Solved papers for VMMC VMMC Medical Solved Paper-2004

VMMC Medical Solved Paper-2004 Total Questions - 200

1) Mass equivalent to energy 931 MeV is

A)

\[6.02\times {{10}^{-27}}\,kg\]

B)

\[1.66\times {{10}^{-27}}kg\]

C)

\[16.66\,\times {{10}^{-27}}\,kg\]

D)

\[6.02\,\times {{10}^{-27}}\,kg\]

View Answer
2) Plutonium-decays with a half-life of 24000 years. If plutonium is stored for 72000 years, then the fraction of plutonium that remains, is

A)

\[\frac{1}{8}\]

B)

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

C)

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

D)

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

View Answer
3) If light travels a distance x in \[{{t}_{1}}\,\sec \] in air and 10 x distance in \[{{t}_{2}}\,\sec \] in a medium, the critical angle of the medium will be

A)

\[{{\tan }^{-1}}\left( \frac{{{t}_{1}}}{{{t}_{2}}} \right)\]

B)

                       \[{{\sin }^{-1}}\left( \frac{{{t}_{1}}}{{{t}_{2}}} \right)\]

C)

       \[{{\sin }^{-1}}\left( \frac{10{{t}_{1}}}{{{t}_{2}}} \right)\]

D)

       \[{{\tan }^{-1}}\left( \frac{10{{t}_{1}}}{{{t}_{2}}} \right)\]

View Answer
4) In an electromagnetic wave, the electric and magnetic fields are 100 V/m and 0.265 A/m. The maximum energy flow will be

A)

\[79\,W/{{m}^{2}}\]

B)

                       \[13.2\,W/{{m}^{2}}\]

C)

           \[53.0\,\,W/{{m}^{2}}\]

D)

       \[26.5\,\,W/{{m}^{2}}\]

View Answer
5) If a current of 10 A flows in one second through a coil and the induced emf is 10V, then the self-inductance of the coil will be

A)

1 H

B)

                       2 H

C)

4 H

D)

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

View Answer
6) The frequency of an alternating voltage is 50 cycles/sec and its amplitude is120 V. Then its rms value will be

A)

84.9 V

B)

                       42.4 V

C)

56.5 V

D)

       75.5 V

View Answer
7) Two waves of wavelength 50 cm and 51cm produce 12 beats per sec. The velocity of sound will be

A)

340 m/s

B)

                       332 m/s

C)

                       153 m/s

D)

       306 m/s

View Answer
8) The wavelength of radiation emitted is\[{{\lambda }_{0}}\] when an electron in hydrogen atom jumps from 3rd to 2nd orbit. If in the hydrogen atom itself, the electron jumps from fourth orbit to second orbit, then wavelength of emtted radiation will be

A)

\[\frac{25}{16}{{\lambda }_{0}}\]

B)

\[\frac{27}{20}{{\lambda }_{0}}\]

C)

\[\frac{20}{27}{{\lambda }_{0}}\]

D)

       \[\frac{16}{25}{{\lambda }_{0}}\]

View Answer
9) A thin circular ring of mass M and radius r is rotating about its axis with a constant angular velocity\[\omega \]. If two objects of mass m are attached gently to opposite ends of a diameter of ring, ring will now rotate with an angular velocity given by

A)

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

B)

       \[\frac{(M-2m)}{M}\]

C)

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

D)

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

View Answer
10) A bomber plane moves horizontally with a speed of 500 m/s and a bomb released from it, strikes the ground in 10 sec. Angle at which it strikes the ground will be \[(g=10\,m/{{s}^{2}})\]

A)

\[{{\tan }^{-1}}\left( \frac{1}{5} \right)\]

B)

       \[\tan \left( \frac{1}{5} \right)\]

C)

       \[{{\tan }^{-1}}(1)\]

D)

       \[{{\tan }^{-1}}(5)\]

View Answer
11) Black hole is

A)

super surface of atmosphere

B)

ozone layer

C)

super dense planetary material

D)

none of these

View Answer
12) The dual nature of light is exhibited by

A)

diffraction and photoelectric effect

B)

photoelectric effect

C)

refraction and interference

D)

diffraction and reflection

View Answer
13) The number of lenses in terrestrial telescope will be

A)

6

B)

4

C)

       3

D)

       2

View Answer
14) The direction of null points are on the equatorial line of a bar magnet, when the north pole of the magnet is pointing

A)

west

B)

east

C)

south

D)

       north

View Answer
15) If the distance between the plates of parallel plate capacitor is halved and the dielectric constant is doubled, then its capacity will

A)

increase by 16 times

B)

increase by 4 times

C)

increase by 2 times

D)

remain the same

View Answer
16) A particle of mass m and charge q is placed at rest in a uniform electric field E and then released, the kinetic energy attained by the particle after moving a distance y, will be

A)

\[{{q}^{2}}Ey\]

B)

\[qEy\]

C)

       \[q{{E}^{2}}y\]

D)

       \[qE{{y}^{2}}\]

View Answer
17) Time period of a simple pendulum will be double, if we

A)

decrease the length 2 times

B)

decrease the length 4 times

C)

increase the length 2 times

D)

increase the length 4 times

View Answer
18) Two gases A and B having same pressure P, volume V and temperature T are mixed. If mixture has volume and temperature as V and T respectively, then the pressure of the mixture will be

A)

4 P

B)

3 P

C)

2 P

D)

       P

View Answer
19) The maximum velocity and maximum acceleration of body moving in a simple harmonic motion are 2 m/s and \[4\,m/{{s}^{2}}\] respectively. Then the angular velocity will be

A)

4 rad/sec

B)

       3 rad/sec

C)

       2 rad /sec

D)

       8 rad/sec

View Answer
20) The velocity v acquired by an electron starting from rest and moving through potential difference V is shown by which of the following the graphs ?

