Solved papers for AMU Medical AMU Solved Paper-2006

AMU Solved Paper-2006 Total Questions - 200

1) A heavy uniform chain lies on a horizontal top of a table. If the coefficient of friction between the chain and the table is 0.25, then the maximum percentage over the length of the chain that can hang over one edge of the table is

A)

20%

B)

25%

C)

35%

D)

15%

View Answer
2) A weight w is suspended from the midpoint of a rope, whose ends are at the same level. In order to make the rope perfectly horizontal, the force applied to each of its ends must be

A)

less than w

B)

equal to w

C)

equal to 2 w

D)

infinitely large

View Answer
3) A disc of mass 100 g is kept floating horizontally in air by firing bullets, each of mass 5 g with the same velocity at the same rate of 10 bullets per second. The bullets rebound with the same speed in opposite direction, the velocity of each bullet at the time of impact is

A)

196cm/s

B)

9.8 cm/s

C)

98 cm/s

D)

980 cm/s

View Answer
4) The velocity of a particle at an instant is 10 m/s. After 3s its velocity will become 16 m/s. The velocity at 2 s, before the given instant will be

A)

6 m/s

B)

4 m/s

C)

2 m/s

D)

1 m/s

View Answer
5) A heavy stone hanging from a massless string of length 15 m is projected horizontally with speed 147 m/s. The speed of the particle at the point where the tension in the string equals the weight of the particle is

A)

10 m/s

B)

7 m/s

C)

12 m/s

D)

None of these

View Answer
6) When a body moves with constant speed in a circular path then

A)

work done will be zero

B)

acceleration will be zero

C)

no force acts on the body

D)

its velocity remains constant

View Answer
7) Two stones are projected with same velocity v at an angle 6 and \[\left( \text{9}0{}^\circ \text{ }-\theta \right).\] If H and \[{{H}_{1}}\]are the greatest height in the two paths, what is the relation between R, H and\[{{H}_{1}}\]?

A)

\[R=4\sqrt{H{{H}_{1}}}\]

B)

\[R=\sqrt{H{{H}_{1}}}\]

C)

\[R=H{{H}_{1}}\]

D)

None of these

View Answer
8) A body initially at rest is moving with uniform acceleration a. Its velocity after n sec is v. The displacement of the body in last 2 s is

A)

\[\frac{2v(n-1)}{n}\]

B)

\[\frac{v(n-1)}{n}\]

C)

\[\frac{v(n+1)}{n}\]

D)

\[\frac{2v(n+1)}{n}\]

View Answer
9) The magnetic force on a point charge is \[\overset{\to }{\mathop{F}}\,=q(\overset{\to }{\mathop{V}}\,\times \overset{\to }{\mathop{B}}\,)\] Here, q = electric charge \[\overset{\to }{\mathop{V}}\,\]= velocity of point charge \[\overset{\to }{\mathop{B}}\,\]= magnetic field The dimension of \[\overset{\to }{\mathop{B}}\,\]is

A)

\[\left[ \text{ML}{{\text{T}}^{-1}}\text{A} \right]\]

B)

\[\left[ {{\text{M}}^{2}}\text{L}{{\text{T}}^{-2}}{{\text{T}}^{-1}} \right]\]

C)

\[\left[ \text{M}{{\text{T}}^{-2}}{{A}^{-1}} \right]\]

D)

None of these

View Answer
10) The first diffraction minimum due to single slit diffraction is 9, for a light of wavelength \[5000\overset{\text{o}}{\mathop{\text{A}}}\,\]. It the width of the slit is \[\text{1}\times \text{1}{{0}^{-\text{4}}}\text{ cm},\] then the value of 9 is

A)

\[30{}^\circ \]

B)

\[45{}^\circ \]

C)

\[60{}^\circ \]

D)

\[15{}^\circ \]

View Answer
11) A body of mass 2 kg is placed on rough horizontal plane. The coefficient of friction between body and plane is 0.2. Then

A)

body will move in forward direction if F = 5 N

B)

body will move in backward direction with acceleration 0.5 m/s2, if force F = 3 N

C)

If F = 3 N then body will be in rest condition

D)

Both (a) and (b) are correct

View Answer
12) A particle   moves   with   a   velocity \[\left( \text{5}\overset{\hat{\ }}{\mathop{\text{i}}}\,-\text{3}\overset{\hat{\ }}{\mathop{\text{j}}}\,\text{ }+\text{ 6}\overset{\hat{\ }}{\mathop{\text{k}}}\, \right)\text{ m}/\text{s}\]under the influence of a constant force \[\overset{\to }{\mathop{\text{F}}}\,=\text{1}0\overset{\hat{\ }}{\mathop{\text{i}}}\,+\text{1}0\overset{\hat{\ }}{\mathop{\text{j}}}\,+\text{2}0\overset{\hat{\ }}{\mathop{\text{k}}}\,\text{ N}.\] The instantaneous power applied to the particle is

A)

200 J/s

B)

40 J/s

C)

140 J/s

D)

170 J/s

View Answer
13) The potential energy of a particle of mass 5 kg moving in the x-y plane is given by \[\text{U}=\left( -\text{7x}+\text{24y} \right)\text{ J},\text{ x}\]and y being in metre. If the particle starts from rest from origin, then speed of particle at t = 2 s is

A)

5 m/s

B)

14 m/s

C)

17.5 m/s

D)

10 m/s

View Answer
14) Find the velocity of centre of mass of the system shown in the figure? \[\left( \frac{2+2\sqrt{3}}{3} \right)\,\overset{\hat{\ }}{\mathop{i}}\,-\frac{2}{3}\overset{\hat{\ }}{\mathop{j}}\,\]                \[4\overset{\hat{\ }}{\mathop{i}}\,\]

A)

\[\left( \frac{2+2\sqrt{3}}{3} \right)\hat{i}-\frac{2}{3}\hat{j}\]

B)

\[4\hat{i}\]

