) Ascorbic acid is the chemical name of

A)

vitamin\[{{B}_{6}}\]

B)

vitamin A

C)

vitamin C

D)

vitamin D

View Answer
69) Which amine of the following will not answer carbylamine reaction?

A)

Ethyl amine

B)

Methyl amine

C)

Dimethyl amine

D)

Phenyl amine

View Answer
70) For a reaction, the dimensions of rate constant are same as that of rate, hence order of reaction is

A)

0

B)

1

C)

2

D)

3

View Answer
71) The concentration (in mol/L) of the solution having osmotic pressure 0.0821 atm at 300 K will be

A)

0.33

B)

0.066

C)

\[0.3\times {{10}^{-2}}\]

D)

3

View Answer
72) Given, \[P{{b}^{2+}}/Pb=-0.126V;\]\[Z{{n}^{2+}}/Zn=-0.763\,\,V\] Find the emf of the following cell \[Zn|Z{{n}^{2+}}(0.1\,M)||P{{b}^{2+}}(1M)Pb.\]

A)

\[-\text{ }0.637\]

B)

+ 0.637

C)

> 0.637

D)

+ 0.889

View Answer
73) Which is the most abundant metal in the earthy crust?

A)

Fe

B)

Al

C)

Ca

D)

Na

View Answer
74) A hydrocarbon has carbon and hydrogen. Its molecular weight is 28. Its possible formula would be

A)

\[{{\text{C}}_{\text{3}}}{{\text{H}}_{\text{6}}}\]

B)

\[{{C}_{2}}{{H}_{4}}\]

C)

\[C{{H}_{4}}\]

D)

\[{{C}_{4}}{{H}_{8}}\]

View Answer
75) Which is an example of thermosetting polymer?

A)

Polythene

B)

PVC

C)

Neoprene

D)

Bakelite

View Answer
76) The first Noble Prize in chemistry was given to

A)

J.H. van' t Hoff

B)

Cannizaro

C)

Mendeleef

D)

Moseley

View Answer
77) Strongest reducing agent is

A)

K

B)

Mg

C)

Al

D)

Ba

View Answer
78) The base found only in the nucleotldes of RNA, is

A)

adenine

B)

uracil

C)

guanine

D)

cytosine

View Answer
79) Which of the following compounds does not give a precipitate with excess of NaOH?

A)

\[ZnS{{O}_{4}}\]

B)

\[FeS{{O}_{4}}\]

C)

\[AgN{{O}_{3}}\]

D)

\[HgC{{l}_{2}}\]

View Answer
80) Among the following, the correct statement is

A)

aniline is a weaker base than ammonia

B)

in water, solubility of\[C{{H}_{3}}OH>{{C}_{2}}{{H}_{5}}OH>{{C}_{6}}{{H}_{5}}OH\]

C)

b. p. of alkylhalide is greater than its corresponding alkane

D)

All of the given statements are correct

View Answer
81) Three products are obtained by the ozonolysis of penta-1, 3-diene. Out of these if two products are formaldehyde and acetaldehyde, the name of the third one is

A)

formaldehyde

B)

ethanol

C)

glyoxal

D)

propanaldehyde

View Answer
82) \[C{{H}_{2}}=CH-C{{H}_{2}}-CH=C{{H}_{2}}\] represents a/an

A)

conjugated system

B)

cumulative system

C)

isolated system

D)

All of the above

View Answer
83) In the presence of a catalyst, activation energy of a reaction is lowered by 2 kcal at \[27{{\,}^{o}}C.\] Hence, rate will be

A)

20 times

B)

28 times

C)

14 times

D)

remain the same

View Answer
84) The number of metamers of the compound with molecular formula \[{{C}_{5}}{{H}_{10}}O\]is

A)

1

B)

3

C)

8

D)

6

View Answer
85) The compound, with which ethanal does not react, is

A)

\[HCl\]

B)

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

C)

\[PC{{l}_{5}}\]

D)

\[aq\text{ }NaHS{{O}_{3}}\]