A)

B)

C)

D)

View Answer
21) The major carriers of current in a p-type semi-conductor will be

A)

neutrons

B)

protons

C)

       electrons

D)

       holes

View Answer
22) The longest wavelength in Balmer series of hydrogen spectrum will be

A)

\[6557\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

B)

       \[1216\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

C)

       \[4800\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

D)

       \[5600\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

View Answer
23) Myopia is corrected by

A)

cylindrical lens

B)

bifocal lens

C)

       convex lens

D)

       concave lens

View Answer
24) A moving coil produces an induced emf, this is in accordance with

A)

Amperes law

B)

       Coulomb law

C)

       Faradays law

D)

       Lenzs law

View Answer
25) If a steady current of 4 amp maintained for 40 minutes, deposits 4.5 g of zinc at the cathode, then the chemical equivalent will be

A)

\[51\times {{10}^{-17}}g/C\]

B)

\[28\times {{10}^{-6}}g/C\]

C)

       \[32\times {{10}^{-5}}g/C\]

D)

       \[47\times {{10}^{-5}}g/C\]

View Answer
26) Two parallel wires of length 9 m each are separated by a distance 0.15 m. If they carry equal currents in the same direction and exerts a total force of \[30\times {{10}^{-7}}N\] on each other, then the value of current must be

A)

2.5 amp

B)

3.5 amp

C)

       1.5 amp

D)

       0.5 amp

View Answer
27) The frequency of tuning fork is 256 Hz. It will not resonate with a fork of frequency

A)

768 Hz

B)

738 Hz

C)

       512 Hz

D)

       256 Hz

View Answer
28) Antimony and bismuth are usually used in a thermocouple, because

A)

negative thermal emf is produced

B)

constant thermal emf is produced

C)

lower thermal emf is produced

D)

higher thermal emf is produced

View Answer
29) A person sitting in an open car moving at constant velocity throws a ball vertically into air, the ball falls

A)

exactly in the hand of thrower

B)

outside the car

C)

in the car ahead the person

D)

in the car behind the person

View Answer
30) The force on a rocket moving with a velocity of 300 m/s is 210 N. Then the rate of combustion of the fuel will be

A)

3.5 kg/sec

B)

2.1 kg/sec

C)

       1.4 kg/sec

D)

       0.7 kg/sec

View Answer
31) Ina p-type semi-conductor, germanium is dopped with

A)

gallium

B)

boron

C)

aluminum

D)

       all of these

View Answer
32) The stopping potential, when a metal with work function 0.6 eV is illuminated with light of energy 2 eV will be

A)

1.4 V

B)

2.8 eV

C)

4.2 eV

D)

       0.7 V

View Answer
33) Magnetic permeability is maximum for

A)

ferromagnetic substances

B)

diamagnetic substances

C)

paramagnetic substances

D)

all of these

View Answer
34) The equivalent resistance between P and Q in given figure, will be:

A)

50\[\Omega \]

B)

40\[\Omega \]

C)

20 \[\Omega \]

D)

       10\[\Omega \]

View Answer
35) The current in the given circuit will be

A)

0.4 A

B)

0.3 A

C)

0. 2 A

D)

       0.1 A

View Answer
36) Two charged spheres separated by a distance d exert some force F on each other. If they are immersed in a liquid of dielectric constant 2, then the force exerted by them, if all other conditions are same, is

A)

4 F

B)

2 F

C)

F

D)

       F/2

View Answer
37) Two springs of spring constants \[{{k}_{1}}\] and \[{{k}_{2}}\] have equal maximum velocities. When executing simple harmonic motion, the ratio of their amplitudes (masses are equal) will be

A)

\[{{\left( \frac{{{k}_{2}}}{{{k}_{1}}} \right)}^{{1}/{2}\;}}\]

B)

       \[{{\left( \frac{{{k}_{1}}}{{{k}_{2}}} \right)}^{{1}/{2}\;}}\]

C)

       \[\frac{{{k}_{2}}}{{{k}_{1}}}\]

D)

       \[{{k}_{1}}{{k}_{2}}\]

View Answer
38) Colour appears on a thin film of soap and on soap bubble due to:

A)

diffraction

B)

interference

C)

dispersion

D)

       refraction

View Answer
39) If the earth loses its gravity, then for a body:

A)

weight becomes zero, but not the mass

B)

mass becomes zero but not weight

C)

neither mass nor weight is zero

D)

both mass and weight are zero

View Answer
40) The critical angle of a medium with respect to air is \[{{45}^{\text{o}}}\]. The refractive index of medium is

A)

1.41

B)

1.2

C)

       1.5

D)

       2

View Answer
41) When an electron is emitted from a nucleus, then effect on its neutron- proton ratio will

A)

remain same

B)

increase

C)

       decrease

D)

       either (a) or (b)

View Answer
42) The spectrum obtained from a sodium vapour lamp is an example of

A)

absorption spectrum

B)

emission spectrum

C)

continuous spectrum

D)

band spectrum

View Answer
43) Electromagnetic waves travel in a medium which has relative permeability 1.3 and relative permittivity 2.14. Then the speed of the electromagnetic wave in the medium will be

A)

\[13.6\,\times {{10}^{6}}\,m/s\]

B)

\[1.8\times {{10}^{2}}\,m/s\]