C)

\[\left( \frac{2-2\sqrt{3}}{3} \right)\,\overset{\hat{\ }}{\mathop{i}}\,-\frac{2}{3}\overset{\hat{\ }}{\mathop{j}}\,\]

D)

None of the above

View Answer
15) The ratio of radii of gyration of a circular disc and a circular ring of the same radii and same mass about a tangential axis in the plane is

A)

1 : 2

B)

\[\sqrt{5}:\sqrt{6}\]

C)

2 : 3

D)

2 : 1

View Answer
16) A particle performs uniform circular motion with an angular momentum L. If the frequency of particle motion is doubled and its KE is halved the angular momentum becomes

A)

2 L

B)

4 L

C)

L / 2

D)

L / 4

View Answer
17) A body of mass m rises to height h = R/S from earths surface, where R is earths radius. Ifg is acceleration due to gravity at earths surface, the increase in potential energy is

A)

\[mgh\]

B)

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

C)

\[\frac{5}{6}mgh\]

D)

\[\frac{6}{7}mgh\]

View Answer
18) A satellite is moving on a circular path of radius r around the earth has a time period T. If its radius slightly increases by \[\Delta \]r, the change in it; time period is

A)

\[\frac{3}{2}\left( \frac{T}{r} \right)\Delta r\]

B)

\[\left( \frac{T}{r} \right)\Delta r\]

C)

\[\frac{3}{2}\left( \frac{{{T}^{2}}}{{{r}^{2}}} \right)\Delta r\]

D)

none of these

View Answer
19) A particle executes SHM, its time period is 16 s If its passes through the centre of oscillation then its velocity is 2 m/s at times 2 s. The amplitude will be

A)

7.2 m

B)

4 cm

C)

6 cm

D)

0.72 m

View Answer
20) A particle executes simple harmonic motior. with a frequency f. The frequency with which the potential energy oscillates is

A)

\[f\]

B)

\[f\]/2

C)

2\[f\]

D)

zero

View Answer
21) An astronaut is approaching the moon. He sends out a radio signal of frequency 5000 MHz and the frequency of echo is different from that of the original frequency b) 100 kHz. His velocity of approach with respec- to the moon is

A)

2km/s

B)

3 km/s

C)

4 km/s

D)

5 km/s

View Answer
22) When a sphere is taken to bottom of sea 1 krr: deep, it contracts by 0.01%. The bulk modulus of elasticity of the material of sphere is \[\left( \text{Given }:\text{ Density of water }=\text{ 1 g}/\text{c}{{\text{m}}^{\text{3}}} \right)\]

A)

\[\text{9}.\text{8}\times \text{1}{{0}^{\text{1}0}}\text{ N}/{{\text{m}}^{\text{2}}}\]

B)

\[\text{1}0.\text{2}\times \text{l}{{0}^{\text{1}0}}\text{ N}/{{\text{m}}^{\text{2}}}\]

C)

\[0.\text{98}\times \text{1}{{0}^{\text{1}0}}\text{ N}/{{\text{m}}^{\text{2}}}\]

D)

\[\text{8}.\text{4}\times \text{l}{{0}^{\text{1}0}}\text{ N}/{{\text{m}}^{\text{2}}}\]

View Answer
23) The temperature of hydrogen at which the rms velocity of its molecules is seven times the rms velocity the molecules of nitrogen at 300 K is

A)

2100 K

B)

1700 K

C)

1350 K

D)

1050 K

View Answer
24) The inside and outside temperatures of a refrigerator are 273 K and 303 K respectively. Assuming that refrigerator cycle is reversible, for every joule of work done the heat delivered to the surrounding will be

A)

10 J

B)

20 J

C)

30 J

D)

50 J

View Answer
25) In an energy recycling process, X g of steam at \[100{}^\circ C\] becomes water at \[100{}^\circ C\] which converts Y g of ice at \[0{}^\circ C\] into water at \[100{}^\circ C\]. The ratio of X and Y will be

A)

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

B)

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

C)

3

D)

2

View Answer
26) The surface temperature of the sun is T K and the solar constant for a plate is S. The sun subtends an angle 6 at the planet. Then

A)

\[\text{S}\propto {{\text{T}}^{\text{4}}}\]

B)

\[\text{S}\propto {{\text{T}}^{2}}\]

C)

\[\text{S}\propto {{\theta }^{2}}\]

D)

\[\text{S}\propto \theta \]

View Answer
27) A body at a temperature of \[727{}^\circ C\] and has surface area 5 cm2, radiates 300 J of energy each minute. The emissivity is (Given : Boltzmann constant \[=5.67\times {{10}^{-8}}W{{m}^{2}}{{K}^{4}})\]

A)

\[e\]=0.18

B)

\[e\]=0.02

C)

\[e\]=0.2

D)

\[e\]=0.15

View Answer
28) If at NTP velocity of sound in a gas is 1150 m/s, then the rms velocity of gas molecules at NTP is \[\left( \text{Given}:\text{R}=\text{ 8}.\text{3J}/\text{mol K},{{\text{C}}_{\text{p}}}\text{ }=\text{ 4}.\text{8 cal}/\text{mol K} \right)\]

A)

1600 m/s

B)

1532.19 m/s

C)

160 m/s

D)

zero

View Answer
29) If\[\sigma \]surface charge density, \[\varepsilon \]= electric permittivity the dimensions of \[\frac{\sigma }{\varepsilon }\] are same as

A)

electric force

B)

electric field intensity

C)

pressure

D)

electric charge

View Answer
30) For circuit the equivalent capacitance between P and Q is

A)

6 C

B)

4 C

C)

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

D)

\[\frac{6C}{11}\]

View Answer
31) A wire has resistance 12\[\Omega \]. It is bent in the form of a circle. The effective resistance between the two points on any diameter of the circle is

A)

12\[\Omega \]

B)

24\[\Omega \]

C)

6\[\Omega \]

D)

3\[\Omega \]