View Answer
86) The incorrect order with respect to the acidic strength is

A)

formic acid > acetic acid > propionic acid

B)

cyclohexanol < phenol < benzoic acid

C)

benzamide < aniline < cyclohexylamine

D)

\[FC{{H}_{2}}COOH>ClC{{H}_{2}}COOH>BrC{{H}_{2}}COOH\]

View Answer
87) Here, the compound X can be

A)

acetic acid

B)

formaldehyde

C)

formic acid

D)

propionic acid

View Answer
88) \[\text{HCl}\]molecule contains

A)

ionic bond

B)

covalent bond

C)

hydrogen bond

D)

coordinate bond

View Answer
89) Transition metals show paramagnetic behaviour. This is because of their

A)

high lattice energy

B)

variable oxidation state

C)

characteristic configuration

D)

unpaired electrons

View Answer
90) Which reaction is not affected by change in pressure?

A)

\[{{H}_{2}}+{{I}_{2}}\rightleftharpoons 2HI\]

B)

\[2C+{{O}_{2}}\rightleftharpoons 2CO\]

C)

\[{{N}_{2}}+3{{H}_{2}}\rightleftharpoons 2N{{H}_{3}}\]

D)

\[PC{{l}_{5}}\rightleftharpoons PC{{l}_{3}}+C{{l}_{2}}\]

View Answer
91) If the solubility of calcium fluoride in pure water is \[x\]mol/L, its solubility product is

A)

\[\sqrt{2}x\]

B)

\[2{{x}^{2}}\]

C)

\[4{{x}^{3}}\]

D)

\[{{x}^{2}}\]

View Answer
92) The molarity of a solution containing 5.0 g of \[\text{NaOH}\] in 250 mL solution is

A)

0.1

B)

0.5

C)

1.0

D)

2.0

View Answer
93) The following reaction is called Friedel-Craft's reaction. In this reaction ?X? is

A)

\[R-\underset{O}{\mathop{\underset{|\,|}{\mathop{C}}\,}}\,-Cl\]

B)

\[R-\underset{O}{\mathop{\underset{|\,|}{\mathop{C}}\,}}\,-R\]

C)

\[R-\underset{O}{\mathop{\underset{|\,|}{\mathop{C}}\,}}\,-H\]

D)

\[R-O-R\]

View Answer
94) Picric acid is

A)

2, 4, 6-tribromophenol

B)

2, 4, 6-trinitrotoluene

C)

2, 4, 6-trinitrophenol

D)

None of the above

View Answer
95) Gravity separation process is used for the concentration of

A)

calamine

B)

haematite

C)

chalcopyrite

D)

bauxite

View Answer
96) Ammonium ion is

A)

a conjugate acid.

B)

a conjugate base

C)

neither an acid nor a base

D)

both an acid and a base

View Answer
97) The equivalent weight of \[\text{MnS}{{\text{O}}_{\text{4}}}\]is half of its molecular weight when it is converted to

A)

\[\text{M}{{\text{n}}_{\text{2}}}{{\text{O}}_{\text{3}}}\]

B)

\[\text{Mn}{{\text{O}}_{\text{2}}}\]

C)

\[\text{MnO}_{4}^{-}\]

D)

\[MnO_{4}^{2-}\]

View Answer
98) The reaction by which benzaldehyde is converted in benzyl alcohol, is

A)

Fittig reaction

B)

Cannizaro reaction

C)

Wurtz reaction

D)

aldol condensation

View Answer
99) By the ideal gas law, the pressure of 0.60 mole \[\text{N}{{\text{H}}_{\text{3}}}\]gas in a 3.00 L vessel at \[25{{\,}^{o}}C\] is

A)

48.9 atm

B)

4.89 atm

C)

0.489 arm

D)

489 atm

View Answer
100) Brown ring in the test of nitrate ion is btained due to the formation of

A)

\[[Fe{{({{H}_{2}}O)}_{5}}NO]S{{O}_{4}}\]

B)

\[[Fe{{(S{{O}_{4}})}_{2}}NO]{{H}_{2}}O\]

C)

\[F{{e}_{2}}{{(S{{O}_{4}})}_{3}}.NO\]

D)

None of the above

View Answer
101) Energy flow in an ecosystem is

A)

unidirectional

B)

bidirectional

C)

multi-directional

D)

All of the above

View Answer
102) Who proposed a five-kingdom classification and named kingdoms as Monera, Protista, Fungi, Plantae and Animalia?