C)

\[3.6\,\times {{10}^{8}}\,m/s\]

D)

\[1.8\times {{10}^{8}}\,m/s\]

View Answer
44) A wire of length 0.5 m and carrying the current of 1.2 amp is placed in a uniform magnetic field of induction 2 tesla. If the magnetic field is perpendicular to the length of the wire, then the force on the wire will be

A)

1.2 N

B)

       4.8 N

C)

2.4 N

D)

       1.8 N

View Answer
45) The resistors of resistances 2\[\Omega \], 4\[\Omega \] 5\[\Omega \] are connected in parallel. The total resistance of the combination will be:

A)

\[\frac{20}{19}\Omega \]

B)

\[\frac{19}{20}\Omega \]

C)

\[\frac{10}{20}\Omega \]

D)

       \[\frac{29}{10}\Omega \]

View Answer
46) Assertion: A larger dry cell has higher emf. Reason: The emf of a dry cell is proportional to its size.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
47) Assertion: A red object appears dark in the yellow light. Reason: The red colour is scattered less.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
48) Assertion: In a pressure cooker the water is brought to boil. The cooker is then removed from the stove. Now on removing the lid of the pressure cooker, the water starts boiling again. Reason: The impurities in water bring down its boiling point.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
49) Assertion: The true geographic north direction is found by using a compass needle. Reason: The magnetic meridian of the earth is along the axis of rotation of the earth.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
50) Assertion: There are very small sporadic changes in the speed of rotation of the earth. Reason: Shifting of large air masses in the earths atmosphere produce a change in the moment of inertia of the earth causing its speed of rotation to change.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
51) Fats, on alkaline hydrolysis, gives

A)

oils

B)

soaps

C)

detergents

D)

glycol + acid

View Answer
52) The rate of diffusion of hydrogen gas is

A)

1.4 times to He gas

B)

same as He gas

C)

5 times to He gas

D)

2 times to He gas

View Answer
53) If 0.15 g of a solute, dissolved is 15 g of solvent, is boiled at a temperature higher by \[0.216{{\,}^{\text{o}}}C,\] than that of the pure solvent. The molecular weight of the substances (molal elevation constant for the solvent is \[2.16{}^\circ C\]) is:

A)

100

B)

                                       10.1

C)

10

D)

       1.001

View Answer
54) Which of the following is a three dimensional silicate?

A)

Mica

B)

                       Spodumene

C)

Zeolite

D)

       None of these

View Answer
55) Which type of bond is present in \[{{\text{H}}_{\text{2}}}\text{S}\] molecule:

A)

ionic bond

B)

covalent bond

C)

co-ordinate

D)

all of three.

View Answer
56) \[\text{MgC}{{\text{l}}_{\text{2}}}\text{6}{{\text{H}}_{\text{2}}}\text{O}\text{.}\]When heated gives:

A)

magnesium oxide

B)

magnesium oxychloride

C)

magnesium dichloride

D)

magnesium chloride

View Answer
57) A certain mass of gas occupies a volume of 300 c.c. at 27C and 620 mm pressure. The volume of this gas at \[\text{47}{{\,}^{\text{o}}}\text{C}\] and 640 mm pressure will be

A)

400 c.c.

B)

       510 c.c.

C)

       310 c.c.

D)

       350 c.c.

View Answer
58) Which of the following is a polar compound?

A)

\[{{C}_{2}}{{H}_{6}}\]

B)

                                       \[CC{{l}_{4}}\]

C)

       \[HCl\]

D)

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

View Answer
59) When sand is heated with hydrofluoric acid and a wet rod is brought in contact with vapours evolving, a white deposit is due to

A)

\[Si{{F}_{4}}\]

B)

                                       \[Si{{F}_{2}}\]

C)

\[{{H}_{4}}Si{{O}_{4}}\]

D)

       none of these

View Answer
60) Which of the following process is concerned with the formation of ethers?

A)

Wurtz synthesis

B)

Williamson synthesis

C)

Kolbe synthesis

D)

Hofmann synthesis

View Answer
61) Which of the following gives methane \[[C{{H}_{4}}]\]on hydrolysis?

A)

\[F{{e}_{3}}{{O}_{4}}\]

B)

       \[A{{l}_{2}}{{O}_{3}}\]

C)

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

D)

       \[A{{l}_{4}}{{C}_{3}}\]

View Answer
62) The number of isomers in \[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{10}}}\text{O}\] are:

A)

7

B)

                       8

C)

6

D)

       5

View Answer
63) In which of the following, the bond length between hybridized carbon atom and other carbon atom is minimum?

A)

Propyne

B)

                                       Propene

C)

       Butane

D)

       Propane

View Answer
64) The amount of silver deposited by passing 241.25 coulomb of current through silver nitrate solution is

A)

2.7g

B)

                       2.7mg

C)

       0.27g

D)

       0.54g

View Answer
65) The shape of \[\text{I}{{\text{F}}_{7}}\]molecule is

A)

pentagonal bipyramidal

B)

trigonal bipyramidal

C)

tetrahedral

D)

octahedral

View Answer
66) Oxidation state of iron in \[\text{F}{{\text{e}}_{\text{3}}}{{\text{O}}_{\text{4}}}\]is

A)

\[\frac{8}{3}\]

B)

                       \[\frac{3}{4}\]

C)

\[\frac{3}{2}\]

D)

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

View Answer
67) Reduction of nitrobenzene, in the presence of Zn and KOH, gives

A)

hydrazobenzene

B)

nitrobenzene

C)

       azobenzene

D)

       azoxybenzene

View Answer
68) An orbital in which \[n=4\]and \[l=2\]is expressed by

A)

\[4\,s\]