View Answer
32) If two identical heaters each rated as (1000 W, 220 V) are connected in parallel to 220 V, then the total power consumed is

A)

200 W

B)

2500 W

C)

250 W

D)

2000 W

View Answer
33) A conducting circular loop of radius r carries a constant current . It is placed in a uniform magnetic field bq such that By is perpendicular to the plane of the loop. The magnetic force acting on the loop is

A)

\[\text{Ir}{{\text{B}}_{\text{o}}}\]

B)

\[\text{2}\pi I\text{r}{{\text{B}}_{\text{o}}}\]

C)

\[\pi I\text{r}{{\text{B}}_{\text{o}}}\]

D)

zero

View Answer
34) In the given figure, the loop is fixed but straight wire can move. The straight wire will

A)

remain stationary

B)

move towards the loop

C)

move away from the loop

D)

rotates about the axis

View Answer
35) At a point on the right bisector of a magnetic dipole, the magnetic

A)

potential varies as \[\frac{1}{{{r}^{2}}}\].

B)

potential is zero at all point on the right bisector

C)

field varies as \[{{r}^{3}}\]

D)

field is perpendicular to the axis of dipole

View Answer
36) The couple acting on a magnet of length10 cm and pole strength 15 Am, kept in a field of \[\text{B}=\text{2}\times \text{1}{{0}^{-\text{5}}}\text{ T},\]at an angle of 30° is

A)

\[\text{1}.\text{5}\times \text{l}{{\text{0}}^{-5}}\text{N}-\text{m}\]

B)

\[\text{1}.\text{5}\times \text{l}{{\text{0}}^{-3}}\text{N}-\text{m}\]

C)

\[\text{1}.\text{5}\times \text{l}{{\text{0}}^{-2}}\text{N}-\text{m}\]

D)

\[\text{1}.\text{5}\times \text{l}{{\text{0}}^{-6}}\text{N}-\text{m}\]

View Answer
37) If a circuit made up of a resistance 1 n and inductance 0.01 H, an alternating emf 200 V at 50 Hz is connected, then the phase difference between the current and the emf in the circuit is

A)

\[\text{ta}{{\text{n}}^{-\text{1}}}\text{ }\left( \pi \right)\]

B)

\[\text{ta}{{\text{n}}^{-\text{1}}}\text{ }\left( \frac{\pi }{2} \right)\]

C)

\[\text{ta}{{\text{n}}^{-\text{1}}}\text{ }\left( \frac{\pi }{4} \right)\]

D)

\[\text{ta}{{\text{n}}^{-\text{1}}}\text{ }\left( \frac{\pi }{3} \right)\]

View Answer
38) An AC is represented by e = 220 sin (100 \[\pi \]) t V and is applied over a resistance of 110 n. The heat produced in 7 min is

A)

\[\text{11}\times \text{l}{{0}^{\text{3}}}\text{ cal}\]

B)

\[\text{22}\times \text{1}{{0}^{\text{3}}}\text{ cal}\]

C)

\[33\times \text{1}{{0}^{\text{3}}}\text{ cal}\]

D)

\[25\times \text{1}{{0}^{\text{3}}}\text{ cal}\]

View Answer
39) The wavelength of a radiowave of frequency of 1 MHz is

A)

400 m

B)

300 m

C)

350 m

D)

200 m

View Answer
40) The correct option, if speed of gamma rays. X-rays and microwaves are \[{{v}_{g}},{{v}_{X}}\]and \[{{v}_{m}}\]respectively will be

A)

\[{{v}_{g}}>{{v}_{X}}>{{v}_{m}}\]

B)

\[{{v}_{g}}<{{v}_{X}}<{{v}_{m}}\]

C)

\[{{v}_{g}}<{{v}_{X}}>{{v}_{m}}\]

D)

\[{{v}_{g}}={{v}_{X}}={{v}_{m}}\]

View Answer
41) The electric field E and magnetic field B in electromagentic wave are

A)

parallel to each other

B)

inclined at an angle of \[45{}^\circ \]

C)

perpendicular to each other

D)

opposite to each other

View Answer
42) Considering normal incidence of ray, the equivalent refractive index of combination of two slabs shown in figure is

A)

1.8

B)

1.43

C)

2

D)

None of these

View Answer
43) To obtain a good photographic print an exposure of 2 s at a distance of 1 m from a 75 cd bulb is done. To obtain an equally satisfactory result, what should be the distance, if time of exposure is 12 s from a 50 cd bulb?

A)

1 m

B)

2 m

C)

3 m

D)

4 m

View Answer
44) In a Youngs experiment, one of the slit is covered with a transparent sheet of thickness \[\text{3}.\text{6}\times \text{1}{{\text{0}}^{-3}}\text{ cm}\]due to which position of central fringe shifts to a position originally occupied by 30th bright fringe. The refractive index of the sheet, if K = 6000 Å is

A)

1.5

B)

1.2

C)

1.3

D)

1.7

View Answer
45) Polarisation of light proves

A)

corpuscular nature of light

B)

quantum nature of light

C)

transverse wave nature of light

D)

longitudinal wave nature of light

View Answer
46) In terms of Rydberg constant R, the wave number of the first Balmer line is

A)

\[R\]

B)

\[3R\]

C)

\[\frac{5R}{36}\]

D)

\[\frac{8R}{9}\]

View Answer
47) In nuclear reaction \[_{2}H{{e}^{4}}{{+}_{Z}}{{X}^{A}}{{\to }_{Z+2}}{{Y}^{A+3}}{{+}_{Z}}{{M}^{A}}\] where M denotes

A)

electron

B)

positron

C)

proton

D)

neutron

View Answer
48) If the de-Broglie wavelength of a proton is \[\text{1}{{0}^{-\text{13}}}\text{ m},\]the electric potential through which it must have been accelerated is

A)

\[\text{4}.0\text{7}\times \text{1}{{0}^{\text{4}}}\text{ V}\]

B)

\[\text{8}.\text{2}\times \text{1}{{0}^{\text{4}}}\text{ V}\]

C)

\[\text{8}.\text{2}\times \text{1}{{0}^{\text{3}}}\text{ V}\]

D)

\[\text{4}.0\text{7}\times \text{1}{{0}^{\text{5}}}\text{ V}\]

View Answer
49) \[n\]alpha particles per second are emitted from \[N\]atoms of a radioactive element. The half-life of radioactive element is (in sec)

A)

\[\frac{n}{N}\]

B)

\[\frac{N}{n}\]

C)

\[\frac{0.693N}{n}\]

D)

\[\frac{0.693\,n}{N}\]

View Answer
50) In a semiconductor diode, the barrier potential offers opposition to only

A)

free electron in n-region

B)

holes in p-region

C)

free electrons in n-region and holes in p-region

D)

free electrons in p-region and holes in n-region

View Answer
51) Maximum entropy will be in which of the following?