A)

Herbert Copeland

B)

R H Whittaker

C)

Carl Woese

D)

Carolus Linnaeus

View Answer
103) Which of the following organisms completely lack cell wall, they are the smallest living cells known and can survive without oxygen?

A)

Mycoplasma

B)

Euglenoids

C)

Slime moulds

D)

All of these

View Answer
104) What is the correct order of the stages of cellular respiration?

A)

Krebs cycleelectron - transport - chain glycolysis

B)

Electron - Krebs cycle - glycolysis transport chain

C)

Glycolysis - Krebs cycle - electron transportchain

D)

Glycolysis - electron - Krebs cycle transportchain

View Answer
105) Who discovered an infectious agent that was to be a free RNA of low molecular weight, it also lacked protein coat. This agent caused potato spindle tuber disease?

A)

M W Beijerinck

B)

T O Diener

C)

J Ivanowsky

D)

W M Stanley

View Answer
106) Bioluminescence is well marked in

A)

flatworms

B)

ctenophores

C)

cnidaria

D)

aschelminthes

View Answer
107) Small disc-shaped structures at the surface of the centromeres that appear during metaphase are

A)

kinetochores

B)

metaphase plate

C)

spindlefibres

D)

chromatid

View Answer
108) In some organisms, karyokinesis is not followed by cytokinesis as a result of which, multinucleate condition arises leading to the formation of syncytium. The perfect example for this is

A)

appearance of a furrow in cell membrane

B)

liquid endosperm in coconut

C)

sexual reproduction

D)

fertilization

View Answer
109) When a molecule moves across a membrane independent of other molecules, the process is called

A)

uniport

B)

symport

C)

antiport

D)

facilitated diffusion

View Answer
110) Golden rice was created by transforming rice with two beta-carotene biosynthesis genes, namely,

A)

\[\text{Psy}\]and \[\text{Crt 1}\]genes

B)

\[\text{LCY}-\text{e}\]

C)

\[\text{CHY}-\text{1}\]

D)

\[\text{CHY}-2\]

View Answer
111) A scientist added a chemical (cyanide) to an animal cell to stop aerobic respiration. Which of the following is most likely to have been affected by this treatment?

A)

Active transport of substances across the plasma membrane

B)

Passive transport of substances across the plasma membrane

C)

Diffusion of substances across the plasma membrane

D)

The thickness of the plasma membrane

View Answer
112) Mobilization of stored food in germinating seed is triggered by

A)

ABA

B)

GA

C)

cytokinin

D)

ethylene

View Answer
113) In the cell mediated immuno response, T-lymphocytes divide and secrete

A)

antigens

B)

plasmogens

C)

collagens

D)

cytokines

View Answer
114) Which of the following elements is an activator for both ribulosebiphosphate carboxylase oxygenase and phosphoenol pyruvate carboxylase in photosynthetic carbon fixation?

A)

\[M{{g}^{2+}}\]

B)

\[Z{{n}^{2+}}\]

C)

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

D)

\[S{{O}_{4}}^{2-}\]

View Answer
115) The inward movement of ions into the cells is ......and the outward movement is......

A)

influx; efflux

B)

efflux; influx

C)

absorption; adsorption

D)

adsorption; absorption

View Answer
116) Which of the PGR6 induces pathenocarpy in tomatoes?

A)

Auxin

B)

Gibberellin

C)

Cytokinin

D)

Ethylene

View Answer
117) Complete the equation : \[\text{Nucleic acids}\xrightarrow[{}]{\text{Nucleases}}\text{Nucleotides }\xrightarrow[{}]{{}}......\]

A)

Monoglycerides

B)

Diglycerides

C)

Disaccharides

D)

Nucleosides

View Answer
118) Which of the following is an organic molecule needed by the body in small amounts?