B)

       \[4\,p\]

C)

\[4d\]

D)

       \[sp\]

View Answer
69) Hydrogen peroxide is prepared in the laboratory by

A)

adding \[\text{Mn}{{\text{O}}_{\text{2}}}\]to dil \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]

B)

by passing \[\text{C}{{\text{O}}_{2}}\]into \[\text{Ba}{{\text{O}}_{\text{2}}}\]

C)

by adding \[\text{N}{{\text{a}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]to cold water

D)

by adding \[\text{Pb}{{\text{O}}_{\text{2}}}\]into \[\text{KMn}{{\text{O}}_{\text{4}}}\]

View Answer
70) The correct order of reactivity of halogens is

A)

\[F>Cl>Br>I\]

B)

\[F<Cl>Br<I\]

C)

\[F<Cl<Br<I\]

D)

\[F<Cl<Br>I\]

View Answer
71) Cyanohydrin of which of the following forms lactic acid?

A)

\[C{{H}_{3}}C{{H}_{2}}CHO\]

B)

\[C{{H}_{3}}CHO\]

C)

       \[HCHO\]

D)

       \[C{{H}_{3}}COC{{H}_{3}}\]

View Answer
72) Which of the following compound reacts with chloroform and a base to form phenyl isocyanide?

A)

Phenol

B)

                                       Aniline

C)

       Benzene

D)

       Nitro benzene

View Answer
73) If gas, at constant temperature and pressure expands then its

A)

entropy increases and then decreases

B)

internal energy increases

C)

internal energy remains the same

D)

internal energy decreases

View Answer
74) In a polar molecule, the ionic charge is \[4.8\times {{10}^{-10}}\] e. s. u. If the inter ionic distance is one \[\overset{\text{o}}{\mathop{\text{A}}}\,\]unit, then the dipole moment is

A)

41.8 debye

B)

      4.18 debye

C)

       4.8 debye

D)

       0.48 debye

View Answer
75) The e. m. f. of a galvanic cell with electrode potentials of \[Z{{n}^{2+}}/Zn=-0.76\,V.\]and that of \[C{{u}^{2+}}/Cu=+\,0.34V,\]is

A)

+ 0.34V

B)

       + 0.76V

C)

       -1.1 V

D)

       +1.1 V

View Answer
76) Identify the transition element

A)

\[1{{s}^{2}},\text{ }2{{s}^{2}}\text{ }2{{p}^{6}},\text{ }3{{s}^{2}},\text{ }3{{p}^{6}},\text{ }4{{s}^{2}}\]

B)

\[1{{s}^{2}},\text{ }2{{s}^{2}}\text{ }2{{p}^{6}},\text{ }3{{s}^{2}},\text{ }3{{p}^{6}}\text{ }3{{d}^{2}},\text{ }4{{s}^{2}}\]

C)

\[1{{s}^{2}},\text{ }2{{s}^{2}}\text{ }2{{p}^{6}},\text{ }3{{s}^{2}},\text{ }3{{p}^{6}}\text{ }3{{d}^{10}},\text{ }4{{s}^{2}}\text{ }4{{p}^{2}}\]

D)

\[1{{s}^{2}},\text{ }2{{s}^{2}}\text{ }2{{p}^{6}},\text{ }3{{s}^{2}}\text{ }3{{p}^{6}}\text{ }3{{d}^{10}},\text{ }4{{s}^{2}}\text{ }4{{p}^{1}}\]

View Answer
77) Which of the following is more soluble in ammonia?

A)

\[\text{AgCl}\]

B)

       \[\text{AgBr}\]

C)

\[\text{Agl}\]

D)

       none of these

View Answer
78) An important product in the ozone depletion by chloroflurocarbons is :

A)

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

B)

                                       \[\text{OCl}\]

C)

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

D)

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

View Answer
79) Which of the following is heavy water?

A)

\[{{H}_{2}}{{O}^{18}}\]

B)

    \[{{H}_{2}}{{O}^{16}}\]

C)

       \[{{H}_{2}}{{O}_{3}}\]

D)

       \[{{D}_{2}}O\]

View Answer
80) Propylene on hydrolysis -with sulphuric acid forms

A)

\[n-\]propyl alcohol

B)

isopropyl alcohol

C)

ethyl alcohol

D)

butyl alcohol

View Answer
81) The volume of oxygen liberated from 15ml of 20 volume \[{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]is

A)

250 ml

B)

                       300 ml

C)

       150 ml

D)

       200 ml

View Answer
82) Which of the following is purest form of iron?

A)

Steel

B)

       Wrought iron

C)

Grey cast iron

D)

       White cast iron

View Answer
83) Carborundum is

A)

\[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]

B)

\[A{{l}_{2}}{{O}_{3}}.2{{H}_{2}}O\]

C)

\[AlC{{l}_{3}}\]

D)

\[\text{SiC}\]

View Answer
84) The hydrolysis product of \[C{{H}_{3}}COC{{H}_{3}}+C{{H}_{3}}MgBr\]is

A)

\[n-\] butyl alcohol

B)

tertiary butyl alcohol

C)

secondary butyl alcohol

D)

isopropyl alcohol

View Answer
85) Molecular formula of chloropicrin is

A)

\[CHC{{l}_{3}}N{{O}_{2}}\]

B)

       \[CC{{l}_{3}}N{{O}_{3}}\]

C)

       \[CC{{l}_{2}}N{{O}_{2}}\]

D)

       \[CC{{l}_{3}}N{{O}_{2}}\]

View Answer
86) Which of the following does not give a borax bead test?