A)

Ice

B)

Liquid water

C)

Snow

D)

Water vapours

View Answer
52) What is obtained when chlorine is passed in boiling toluene and product is hydrolysed?

A)

o-cresol

B)

p-cresol

C)

2, 4-dihydroxytoluene

D)

Benzyl alcohol

View Answer
53) Which of the following has covalent bond?

A)

                \[N{{a}_{2}}S\]

B)

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

C)

NaH

D)

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

View Answer
54) Which of the following acts as an oxidising as well as reducing agent?

A)

                \[N{{a}_{2}}S\]

B)

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

C)

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

D)

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

View Answer
55) What is the oxidation state of P in Ba\[{{({{H}_{2}}P{{O}_{2}})}_{2}}\]?

A)

+1

B)

+2

C)

+3

D)

-1

View Answer
56) Which of the following molecules has pyramidal shape?

A)

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

B)

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

C)

\[CO_{3}^{2-}\]

D)

\[NO_{3}^{-}\]

View Answer
57) Maximum number of hydrogen bonds in \[{{H}_{2}}O\] is

A)

1

B)

2

C)

3

D)

4

View Answer
58) Number of isomers possible for \[{{C}_{4}}{{H}_{8}}O\] is

A)

3

B)

4

C)

5

D)

6

View Answer
59) \[{{C}_{6}}{{H}_{5}}CH=CHCHO\xrightarrow{X}{{C}_{6}}{{H}_{5}}CH\]\[=CHC{{H}_{2}}OH\] In the above sequence X can be

A)

\[{{H}_{2}}/Ni\]

B)

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

C)

\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}/{{H}^{+}}\]

D)

Both (a) and (b)

View Answer
60) For a reaction \[{{H}_{2}}+{{I}_{2}}2HI\] at 721 K, the value of equilibrium constant is 50. If 0.5 moles each of \[{{H}_{2}}\] and \[{{I}_{2}}\] is added to the system the value of equilibrium constant will be

A)

40

B)

60

C)

50

D)

30

View Answer
61) Schottky defect generally appears in

A)

NaCI

B)

KCl

C)

CsCI

D)

All of these

View Answer
62) The ability of a given substance to assume two or more crystalline structure is called

A)

amorphism

B)

isomorphism

C)

polymorphism

D)

isomerism

View Answer
63) A cricket ball of 0.5 kg is moving with a velocity of 100 m/s. The wavelength associated with its motion is

A)

1/100 cm

B)

\[6.6\times {{10}^{-34}}m\]

C)

\[1.32\times {{10}^{-35}}m\]

D)

\[6.6\times {{10}^{-28}}m\]

View Answer
64) Which among the following species have the same number of electrons in its outermost as well as penultimate shell?

A)

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

B)

\[{{O}^{2-}}\]

C)

\[{{F}^{-}}\]

D)

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

View Answer
65) \[\Delta {{E}^{o}}\] of combustion of isobutylene is\[-X\,kJ\,mo{{l}^{-1}}\]. The value of \[\Delta {{H}^{o}}\] is

A)

\[=\Delta {{E}^{o}}\]

B)

\[>\Delta {{E}^{o}}\]

C)

= 0

D)

\[<\Delta {{E}^{o}}\]

View Answer
66) At \[{{90}^{o}}C\], pure water has \[{{H}_{3}}{{O}^{+}}\] ion concentration \[{{10}^{-6}}mol\,{{L}^{-1}}\]. The \[{{K}_{w}}\] at \[{{90}^{o}}C\] is

A)

\[{{10}^{-6}}\]

B)

\[{{10}^{-14}}\]

C)

\[{{10}^{-12}}\]

D)

\[{{10}^{-8}}\]

View Answer
67) A gas is found to have a formula \[{{[CO]}_{x}}\]. If its vapour density is 70, the value of x is

A)

2.5

B)

3

C)

5

D)

6

View Answer
68) Which of the following represents soap?

A)

\[{{C}_{17}}{{H}_{35}}COOK\]

B)

\[{{C}_{17}}{{H}_{35}}COOH\]

C)

\[{{C}_{15}}{{H}_{31}}COOH\]

D)

\[{{({{C}_{17}}{{H}_{35}}COO)}_{2}}Ca\]

View Answer
69) Aspirin is chemically

A)

methyl benzoate

B)

ethyl salicylate

C)

acetyl salicylic acid

D)

o-hydroxy benzoic acid

View Answer
70) Vitamin \[{{B}_{6}}\] is known as

A)

pyndoxine

B)

thiamine

C)

tocopherol

D)

riboflavin

View Answer
71) Which of the following compounds is found abundantly in nature?

A)

Fructose

B)

Starch

C)

Glucose

D)

Cellulose

View Answer
72) Synthetic polymer which resembles natural rubber is

A)

neoprene

B)

chloroprene

C)

glyptal

D)

nylon

View Answer
73) Which of the following is not a nitro derivative?

A)

\[{{C}_{6}}{{H}_{5}}N{{O}_{2}}\]

B)

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

C)

D)

\[{{C}_{6}}{{H}_{4}}(OH)N{{O}_{2}}\]

View Answer
74) The reduction of which of the following compound would yield secondary amine?