A)

Protein

B)

Zinc

C)

Vitamin-C

D)

Monosaccharide

View Answer
119) Which of the following rule states that animals of colder areas have shorter tails as compared to animals of warmer areas?

A)

Allen's rule

B)

Rensch's rule

C)

Jordan's rule

D)

Bergman's rule

View Answer
120) Secretin and cholecystokinin are digestive hormones. They are secreted in

A)

oesophagus

B)

ileum

C)

duodenum

D)

pyloric

View Answer
121) G-6-P dehydrogenase deficiency is associated with haemolysis of

A)

lymphocytes

B)

RBCs

C)

platelets

D)

leucocytes

View Answer
122) Biodiversity Act of India was passed by the Parliament in the year

A)

1996

B)

1992

C)

2002

D)

2000

View Answer
123) Chlorophyll in chloroplasts is located in

A)

grana

B)

pyrenoid

C)

stroma

D)

Both (a) and (c)

View Answer
124) The post Bhopal gas disaster analysis showed that the accident started, when the leakage of a tank started containing

A)

methylisocyanide

B)

methylisocyanate

C)

ethylisocyanide

D)

ethylisocyanate

View Answer
125) Which of the following herbicides and defoliant were used by the US military in its herbicidal warfare programme during the Vietnam war ?

A)

Agent black

B)

Agent orange

C)

Super orange

D)

Both (b) and (c)

View Answer
126) Some individuals with blood group A may inherit the genes for blond hair, while other individuals with blood group A may inherit the gene for brown hair. This can be best explained by the principle of

A)

dominance

B)

multiple alleles

C)

independent assortment

D)

incomplete dominance

View Answer
127) Which one of the following is correctly matched?

A)

National Institute of Virology?Pune

B)

National institute of Communicable Diseases?Lucknow

C)

Central Drug Research Institute?Kasauli

D)

National Institute of Nutrition?Mumbai

View Answer
128) Which of the following abnormalities results from an unnatural presence of a Barr body that it would normally not have?

A)

Turner's syndrome

B)

Down's syndrome

C)

Klinefelter's syndrome

D)

All of the above

View Answer
129) If a single plant species is removed from a food web, then most likely

A)

an animal species will fill the unoccupied niche

B)

other plants will produce enough food for herbivores

C)

dependent herbivores will have to find new food sources

D)

carnivores will be unaffected by the loss

View Answer
130) A vaccine meant for protection against tuberculosis is

A)

BCG

B)

DPT

C)

TT

D)

BGC

View Answer
131) The patient of this disease exhibit memory loss (particularly for recent events), shortened attention span, disorientation and eventual language loss.

A)

Cancer

B)

AIDS

C)

Alzheimer's disease

D)

Cystic fibrosis

View Answer
132) This tumour normally confined to their original location and do not spread to other parts of the body.

A)

Malignant tumour

B)

Metastasis

C)

Benign tumour

D)

Cancer

View Answer
133) Certain bacteria living in the soil poor in oxygen, convert nitrates into nitrites and then to free nitrogen and such bacteria are termed as

A)

nitrogen fixing bacteria

B)

denitrifying bacteria

C)

ammonifying bacteria

D)

saprophytic bacteria

View Answer
134) Which of the following respiratory organs are present in spiders and scorpions?

A)

Book lungs

B)

Gills

C)

Gill books

D)

Lungs

View Answer
135) Who discovered that restriction enzymes have the capability of cutting DNA strands in a particular fashion, which left what has became known as ?sticky ends? on the strands ?