A)

Ferrous salt

B)

       Chromium

C)

Cobalt

D)

       Sodium

View Answer
87) The inert gas abundantly found in atmosphere is

A)

Ae

B)

                       Kr

C)

He

D)

       Ar.

View Answer
88) Which of the following electronic configuration is not possible?

A)

\[1{{s}^{2}},2{{s}^{2}}\]

B)

\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}}\]

C)

\[[Ar]\,3{{d}^{10}},4{{s}^{2}}4{{p}^{2}}\]

D)

\[1{{s}^{2}},2{{s}^{2}}2{{p}^{2}},3{{s}^{1}}\]

View Answer
89) Chloroform, on warming with Ag power, gives

A)

\[{{C}_{2}}{{H}_{6}}\]

B)

       \[{{C}_{2}}{{H}_{6}}\]

C)

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

D)

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

View Answer
90) The shape of a molecule of \[\text{N}{{\text{H}}_{\text{3}}}\text{,}\]in which central atoms contains lone pair of electron, is

A)

tetrahedral

B)

     planar trigonal

C)

                       square planar

D)

       pyramidal

View Answer
91) Which is correct about ionization potential?

A)

It is independent of atomic radii

B)

It increases with increase in atomic radii

C)

It remains constant with increase in atomic radii

D)

It decreases with increase in atomic radii

View Answer
92) In the reaction \[HN{{O}_{3}}+{{P}_{4}}{{O}_{10}}\xrightarrow{{}}4HP{{O}_{3}}+x\] the product \[x\] is

A)

\[{{N}_{2}}{{O}_{3}}\]

B)

\[{{N}_{2}}{{O}_{5}}\]

C)

\[N{{O}_{2}}\]

D)

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

View Answer
93) When lead nitrate is heated, it gives

A)

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

B)

\[\text{NO}\]

C)

                       \[{{\text{N}}_{\text{2}}}{{\text{O}}_{\text{5}}}\]

D)

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

View Answer
94) Equivalant weight of a bivalent metal is 37.2. The molecular weight of its chloride is

A)

412.2

B)

       216

C)

145.4

D)

       108.2

View Answer
95) Vinegar contains how much % of acetic acid?

A)

15-20%

B)

       90-100%

C)

7-8%

D)

       10-12%

View Answer
96) Assertion: \[\text{HCl}{{\text{O}}_{\text{4}}}\]is a stronger acid than\[\text{HCl}{{\text{O}}_{3}}.\] Reason: Oxidation state of \[\text{Cl}\] in \[\text{HCl}{{\text{O}}_{4}}\]is + 8 and in \[\text{HCl}{{\text{O}}_{\text{3}}}\text{+}\,\text{5}\text{.}\]

A)

If both assertion and reason are true and reason is not the correct explanation of assertion.

B)

If both assertion and reason are true but reason is not the correct explanation of assertion.

C)

If assertion is true but reason is false.

D)

If both assertion and reason are false

View Answer
97) Assertion: The free gaseous Cr atom has six unpaired electrons. Reason: Half-filled s orbital has greater stability.

A)

If both assertion and reason are true and reason is not the correct explanation of assertion.

B)

If both assertion and reason are true but reason is not the correct explanation of assertion.

C)

If assertion is true but reason is false.

D)

If both assertion and reason are false

View Answer
98) Assertion: The \[[Ni{{(en)}_{3}}C{{l}_{2}}]C{{l}_{2}}\] (en= ethylene diamine) has lower stability than \[[Ni{{(N{{H}_{3}})}_{6}}C{{l}_{2}}]\]. Reason: In \[[Ni{{(en)}_{3}}C{{l}_{2}}]\] the geometry of Ni is trigonal bipyramidal.

A)

If both assertion and reason are true and reason is not the correct explanation of assertion.

B)

If both assertion and reason are true but reason is not the correct explanation of assertion.

C)

If assertion is true but reason is false.

D)

If both assertion and reason are false

View Answer
99) Assertion: Sb (III) is not precipitated as sulphide when in its alkaline solution \[{{H}_{2}}S\] is passed. Reason: The concentration of \[{{S}^{2-}}\] ion in alkaline medium is inadequate for precipitation.

A)

If both assertion and reason are true and reason is not the correct explanation of assertion.

B)

If both assertion and reason are true but reason is not the correct explanation of assertion.

C)

If assertion is true but reason is false.

D)

If both assertion and reason are false

View Answer
100) Assertion: Nuclear binding energy per nucleon is in the order \[-_{4}^{9}Be>_{3}^{7}Li>_{2}^{4}He\]. Reason: Binding energy per nucleon increases linearly with difference in number of neutrons and protons.

A)

If both assertion and reason are true and reason is not the correct explanation of assertion.

B)

If both assertion and reason are true but reason is not the correct explanation of assertion.

C)

If assertion is true but reason is false.

D)

If both assertion and reason are false

View Answer
101) Pond is an example of which ecosystem?