A)

Alkylnitrile

B)

Carbylamine

C)

Primary amine

D)

Secondary nitro compound

View Answer
75) Which of the aldehyde is most reactive?

A)

\[{{C}_{6}}{{H}_{5}}-CHO\]

B)

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

C)

HCHO

D)

All the equally reactive

View Answer
76) Which of the following does not contain ?COOH group?

A)

Aspirin

B)

Benzoic acid

C)

Picric acid

D)

All have?COOH group

View Answer
77) Which of the following is dihydric alcohol?

A)

Glycerol

B)

Ethylene glycol

C)

Catechol

D)

Resorcinol

View Answer
78) Ethyl alcohol is heated with cone. H2S04. The product formed is

A)

\[C{{H}_{3}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-O{{C}_{2}}{{H}_{5}}\]

B)

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

C)

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

D)

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

View Answer
79) In the first order reaction, the concentration of the reactants is reduced to 25% in one hour. The half-life period of the reaction is

A)

2h

B)

4h

C)

1/2h

D)

1/4 h

View Answer
80) For a reaction, X(g) \[\xrightarrow{{}}\] Y(g) + Z(g) the half-life period is 10 min. In what period of time would the concentration of X be reduced to 10% of original concentration?

A)

20 min

B)

33 min

C)

15 mm

D)

25 min

View Answer
81) The molar freezing point constant for water is\[-{{1.86}^{o}}C\]. If 342 g of cane sugar \[({{C}_{12}}{{H}_{22}}{{O}_{11}})\] is dissolved in 1000 g of water, the solution will freeze at

A)

\[-{{1.86}^{o}}C\]

B)

\[{{1.86}^{o}}C\]

C)

\[{{3.92}^{o}}C\]

D)

\[{{2.42}^{o}}C\]

View Answer
82) The movement of solvent molecules through a semipermeable membrane is called

A)

electrolysis

B)

electrophoresis

C)

osmosis

D)

cataphoresis

View Answer
83) Which of the following is a primary halide?

A)

150-propyl iodide

B)

Secondary butyl iodide

C)

Tertiary butyl bromide

D)

neo-hexyl chloride

View Answer
84) A gas is found to have the formula \[{{(CO)}_{n}}\]. If its vapour density is 56, the value of n will be

A)

7

B)

5

C)

4

D)

3

View Answer
85) Aromatisation of n-heptane by passing over \[(A{{l}_{2}}{{O}_{3}}+C{{r}_{2}}{{O}_{3}})\] catalyst at 773 K gives

A)

benzene

B)

toluene

C)

mixture of Both (a) and (b)

D)

heptylene

View Answer
86) \[{{C}_{6}}{{H}_{5}}C{{H}_{3}}\xrightarrow{Cr{{O}_{2}}C{{l}_{2}}}Z\]In the given sequence Z is

A)

benzaldehyde

B)

toluic acid

C)

phenyl acetic acid

D)

benzoic acid

View Answer
87) Nitroethane can exhibit which one of the following kinds of isomerism?

A)

Metamerism

B)

Optical activity

C)

Tautomerism

D)

Position isomerism

View Answer
88) A compound has 3 chiral carbon atoms. The number of possible optical isomers it can have,

A)

3

B)

3

C)

8

D)

4

View Answer
89) \[4{{K}_{2}}C{{r}_{2}}{{O}_{7}}\xrightarrow{Heat}4{{K}_{2}}Cr{{O}_{4}}+3{{O}_{2}}+X\]. In the above reaction X is

A)

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

B)

\[Cr{{ }_{2}}{{O}_{7}}\]

C)

\[C{{r}_{2}}{{O}_{3}}\]

D)

\[Cr{{O}_{5}}\]

View Answer
90) The coordination number and oxidation number of X in the following compound \[[\,X(S{{O}_{4}}){{(N{{H}_{3}})}_{5}}]Cl\] will be

A)

10 and 3

B)

2 and 6

C)

6 and 3

D)

6 and 4

View Answer
91) In the electrolysis of water, one faraday of electrical energy would evolve

A)

one mole of oxygen

B)

one g atom of oxygen

C)

8 g of oxygen

D)

22.4 L of oxygen

View Answer
92) In which of these processes platinum is used as a catalyst?

A)

Oxidation of ammonia to form \[HN{{O}_{3}}\]

B)

Hardening of oils

C)

Production of synthetic rubber

D)

Synthesis of methanol

View Answer
93) If the half-life of an isotope X is 10 yr, its decay constant is

A)

6.932 \[y{{r}^{-1}}\]

B)

0.6932 \[y{{r}^{-1}}\]

C)

0.06932 \[y{{r}^{-1}}\]

D)

0.006932 \[y{{r}^{-1}}\]

View Answer
94) On strong heating sodium bicarbonate changes into

A)

sodium monoxide

B)

sodium hydroxide

C)

sodium carbonate

D)

sodium peroxide

View Answer
95) Which of the following is not an ore of magnesium?

A)

Camallite

B)

Magnesite

C)

Dolomite

D)

Gypsum

View Answer
96) Aluminium reacts with caustic soda to form

A)

aluminium hydroxide

B)

aluminium oxide

C)

sodium metaaluminate

D)

sodium tetraaluminate

View Answer
97) In laboratory burners, we use

A)

producer gas

B)

oil gas

C)

gobargas

D)

coal gas

View Answer
98) Iron is dropped in dil. \[HN{{O}_{3}}\], it gives

A)

ferric nitrate

B)

ferric nitrate and \[N{{O}_{2}}\]

C)

ferrous nitrate and ammonium nitrate

D)

ferrous nitrate and nitric oxide

View Answer
99) When tin is treated with concentrated nitric acid

A)

it converts into stannous nitrate

B)

it converts into stannic nitrate

C)

it converts into metastannic acid

D)

it becomes passive

View Answer
100) The chief impurity present in red bauxite is

A)

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

B)

\[F{{e}_{2}}{{O}_{3}}\]

C)

\[{{K}_{2}}S{{O}_{4}}\]

D)

NaF

View Answer
101) Cladistics can be best defined as

A)

the relationship between sub-species and species

B)

relationship between two most forward races

C)

relationship between endangered and surviving species

D)

method of classification that attempt to interfere phylogenetic relationship

View Answer
102) Saltatory conduction occurs in

A)

                myelinated nerve fibres

B)

                non- myelinated nerve fibres

C)

                liver cells

D)

                All of the above

View Answer
103) Which one is related to urine concentration in mammals?