A)

Ramdeo Mishra

B)

Stanley Cohen

C)

Herbert Boyer

D)

James D Watson

View Answer
136) Formation of non functional methaemoglobin causes blue-baby syndrome. This is due to

A)

excess of arsenic concentration in drinking water

B)

excess of nitrates in drinking water

C)

deficiency of iron in food

D)

increased methane content in the atmosphere

View Answer
137) In maize, hybrid vigour is exploited by

A)

bombarding the seeds with DNA

B)

crossing of two inbred parental lines

C)

harvesting seeds from the most productive plants

D)

inducing mutations

View Answer
138) Hargobind Khorana also contributed to genetic engineering by synthesizing

A)

\[{{\text{p}}^{\text{BR322}}}\]

B)

viroid

C)

\[{{\text{p}}^{\text{BR42}}}\]

D)

artificial gene

View Answer
139) Which of the following is exotic species?

A)

Parthenium

B)

Lantana

C)

Eichhornia

D)

All of these

View Answer
140) The total number of biodiversity hot spots in the world are

A)

24

B)

12

C)

34

D)

52

View Answer
141) A bond formed between carboxyl group of one amino acid and amino group of adjacent amino acid is called

A)

peptide bond

B)

hydrogen bond

C)

covalent bond

D)

All of these

View Answer
142) When the body is rapidly oxidising fats, excess ketone bodies accumulate resulting in

A)

pyruvic acid

B)

lactic acid

C)

ketoacidosis

D)

ATP

View Answer
143) EERI is situated in

A)

Delhi

B)

Mumbai

C)

Nagpur

D)

Bangaluru

View Answer
144) A historic convention on biological diversity held in Rio de Janeiro in 1992 is known as

A)

The earth summit

B)

Montreal protocol

C)

Janeva convention

D)

Janeiro convention

View Answer
145) The flowers of Oxalis open during the day and close at night, such type of movement is

A)

photonasty

B)

nyctinasty

C)

photonastic

D)

seismonastic

View Answer
146) Silent valley is tropical evergreen forest located in

A)

Kerala

B)

Karnataka

C)

Maharashtra

D)

Orissa

View Answer
147) The results of Miller?s experiments were discussed in the book The Planets? written by

A)

Sayere

B)

Harold Urey

C)

Huxley

D)

Stanley

View Answer
148) Vitamin-C was the first vitamin to be produced by a fermentation process using

A)

Penicillium

B)

E. coli

C)

Yersinia pestis

D)

Acetobacter

View Answer
149) The functional unit of DNA molecule that codes for a particular gene product is

A)

cistron

B)

exon

C)

intron

D)

gene

View Answer
150) A gene that masks another gene?s expression is called

A)

dominant

B)

recessive

C)

epistatic

D)

assorted

View Answer
151) The largest public sector bank in India is

A)

State Bank of India

B)

Allahabad Bank

C)

Punjab National Bank

D)

Indian Overseas bank

View Answer
152) National Development Council was set up in

A)

1950

B)

1951

C)

1952

D)

1953

View Answer
153) One rupee currency note bears the signature of

A)

Prime Minister of India

B)

President of India

C)

Finance Minister of India

D)

Finance Secretary of India

View Answer
154) The first estimate of national income in India was made by

A)

Mahalonobis

B)

V.K.R.V. Rao

C)

Dada BhaiNaoroji

D)

None of the above

View Answer
155) Who holds the power of Judicial review in India?

A)

The Parliament

B)

The Minister of low

C)

The Supreme Court and the High Court

D)

Only Supreme Court

View Answer
156) Who was the first Chairman of the Planning Commission?

A)

Gulzari Lai Nanda

B)

J.L. Nehru

C)

C.D. Deshmukh

D)

K.C. Niyogy

View Answer
157) Who presided as the temporary President of Constituent Assembly ?

A)

SacchidanandSinha

B)

Dr. Rajendra Prasad

C)

  Dr. B.R. Ambedkar

D)

None of the above

View Answer
158) What is the special constitutional position of Jammu & Kashmir?

A)

Indian laws are not applicable.

B)

It has its own constitution.

C)

It is not one of the integral parts of Indian union.

D)

It is above the constitution

View Answer
159) The 44th Amendment of the Indian Constitution withdrew the Fundamental Right

A)

to freedom of religion

B)

to constitutional remedies

C)

to property

D)

against exploitation

View Answer
160) In modern periodic table, 6th period contains

A)

32 elements

B)

18 elements

C)

30 elements

D)

8 elements

View Answer
161) What happens when steam is passed over red hot carbon?