A)

Natural

B)

Artificial

C)

Forest

D)

None of these

View Answer
102) The ecological niche of population is a

A)

geographical area that it covers

B)

place where it lives

C)

set of conditions and resource it uses

D)

none of these

View Answer
103) Mendels dihybrid cross ratio is

A)

1 : 2 : 1

B)

9 : 3 : 3 : 1

C)

       9 : 3 : 4

D)

1 : 1

View Answer
104) Parachute mechanism of seed dispersal occurs in

A)

sunflower

B)

Calotropis

C)

mango

D)

apple

View Answer
105) Hand of man, wing of bat and flipper of seal represents

A)

vestigeal organs

B)

analogous organs

C)

evolutionary organs

D)

homologous organs

View Answer
106) If an organism is crossed with homozygous recessive individual, it is called

A)

back cross

B)

test cross

C)

simple cross

D)

monohybrid cross

View Answer
107) Which is correct for the structure of cell wall of bacteria and fungi?

A)

Both are made up of cellulose

B)

Both have mucopeptide

C)

Both are made up of N-acetylglucosamine

D)

None of these

View Answer
108) Photorespiration takes place only in

A)

lysosomes of plant cell

B)

green parts of the plant

C)

mitochondria of plant cell

D)

none of these

View Answer
109) Nitrogen fixation means:

A)

\[{{N}_{2}}\] changes in \[NO_{3}^{-}\]

B)

\[{{N}_{2}}\] changes in \[N{{H}_{3}}\]

C)

\[NO_{2}^{-}\] changes into nitrates

D)

none of these

View Answer
110) In a pond ecosystem, benthos means

A)

primary consumers in the depth of a pond

B)

virus

C)

zooplankton on the water surface

D)

bacteria

View Answer
111) There are special proteins that help to open up DNA double helix in front of the replication fork. These protein are

A)

DNA ligase

B)

       DNA gyrase

C)

       DNA polymerase I

D)

       none of these

View Answer
112) Peripatus is known as a connecting link, because it has the characters of both

A)

Aves and Fishes

B)

Reptiles and Birds

C)

Fishes and Amphibians

D)

Arthropoda and Annelids

View Answer
113) In which segment the clitellum is present in earthworm?

A)

16 segments

B)

       17-19 segments

C)

       14-16 segments

D)

       5-6 segments

View Answer
114) Which of the following is absent in the mouth part of housefly?

A)

Labrum

B)

       Epipharynx

C)

       Mandibles

D)

       Maxillary palps

View Answer
115) The colour of the body in earthworm is brown due to

A)

porphyrin

B)

       haemoglobin

C)

       blood

D)

       haemocyanin

View Answer
116) The egg found in monotremata is

A)

microlecithal

B)

       mesolecithal

C)

       macrolecithal

D)

       none of these

View Answer
117) Which hormone causes stunted growth in pea ?

A)

Gibberellic acid

B)

       Auxin

C)

Cytokinin

D)

       Ethylene

View Answer
118) In five kingdom classification of Whittaker, eukaryotes were assigned to

A)

3 of 5 kingdoms

B)

       2 of 5 kingdoms

C)

       4 of 5 kingdoms

D)

       all the 5 kingdoms

View Answer
119) Which is responsible for recycling of material?

A)

Bacteria

B)

       Algae

C)

Fungi

D)

       Virus

View Answer
120) Which is following group of plant can grow in \[{{N}_{2}}\] deficient soil?

A)

Bryophytes

B)

       Algae

C)

Insectivorous

D)

       Pteridophytes

View Answer
121) Which region is responsible for origin of rhizoids in Funaria?

A)

Lateral region

B)

       Dorsal region

C)

Ventral region

D)

       Basal region

View Answer
122) Powdery mildews of crops are caused by

A)

basidiomycetes

B)

       phycomycetes

C)

       ascomycetes

D)

       eumycocetes

View Answer
123) The codons, causing chain termination are

A)

AGT, TAG, UGA

B)

      UAG, UGA, UAA

C)

       TAG, TAA, TGA

D)

       GAT, AAT, AGT

View Answer
124) Biological concept of species is mainly based on

A)

methods of reproduction only

B)

reproductive isolation

C)

morphological features only

D)

none of these

View Answer
125) The organism which carries a disease from one organism to another is called?

A)

Parasite

B)

      Host

C)

Vector

D)

       None of these

View Answer
126) The morphine obtained from opium is a

A)

tannin

B)

       alkaloids

C)

gums

D)

       latex

View Answer
127) Hybrid vigour is mostly due to

A)

superiority of all the genes

B)

homozygosity of pure characters

C)

heterozygosity

D)

none of these

View Answer
128) Flowers and lateral branches arise from the

A)

lateral buds

B)

       lentices

C)

stomata

D)

       cuticle

View Answer
129) Chiasma shows the sites of

A)

spindle formation

B)

synapsis

C)

crossing over

D)

       none of these

View Answer
130) The process of cytokinesis refers to the division of

A)

nucleus

B)

       chromosomes

C)

cytoplasm

D)

       none of these

View Answer
131) Which of the following organelle does not contain RNA?

A)

Chromosome

B)

Plasmalemma

C)

       Nucleolus

D)

       Ribosome

View Answer
132) Arachidonic acid is

A)

non-essential fatty acid

B)

essential fatty acid

C)

olyunsaturated fatty acid

D)

both b and c

View Answer
133) Which of the following is polymerized to form proteins ?

A)

Protein

B)

       Carbohydrates

C)

Amino acid

D)

       Muramic acid

View Answer
134) All enzymes are basically

A)

carbohydrates

B)

       steroids

C)

proteins

D)

       lipo-proteins

View Answer
135) The nucleus is separated from surrounding cytoplasm by a nuclear membrane, which is

A)

single layered without pores

B)

double layered with pores

C)

single layered with pores

D)

double layered without pores

View Answer
136) Which organ has a single unit membrane?