A)

                Testosterone hormone

B)

                Antidiuretic hormone

C)

                Oxytocin hormone

D)

                All of the above

View Answer
104) The point by which Annelida advanced over Nematoda

A)

                true coelom

B)

                metameric segmentation

C)

                closed circulation

D)

                All of the above

View Answer
105) Adjacent epithelial cells are held together by, means of

A)

                microsomes

B)

                liposomes

C)

                desmosomes

D)

                glyoxysomes

View Answer
106) An enzyme that uses viral RNA as template for the synthesis of DNA is

A)

                RNA polymerase

B)

                reverse transcriptase

C)

                viral nuclease

D)

                RNA replicase

View Answer
107) Photochemical smog mostly contains

A)

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

B)

                \[CO\]

C)

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

D)

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

View Answer
108) The carrier which transfers the electrons in electron transport system

A)

                phytochrome

B)

                cytochrome

C)

                quantasomes

D)

                fucoxanthin

View Answer
109) The source of agar- agar is

A)

                Chlamydornonas

B)

                Chlorella

C)

                Gelidium

D)

                Spirogyra

View Answer
110) Aggregate fruit is found in

A)

                Ananas sativus

B)

                Annona squamosal

C)

                Artocarpus integrifolia

D)

                Pyrus malus

View Answer
111) A term helotism is used for the symbiosis of

A)

                algae and fungi

B)

                algae and Cycas

C)

                algae and bacteria

D)

                Pinus and fungi

View Answer
112) Kupffer cells are found in

A)

                liver

B)

                heart

C)

                blood

D)

                kidney

View Answer
113) Which one of these is associated with multiple phenotypes?

A)

                Mutation

B)

                Pleiotropy

C)

                Epistasis

D)

                Polygenic inheritance

View Answer
114) First \[C{{O}_{2}}\]acceptor in \[{{C}_{4}}\]plants is

A)

                PEP

B)

                PGA

C)

                RuBP

D)

                Pyruvic acid

View Answer
115) The blood group known as universal acceptor is

A)

A

B)

B

C)

AB

D)

O

View Answer
116) The common point of attachment of all the arms of polytene chromosome is known as

A)

cencromere

B)

chromomere

C)

chromocentre

D)

centrosome

View Answer
117) In the members of family- Malvaceae anthers are described as

A)

                diadelphous and dithecous

B)

                diadelphous and monothecous

C)

                monoadelphous and monothecous

D)

                monoadelphous and dithecous

View Answer

118) Column- I lists the components of body defense and column-II lists the corresponding descriptions. Match the two columns. Choose the correct option from those given

Column- I	Column- II
A. Active natural B. First line of defense C. Passive natural immunity D. Second line of defense	1. Injection of gamma globulins 2. Complement proteins and interferons 3. Direct contact with the pathogens that have entered inside 4. Surface barriers 5. Antibodies transferred through the placenta

A B C D 4 3 5 2

3 4 2 5

3 4 5 2

5 3 2 1

View Answer

119) Haploid structure of Funaria is

A)

calyptras

B)

protonema

C)

apophysis

D)

operculum

View Answer
120) Sal and teak are dominant in

A)

                tropical rain forest

B)

                temperate broad leaf forest

C)

                temperate needle leaf forest

D)

                tropical deciduous forest

View Answer
121) In the angiosperm ovule, central cell of the embryo sac, prior to the entry of pollen tube, contains

A)

a single haploid nucleus

B)

                one diploid and one haploid nuclei

C)

                two haploid polar nuclei

D)

                one diploid secondary nucleus

View Answer
122) Which of the following represents a condition where the motility of the sperms is highly reduced?

A)

Oligospermia

B)

Athenospermia

C)

Azoospermia

D)

Polyspermy

View Answer
123) Which of the following is not an influence auxins?

A)

                Apical dominance

B)

Parthenocarpy

C)

                Tropic movements

D)

Bolting

View Answer
124) Which type of cells is absent in sponges?

A)

Trophocytes

B)

Myocytes

C)

Archaeocytes

D)

Cnidocytes

View Answer
125) Which one of the following pairs of the kind of cells and their secretion is correctly matched?

A)

                Oxyntic cells?a secretion with pH between 2.0 and 3.0

B)

                Alpha cells of islets of Langerhans secretion that decreases blood sugar level

C)

                Kupffer cells?a digestive enzyme that hydrolyses nucleic acids

D)

                Sebaceous glands?a secretion that evaporates for cooling

View Answer
126) Which plant hormone promotes seed, bud dormancy and causes stomatal closure?

A)

I AA

B)

Abscisic acid

C)

\[G{{A}_{1}}\]

D)

Cytokinin

View Answer
127) Green-house effect is due to the increased concentration of

A)

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

B)

\[Ne\]

C)

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

D)

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

View Answer
128) Sickle cell anaemia has not been eliminated from the African population because

A)

                it is controlled by recessive genes

B)

                it is not a fatal disease

C)

                it provides immunity against malaria

D)

                it is controlled by dominant genes

View Answer
129) Mycorrhiza helps in

A)

                nutrition up taking

B)

                food manufacturing

C)

                disease resistance

D)

                disease prevention

View Answer
130) Fever in malaria is due to

A)

                release of merozoites from RBCs

B)

                entry of sporozoites into blood capillaries

C)

                entry of cryptomerozoites into RBCs

D)

                entry of merozoites into liver cells

View Answer
131) Protein in silk thread is

A)

keratin

B)

globulin

C)

fibroin

D)

albumin

View Answer
132) Which of the following is purely motor cranial nerve?