A)

                                                                  \[\text{C}{{\text{O}}_{\text{2}}}+{{\text{H}}_{\text{2}}}\] are formed

B)

                                                                                      \[{{\text{H}}_{\text{2}}}+0\text{2}+\] steam are formed

C)

                                                                                       \[\text{CO}+{{\text{H}}_{\text{2}}}\] are formed

D)

None of the above

View Answer
162) Soda water contains

A)

nitrous acid

B)

acetic acid

C)

carbon dioxide

D)

sulphuric acid

View Answer
163) Lead pencil contains

A)

leadsulphate

B)

lead

C)

ferroussulphate

D)

graphite

View Answer
164) Which of the following has density greater than water?

A)

Li

B)

Na

C)

K

D)

Cs

View Answer
165) Glucagon is produced by

A)

peptic cells

B)

oxyntic cells

C)

alpha cells

D)

beta cells

View Answer
166) Inflorescence is

A)

group of flowers

B)

occurrence of flowers

C)

arrangement of flowers

D)

arrangement of flowers on the floral axis

View Answer
167) In which one of the following mammals do the ducts of the excretory system and genital tract have a common opening?

A)

Porcupine

B)

Pangolin

C)

Hedgehog

D)

Echidna

View Answer
168) Stem cutting are commonly used for the propagation of

A)

banana

B)

rose

C)

mango

D)

cotton

View Answer
169) Eating of raw fish can cause deficiency of vitamin

A)

D

B)

                                                                                                  \[{{\text{B}}_{\text{1}}}\]

C)

                                                                                                         \[{{\text{B}}_{4}}\]

D)

                                                                                                        \[{{\text{B}}_{12}}\]

View Answer
170) Gandhiji was associated with the Peasant Movement of

A)

Bardoli

B)

Champaran

C)

Kheda

D)

Both and

View Answer
171) The Supreme Court in British India was established under

A)

The Charter Act of 1813

B)

The Charter Act of 1833

C)

Regulating Act of 1773

D)

Pitt?s India Act of 1784

View Answer
172) The total number of Purans are

A)

10

B)

12

C)

16

D)

18

View Answer
173) The biggest building at Mohenjodaro was the

A)

great granary

B)

rectangular building

C)

great bath

D)

assembly hall

View Answer
174) The earliest example of a land grant is provided by an inscription of

A)

the Mauryas

B)

the Satvahans

C)

the Guptas

D)

the Chalukyas

View Answer
175) Rabindranath Tagore returned the title of Knighthood to the British Government to protest against the

A)

Rowlatt Act of 1919

B)

introduction of Diarchy in the provinces

C)

partition of Bengal

D)

massacre in JallianwallaBagh

View Answer
176) Who was the first person to land on the moon?

A)

Neil Armstrong and Edwin Aldrin

B)

Neelam Sanjeev Reddy and Einstein

C)

Stephen Hawkins and Kingsley

D)

None of the above

View Answer
177) The largest of Indian peninsular river is

A)

Ganga

B)

Krishna

C)

Godavari

D)

None of these

View Answer
178) The first person to conduct heart trans planation in India is

A)

Dr. P.K.K. Ayyangar

B)

b) Dr. R. Valiathan

C)

Dr. Vanugopal

D)

Dr. R. Keshavan Nair

View Answer
179) Which Indian became the President of International Court of Justice?

A)

Justice H.R. Khanna

B)

Justice Ajit Ray

C)

Dr. Nagendra Singh

D)

Justice P.N. Bhagwati

View Answer
180)  ?Golan Heights? has become a controversial issue between which of the following pairs of nations?

A)

Iraq-Iran

B)

Israel-Libya

C)

Israel-Syria

D)

Kuwait-Iraq

View Answer
181) If? nitcoscotingo? means ?softer than flower? ; ?tingorhomst? means ?sweet flower fragrance? and ?mstscotmp? means ?sweet than smile?, what wuld ?fragrance? stand for ?