A)

Lysosome

B)

       Mitochondria

C)

       Golgi body

D)

       Nucleolus

View Answer
137) Which of the following animal has a notochord throughout its life?

A)

Fish

B)

       Bird

C)

Snake

D)

       Amphioxus

View Answer
138) Piercing and sucking mouth parts are found in

A)

mosquitoes

B)

      housefly

C)

butterfly

D)

ticks

View Answer
139) When the number of organisms at successive levels are plotted they assume the shape of a pyramid. This is called the pyramid of

A)

Biomass

B)

       Number

C)

Energy

D)

       None of these

View Answer
140) Effect of pollution is on

A)

crossing over

B)

       ecological balance

C)

linkage

D)

       mutation

View Answer
141) Deforestation causes

A)

thermal pollution

B)

noise pollution

C)

       soil erosion

D)

       none of these

View Answer
142) A thin film of water is held by the soil particles under the influence of internal attractive force. It is called

A)

hygroscopic water

B)

gravitational water

C)

combined water

D)

       capillary water

View Answer
143) Pneumatophores are usually present in

A)

Murrya

B)

       Eichhornia

C)

Avicinnea

D)

       none of these

View Answer
144) Balloon like outgrowth of parenchyma into the lumen of vessels, is known as

A)

tyloses

B)

       tunica

C)

corpous

D)

       none of these

View Answer
145) In some plants the style is shorter. But in some others, it is longer than the stamens This condition is called

A)

homogamy

B)

       homostyly

C)

       heterostyly

D)

       none of these

View Answer
146) Interferon is

A)

bacteria

B)

       anti-viral

C)

       anti-algal

D)

       anti-bacterial

View Answer
147) Bacterium have flagella with all over body is known as

A)

peritrichous

B)

       amphitrichous

C)

monotrichous

D)

       none of these

View Answer
148) Helotism is a term used for the symbiosis of

A)

algae and bacteria

B)

algae and bryophytes

C)

algae and pteridophytes

D)

algae and fungi

View Answer
149) In Dryopteris the opening mechanism of sporangium is effectively operated by

A)

stalk

B)

       stomium

C)

                       annulus

D)

       none of these

View Answer
150) In DNA, when AGCT occur, their association is as per which of the following pair ?

A)

AG-CT

B)

       AC-GT

C)

AT-GC

D)

       All of these

View Answer
151) Anus is absent in

A)

Unio

B)

       Pheretima

C)

       Periplaneta

D)

       Fasciolci

View Answer
152) The vegetation of Rajasthan is

A)

xerophytic

B)

       deciduous

C)

hydrophytic

D)

       arctic

View Answer
153) In food chain, lion is a

A)

tertiary consumer

B)

secondary consumer

C)

primary consumer

D)

none of these

View Answer
154) Agricultural chemicals include

A)

promotors

B)

       pesticides

C)

       fertilizers

D)

       all of these

View Answer
155) Biological equilibrium is found among the

A)

producers, consumers and decomposers

B)

producers and consumers

C)

producers and decomposers

D)

none of these

View Answer
156) Light energy in photosynthesis is utilized in

A)

\[{{H}_{2}}O\] converted into \[{{H}_{2}}\]

B)

ADP converted into ATP

C)

ATP converted into ADP

D)

none of these

View Answer
157) Nitrates are converted into \[{{N}_{2}}\] by

A)

\[{{N}_{2}}\] fixing bacteria

B)

sulphur fixing bacteria

C)

denitrifying bacteria

D)

none of these

View Answer
158) Genetic dwarfness can be overcome by treating with

A)

cytokinin

B)

       auxins

C)

gibberellins

D)

       ethylene

View Answer
159) The nephridia, in earthworm, are analogous to

A)

gills of prawn

B)

trachea of insects

C)

nematoblasts of Hydra

D)

flame cells of Planaria

View Answer
160) Which special feature present in slime moulds ?

A)

Capsule

B)

       Capillitium

C)

       Claters

D)

       None of these

View Answer
161) Aggregate fruit develops from

A)

multicarpellary, apocarpous ovary

B)

multicarpellary ovary

C)

multicarpellary, syncarpous ovary

D)

monocarpellary ovary

View Answer
162) Respiratory quotient (R.Q.) during early stages of germination of castor seed is

A)

one

B)

                       zero

C)

more than one

D)

       less than one

View Answer
163) In DNA helix, cytosine is paired with guanine by

A)

three hydrogen bonds

B)

two hydrogen bonds

C)

single hydrogen bond

D)

covalent bond

View Answer
164) High content of lysine is present in

A)

wheat

B)

apple

C)

maize

D)

       banana

View Answer
165) In a pond ecosystem the pyramid of biomass is always

A)

irregular

B)

inverted

C)

upright

D)

       none of these

View Answer
166) Members of phylum Porifera are

A)

exclusively marine animals

B)

exclusively fresh water animals

C)

mostly fresh water animals but few are marine animals

D)

mostly marine animals but few are fresh water animals

View Answer
167) Hydra recognises its prey by

A)

nematocyst

B)

some special organs

C)

chemical stimulus of prey

D)

mechanical stimulus of prey

View Answer
168) Shell of mollusc is produced by its

A)

radula

B)

thorax

C)

mantle

D)

       abdomen

View Answer
169) Asymmetry in gastropoda is due to

A)

torsion

B)

       coiling

C)

twisting

D)

       none of these

View Answer
170) The joint of femur, with pelvic girdle, is

A)

hinge joint

B)

       pivot joint

C)

non-movable joint

D)

ball and socket joint

View Answer
171) Which of the following is the part of mid brain of rabbit?