A)

Optic

B)

Olfactory

C)

Vagus

D)

Abducens

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

A)

Body louse         -           Typhoid

B)

House fly            -           Yellow fever

C)

Anopheles         -           Malaria

D)

Aedes                  -           Plague

View Answer
134) Which one of the following is not correctly matched?

A)

Helminthosporium          - Bengal famine

B)

Melanospora                     - Red rust of tea

C)

Aspergillus                  - Aflatoxins

D)

Cercospora                -    Tikka disease of groundnut

View Answer
135) In earthworm self fertilization cannot occur due to

A)

protogyny

B)

protoandry

C)

epigyny

D)

hypogyny

View Answer
136) Which one of the following parasite shows alternation of generation and alternation of host in its life cycle?

A)

Fasdola

B)

Ascaris

C)

Wuchereria

D)

Taenia

View Answer
137) Which of the following is an opiate narcotic?

A)

Morphine

B)

LSD

C)

Amphetamines

D)

Barbiturates

View Answer
138) Amphids are cuticular elevations on ventrolateral lips of Ascar is. These are

A)

tangoreceptors

B)

taetoreceptors

C)

olfactoreceptors

D)

chemoreceptors

View Answer
139) The chemicals which are produced by host plants due to infection as a defence reaction to pathogen are called

A)

toxin

B)

phytotoxin

C)

phytotron

D)

phytoalexins

View Answer
140) Meiosis in Dryopteris takes place during

A)

gamete formation

B)

spore germination

C)

zygote formation

D)

spore formation

View Answer
141) Which malaria parasite has longest incubation period?

A)

Plasmodium vivax

B)

P. falciparum

C)

P. malariae

D)

P. ovate

View Answer
142) Scurvy is caused due to deficiency of vitamin

A)

B

B)

A

C)

E

D)

C

View Answer
143) Pollination by snail and slug is known as

A)

entomophily

B)

ornithophily

C)

anemophily

D)

malacophily

View Answer
144) In which group of the following would you place the plants having vascular tissue and lacking seeds?

A)

Algae

B)

Fungi

C)

Bryophytes

D)

Pteridophytes

View Answer
145) The long bones are hollow and connected by air passage. They are characteristic of

A)

Mammalia

B)

Aves

C)

Reptilia

D)

Sponges

View Answer
146) Inflorescence of Ficus is

A)

raceme

B)

spike

C)

hypanthodium

D)

verticillaster

View Answer
147) The plant hormone controlling fruit ripening is

A)

IAA

B)

GA

C)

Ethylene

D)

ABA

View Answer
148) Which is the example of conditioned reflex?

A)

                Your kneeing took up a stone than dog run away

B)

                Eye closed when anything enter into it

C)

                Hand took up when piercing with needle

D)

                Digestive food goes forward in alimentary canal

View Answer
149) HIV has a protein coat and genetic material

A)

ssRNA

B)

dsRNA

C)

ssDNA

D)

dsDNA

View Answer
150) Colchicine prevents the mitosis of cells at which of the following stage?

A)

Anaphase

B)

Metaphase

C)

Prophase

D)

Interphase

View Answer
151) The poisonous fluid present in nematocyst of Hydra is

A)

venom

B)

haematin

C)

toxin

D)

hypnotoxin

View Answer
152) XXY chromosome constitution is represented by

A)

Downs syndrome

B)

Turners syndrome

C)

Klinefelters syndrome

D)

None of the above

View Answer
153) The fruit which develops from inflorescence is called

A)

achene

B)

berry

C)

etaerio

D)

composite fruit

View Answer
154) The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in the leguminous root nodule is

A)

amminase

B)

nitrogenase

C)

nitrate reductase

D)

nitrite reductase

View Answer
155) Hydrolytic enzymes are found in

A)

lysosomes

B)

peroxisomes

C)

lomasomes

D)

ribosomes

View Answer
156) In Cycas diploxylic vascular bundles are found in

A)

stem

B)

root

C)

leaflet

D)

rachis and leaflet

View Answer
157) The binomial names were accepted by all after the publication of the work by

A)

Linnaeus

B)

Hooker

C)

Bentham

D)

Darwin

View Answer
158) Which of the following is used in genetic engineering?

A)

Plastid

B)

Plasmid

C)

Mitochondria

D)

ER

View Answer
159) If frogs brain is crushed, even than its leg moves on pinpointing. It is called as

A)

                conditional reflex

B)

                simple reflex

C)

                neurotransmitter function

D)

                auconomic nerve conditions

View Answer
160) When centromere is present at one end, the chromosome is

A)

metacentric

B)

excentric

C)

telocentric

D)

apocentric

View Answer
161) Xenia refers to

A)

                effect of pollen on stem

B)

                effect of pollen on taste of fruit

C)

                effect of pollen on vascular tissue

D)

                effect of pollen on endosperm

View Answer
162) Curdling of milk in small intestine takes place due to

A)

trypsin

B)

rennin

C)

ptyalin

D)

chymotrypsin

View Answer
163) The pair of disease caused by virus is

A)

                typhoid, tetanus

B)

                rabies, mumps

C)

                cholera, tuberculosis

D)

                AIDS, syphilis

View Answer
164) Pasteurization is a process which means heating of drinks at

A)

                120°C for 60 minutes

B)

                80°C for 30 minutes

C)

                60°-70°C for 30 minutes

D)

                70°C for 60 minutes

View Answer
165) When an animal has both the characters of male and female, it is called

A)

intersex

B)

super female

C)

super male

D)

gynandromorphy

View Answer
166) An angiospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm will be

A)

16

B)

24

C)

12

D)

8

View Answer
167) Identify the correctly matched pair

A)

                Gir forest                            ?           Rhino

B)

                Kaziranga                            ?           Elephant

C)

                Corbettpark                      ?           Aves

D)

                Runn of Kutch                 ?           Wild ass

View Answer
168) Elater mechanism or spore dispersal is exhibited by

A)

Riccia

B)

Funaria

C)

Liverworts

D)

Marchantia

View Answer
169) Which of the following is living fossil?