A)

rho

B)

tmp

C)

sco

D)

mst

View Answer
182) If                                                                                              \[x=\sqrt[3]{2\frac{93}{125}},\] then the value of x is

A)

                                                                                                             \[2\frac{1}{5}\]

B)

                                                                                                             \[1\frac{2}{5}\]

C)

                                                                                                             \[3\frac{1}{5}\]

D)

                                                                                                             \[4\frac{1}{5}\]

View Answer
183) The subduplicate ratio of                                                                                                  \[16{{x}^{4}}:625{{y}^{6}}\] is

A)

                                                          \[\text{4}{{\text{x}}^{\text{2}}}:\text{25}{{\text{y}}^{\text{3}}}\]

B)

                                                         \[~\text{4}{{\text{x}}^{\text{2}}}\text{:25}{{\text{y}}^{\text{2}}}\]

C)

                                                                                                     \[\text{4x}:\text{25y}\]

D)

                                                         \[\text{8}{{\text{x}}^{\text{2}}}:\text{125}{{\text{y}}^{\text{3}}}\]

View Answer
184) How many meters of cloth 50 m wide will be required to make a conical tent, the radius of whose base is 7 m and whose height is 24 m ?

A)

9 m

B)

11m

C)

12 m

D)

13m

View Answer
185) In a ratio which is equal to 7 : 8, if the antecedent is 35, the consequent is :

A)

30

B)

32

C)

36

D)

40

View Answer
186) Six persons are playing a game sitting in a circle facing the centre, Vijay was to the left of Sudhir. Amar was between Rakesh and Sarv. Neerav was second to the left of Amar. Which of the following is the position of Amar from Neerav?

A)

Second from right

B)

Second to the left

C)

Third from the left

D)

Third from right

View Answer
187) If ?nsoptrklichn? stands for ?Sapna gets marriage gift?, ?ptrInm wop chn? stands for ?wife gives marriage gift?, ?tti wop nhi? stands for ?he gives nothing?, what would means ?gives? ?

A)

wop

B)

ptr

C)

nhi

D)

chn

View Answer
188) Who is the tallest?

A)

Sunita

B)

Bina

C)

Gauri

D)

Data inadequate

View Answer
189) Who is the shortest?

A)

Radha

B)

Renu

C)

Seema

D)

Data inadequate

View Answer
190) What is the position of Radha from the shorter end?

A)

Fourth

B)

Second

C)

Third

D)

Data inadequate

View Answer
191) The most important use of fire for primitive man was

A)

to provide warmth

B)

to provide light

C)

to cook food

D)

Both and

View Answer
192) Primitive man used the fire-brand to

A)

keep away the wild animals

B)

lessen the labour

C)

provide light

D)

prevent accidents

View Answer
193) In the passage primary means

A)

primitive

B)

elemental

C)

fundamental

D)

essential

View Answer
194) Lamps, too, probably developed by accident. This statement shows that lamps developed through

A)

an accident

B)

chance

C)

planning

D)

fate

View Answer
195) Which of the following may be best title for the passage?

A)

Discovery of fire

B)

Uses of fire

C)

Primitive man and fire

D)

Lamps

View Answer
196) Select the appropriate world which is nearest in meaning to the word given in capitals. CONFIDENTIAL

A)

Secret

B)

Private

C)

Trusted

D)

Hidden

View Answer
197) Select the appropriate world which is nearest in meaning to the word given in capitals. MANY

A)

Endless

B)

Several

C)

Unlimited

D)

Numberless

View Answer
198) Select the appropriate world which is nearest in meaning to the word given in capitals. NIMBLE

A)

Lively

B)

Clear

C)

Quickening

D)

Subtle

View Answer
199) Select the appropriate world which is nearest in meaning to the word given in capitals. SANE

A)

Wild

B)

Rational

C)

Arrogant

D)

Obscure

View Answer
200) Select the appropriate world which is nearest in meaning to the word given in capitals. FATIGUE

A)

Sweating

B)

Tension

C)

Drowsiness

D)

Weariness

View Answer

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