A)

Diencephalon

B)

       Cerebrum

C)

       Corpora quadrigemina

D)

None of these

View Answer
172) Which of the following is a motor nerve?

A)

Auditory

B)

       Abducens

C)

       Optic nerve

D)

       Trigeminal nerve

View Answer
173) Which of the following is called emergency gland of the body?

A)

Testis

B)

       Thymus

C)

       Adrenal

D)

       Pituitary

View Answer
174) Which of the following is both exocrine and endocrine gland

A)

Liver

B)

       Pancreas

C)

       Thyroid

D)

       Adrenal

View Answer
175) Corpus luteum is developed from

A)

oocyte

B)

       nephrostome

C)

       graffian follicle

D)

       none of these

View Answer
176) In most mammals, the testes are located in scrotal sac for

A)

spermatogenesis

B)

sex differentiation

C)

more space to visceral organs

D)

independent functioning of kidney

View Answer
177) Third cleavage of frogs development is

A)

equatorial

B)

       vertical

C)

latitudinal

D)

       none of these

View Answer
178) Which of the following is a transparent tissue?

A)

Tendon

B)

       Hyaline cartilage

C)

                       Fibrous cartilage

D)

       All of these

View Answer
179) Which of the following are not true cells in the blood

A)

Platelets

B)

       Monocytes

C)

       Neutrophils

D)

       Basophils

View Answer
180) Vitamin D is synthesized in skin, by the action of sunlight on

A)

cholesterol

B)

seven-hydroxy-cholesterol

C)

cephanocholesterol

D)

all of these

View Answer
181) In which animal, diaphragm has no role in respiration?

A)

Frog

B)

       Rat

C)

       Camel

D)

       Rabbit

View Answer
182) The area of inner surface of bronchiole is

A)

\[1\,{{m}^{2}}\]

B)

       \[10\,\,{{m}^{2}}\]

C)

       \[100\,\,{{m}^{2}}\]

D)

\[1000\,\,{{m}^{2}}\]

View Answer
183) During the process of blood coagulation, vitamin K helps in

A)

the formation of prothrombin

B)

the formation of thromboplastin

C)

the conversion of fibrinogen into fibrin

D)

the conversion of prothrombin into thrombin

View Answer
184) The heart muscles are

A)

striated and involuntary

B)

striated and voluntary

C)

smooth and involuntary

D)

non-striated and involuntary

View Answer
185) Which of the following amino acids is present in ornithine cycle?

A)

Valine and systine

B)

Arginin and citrulline

C)

(c) Glycine and methionine

D)

(b) None of these

View Answer
186) The joint of radio-ulna with the upper arm is

A)

hinge joint

B)

       pivot joint

C)

       socket joint

D)

       none of these

View Answer
187) Haversian canals are present in

A)

bone marrow

B)

       hyaline cartilage

C)

       bone matrix

D)

       calcified cartilage

View Answer
188) Law of segregation of gametes was proposed by

A)

Mendel

B)

       de Vries

C)

Robert Hook

D)

       Huxley

View Answer
189) Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters?

A)

Absence of limbs in snakes

B)

Presence of webbed toes in aquatic birds

C)

Melanization in peppered moth

D)

Lack of pigment in cave-dwelling animals

View Answer
190) The most important example of point mutation is found in a disease called

A)

thalassemia

B)

       night blindness

C)

       Downs syndrome

D)

       sickle cell anaemia

View Answer
191) Assertion: Agricultural output increased several times after introduction of DDT. Reason: DDT was the first insecticide used on a wide scale.

A)

A

B)

                       B

C)

       C

D)

                       D

E)

E

View Answer
192) Assertion: Diabetes insipidus is marked by excessive urination and too much thirst of water. Reason: Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland.

A)

A

B)

       B

C)

C

D)

                       D

E)

E

View Answer
193) Assertion: Coacervates are believed to be the precursors of life. Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.

A)

A

B)

       B

C)

C

D)

       D

E)

E

View Answer
194) Assertion: Tapeworm roundworm and pinworm are endoparasites of human intestine. Reason: Improperly cooked food is the source of intestinal infections.

A)

A

B)

B

C)

C

D)

       D

E)

E

View Answer
195) Assertion: Fish meal is a rich source of protein for cattle and poultry. Reason: Fish meal is produced from non-edible parts of fishes like fins, tail etc.

A)

A

B)

       B

C)

C

D)

       D

E)

E

View Answer
196) Assertion: Animals adopt different strategies to survive in hostile environment. Reason: Praying mantis is green in colour which merges with plant foliage.

A)

A

B)

       B

C)

C

D)

       D

E)

E

View Answer
197) Assertion: Among the primates, chimpanzee is the closest relative of the present day humans. Reason: The banding pattern in the autosome numbers 3 and 6 of man and chimpanzee is remarkably similar.

A)

A

B)

       B

C)

C

D)

       D

E)

E

View Answer
198) Assertion: Dope test is used to estimate the level of blood alcohol by analyzing the breath of persons drinking alcohol. Reason: A drunken person usually feels tense and less talkative.

A)

A

B)

       B

C)

C

D)

                       D

E)

E

View Answer
199) Assertion: The honey bee queen copulates only ones in her life time. Reason: The honey bee queen can lay fertilized as well as unfertilized eggs.

A)

A

B)

       B

C)

C

D)

       D

E)

E

View Answer
200) Assertion: From evolutionary point of view, human gestation period is believed to be shortening. Reason: One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.

A)

A

B)

       B

C)

C

D)

       D

E)

E

View Answer

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