A)

Gnetum

B)

Cycas

C)

Ginkgo

D)

Both (a) and (b)

View Answer
170) The most common indicator organism which represents polluted water is

A)

Salmonella typhi

B)

E. coli

C)

Entamoeba histolydca

D)

Vibrio cholera

View Answer
171) The progenies are found to be male sterile after crossing two plants. This is due to some genes which are present in

A)

mitochondria

B)

cytoplasm

C)

nucleus

D)

chloroplast

View Answer
172) Gobar gas contains mainly

A)

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

B)

\[C{{H}_{4}}+{{O}_{3}}\]

C)

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

D)

\[C{{O}_{2}}+S{{O}_{2}}\]

View Answer
173) A fertilizing is produced from

A)

                polar bodies

B)

                middle piece of sperm

C)

                acrosome

D)

                mature eggs

View Answer
174) Heterospory and seed habit is exhibited by a plant having

A)

petiole

B)

spa the

C)

prothallus

D)

ligule

View Answer
175) Which of the following best shown the common origin of man and chimpanzee?

A)

Chromosome banding

B)

Binocular vision

C)

Cranial capacity

D)

Dental formula

View Answer
176) The vitamin which can be synthesized by bacteria inside

A)

B

B)

D

C)

K

D)

E

View Answer
177) Free living aerobic non-photosynthetic nitrogen fixing bacterium is

A)

Azotobacter

B)

B. coli

C)

Nostoc

D)

Salmonella

View Answer
178) In an ecosystem, keystone are those which

A)

                are most frequent

B)

                are present in maximum number

C)

                attain a large biomass

D)

                contribute to ecosystem properties

View Answer
179) Which of the following hormone stimulates the stomach to secrete gastric juice?

A)

Gastrin

B)

Enterokinase

C)

Rennin

D)

Zymase

View Answer
180) Which one of the following contributes to social forestry?

A)

                Leucaena leucocephala

B)

                Mangifera indica

C)

                Jatropha

D)

                None of the above

View Answer
181) The meristem responsible for extra stellar secondary growth in dicot stem is

A)

                inter fascicular cambium

B)

                intra fascicular cambium

C)

                inter calary meristem

D)

                phellogen

View Answer
182) The smallest known agents of infectious disease are

A)

viruses

B)

mycoplasma

C)

viroids

D)

Actinomycetes

View Answer
183) The plant most commonly used as green manure is

A)

Delbergia sissoo

B)

Polyalthea

C)

Sesbania aculeate

D)

None of the above

View Answer
184) Minamata disease prevalent in industrial area due to pollution is due to

A)

lead

B)

cadmium

C)

mercury

D)

zinc

View Answer
185) As a fungus completes its life cycle on two hosts, it is termed as

A)

heteroecious

B)

autoecious

C)

heterothallic

D)

monothallic

View Answer
186) Beer and butter milk are products of fermentation by

A)

                Rhizopus stolonifer

B)

                Caedobacter taeniospiralls

C)

                Bacillus subtilis

D)

                Saccharomyces cerevisae

View Answer
187) The Indian wild ass is in the category of........... by wild life protection act of government of India.

A)

                rare species

B)

                endangered species

C)

                endemic species

D)

                vulnerable species

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

A)

Thymus

B)

Testis

C)

Adrenal

D)

Pituitary

View Answer
189) The set of ions necessary for muscle contraction is

A)

\[C{{a}^{2+}}\]and\[M{{g}^{2+}}\]

B)

\[N{{a}^{+}}\]and \[M{{g}^{2+}}\]

C)

\[N{{a}^{+}}\]and \[{{K}^{+}}\]

D)

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

View Answer
190) A haemophilic man marries a carrier woman, their daughter progenies are

A)

                all haemophilic

B)

                half haemophilic

C)

                half haemophilic and half carrier

D)

                all normal

View Answer
191) Insectivorous plants grow in deficient soil

A)

Na

B)

N

C)

C

D)

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

View Answer
192) In an ovule the wall curvature is more pronounced and embryo sac becomes horse shoe shaped. The ovule is

A)

campylotropous

B)

anatropous

C)

amphitropous

D)

orthotropous

View Answer
193) Genetically engineered human insulin humulin was launched by American drug company on

A)

5th July 1998

B)

5th July 1993

C)

5th July 1973

D)

5th July 1983

View Answer
194) Uterine endometrium, epithelial glands and connective tissue are broken in menstrual phase. This is due to

A)

                over secretion of FSH

B)

                lack of estrogen

C)

                lack of progesterone

D)

                over production of progesterone

View Answer
195) The structure in Amoeba functionally similar to human kidney is

A)

                nucleus

B)

                plasmodesmata

C)

                plasma membrane

D)

                contractile vacuole

View Answer
196) Phenomenon   of   industrial   melanism demonstrates

A)

                induced mutation

B)

                natural selection

C)

                reproductive isolation

D)

                geographical isolation

View Answer
197) Organs which differ in origin but performing similar function are

A)

analogous

B)

homologous

C)

vestigial

D)

atavism

View Answer
198) In Mollusca the osphraidium has function of

A)

                reproduction

B)

                respiration

C)

                testing physical and chemical qualities of food

D)

                excretion

View Answer
199) The stomata in CAM plants open during

A)

day

B)

night

C)

Both (a) and (b)

D)

always closed

View Answer
200) The organelles which take part in photo respiration are

A)

                chloroplast, mitochondria, nucleus

B)

                chloroplast, mitochondria, lysosome

C)

                mitochondria, chloroplast, peroxisome

D)

                mitochondria, lysosomes, peroxisome

View Answer

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