Solved papers for WB JEE Medical WB JEE Medical Solved Paper-2007

WB JEE Medical Solved Paper-2007 Total Questions - 300

1) Acceleration due to gravity is g on the surface of the earth. Then the value of the acceleration due to gravity at a height of 32 km above earths surface is (Assume radius of earth to be 6400 km)

A)

0.99 g

B)

0.8 g

C)

1.01 g

D)

0.9 g

View Answer
2) A piece of ice is floating in a jar containing water. When the ice melts, then the level of water......

A)

rises

B)

falls

C)

remains unchanged

D)

rises or falls

View Answer
3) A wire of length L and area of cross-section A is stretched through a distance \[x\]metre by applying a force F along length, then the work done in this process is (Y is Youngs modulus of the material)

A)

\[\frac{1}{2}(A.L)\left( \frac{Yx}{L} \right)\left( \frac{x}{L} \right)\]

B)

\[(A.L)(YL)\left( \frac{x}{L} \right)\]

C)

\[2(A.L)(YL)\left( \frac{x}{L} \right)\]

D)

\[3(A.L)(YL)\left( \frac{x}{L} \right)\]

View Answer
4) An ice box made of Styrofoam (Thermal conductivity \[=0.01\,J{{m}^{-1}}{{s}^{-1}}{{K}^{-1}}\] is used to keep liquids cool. It has a total wall area Including lid of \[\text{0}\text{.8}\,{{\text{m}}^{\text{2}}}\]and wall thickness of 2.0 cm. A bottle of water is placed in the box and filled with ice. If the outside temperature is \[\text{3}{{\text{0}}^{\text{o}}}\text{C}\] the rate of flow of heat into the box is (in\[\text{J}-{{s}^{-1}}\])

A)

16

B)

14

C)

12

D)

10

View Answer
5) The KE and PE of a particle executing SHM of amplitude a will be equal when displacement is

A)

\[\frac{a}{2}\]

B)

\[a\sqrt{2}\]

C)

\[2a\]

D)

\[\frac{a}{\sqrt{2}}\]

View Answer
6) The equation \[y=A\sin 2\pi \left( \frac{t}{T}-\frac{x}{\lambda } \right),\] where the symbols carry the usual meaning and A, T and \[\lambda \] are positive, represents a wave of

A)

amplitude 2 A

B)

period \[T/\lambda \]

C)

speed\[x\lambda \]

D)

speed\[\left( \frac{\lambda }{T} \right)\]

View Answer
7) A pipe open at both the ends produces a note of fundamental frequency \[{{f}_{1}}.\] When the pipe is 3 kept with \[\frac{3}{4}\text{th}\] of its length in water, it produces 4 a note of fundamental frequency \[{{f}_{2}}.\] The ratio of\[\frac{{{f}_{1}}}{{{f}_{2}}}\] is

A)

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

B)

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

C)

2

D)

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

View Answer
8) The potential at a point P which is forming a comer of a square of side 93 mm with charges, \[{{Q}_{1}}=33\,nC,\,{{Q}_{2}}=-\,51nC,\,{{Q}_{3}}=47\,nC\] located at the other three comers is nearly

A)

\[16\,kV\]

B)

\[4\,kV\]

C)

\[400\,V\]

D)

\[160\,V\]

View Answer
9) Two equal metal balls are charged to 10 and -20    units    of   electricity. Then they are brought in contact with each other and then again separated to    the    original     distance. The ratio of magnitudes of the force between the two balls before and after contact is

A)

8:1

B)

1 : 8

C)

2:1

D)

1:2

View Answer
10) The electric potential due to a small electric dipole at a large distance r from the centre of the dipole is proportional to

A)

r

B)

\[\frac{1}{r}\]

C)

\[\frac{1}{{{r}^{5}}}\]

D)

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

View Answer
11) In the given circuit the equivalent resistance between the points A and B in ohms is ........

A)

9

B)

11.6

C)

14.5

D)

21.2

View Answer
12) An electric water kettle rated 2.1 kW is filled with 1.5 kg of water at \[\text{20}{{\,}^{\text{o}}}\text{C}\text{.}\] How many seconds does it take to reach the boiling point of water? Assume that there are no heat losses from the kettle. Specific heat capacity of water is \[\text{Jk}{{\text{g}}^{-1}}{{\text{K}}^{-1}}\]

A)

60

B)

120

C)

240

D)

480

View Answer
13) In the electric circuit shown each cell has an emf of 2 V and internal resistance of \[1\Omega .\]The external resistance is \[2\Omega .\] The value of the current \[\text{I}\] is (in amperes)

A)

2

B)

1.25

C)

0.4

D)

1.2

View Answer
14) An immersion heater with electrical resistance \[\text{7}\Omega \] is immersed in 0.1 kg of water at \[\text{20}{{\,}^{\text{o}}}\text{C}\] for 3 min. If the flow of current is 4 A, what is the final temperature of the water in ideal conditions? (Specific heat capacity of water\[\text{=}\,\text{4}\text{.2}\times {{10}^{3}}\,JK{{g}^{-1}}{{K}^{-1}}\])

A)

\[\text{28}{{\,}^{\text{o}}}\text{C}\]

B)

\[\text{48}{{\,}^{\text{o}}}\text{C}\]

C)

\[\text{52}{{\,}^{\text{o}}}\text{C}\]

D)

\[68{{\,}^{\text{o}}}\text{C}\]

View Answer
15) Heat produced (cals) in a resistance R When a current \[I\] amperes flows through it fort seconds is given by the expression

A)

\[\frac{{{I}^{2}}Rt}{4.2}\]

B)

\[\frac{I{{R}^{2}}t}{4.2}\]

C)

\[\frac{4.2\,IR}{{{t}^{2}}}\]

D)

\[\frac{IR{{t}^{2}}}{4.2}\]

View Answer
16) Which of the following graphs represent variation of magnetic field B with distance r for a straight long wire carrying current?

A)



B)

C)



D)



View Answer
17) If a coil of 40 turns and area \[\text{40}\,\text{c}{{\text{m}}^{\text{2}}}\] is suddenly removed from a magnetic field, it is observed that a charge of \[2.0\times {{10}^{-4}}C\] flows into the coil. If the resistance of the coil is \[80\Omega ,\] the magnetic flux density in \[\text{Wb/}{{\text{m}}^{\text{2}}}\] is .......

A)

0.5

B)

1.0

C)

1.5

D)

2.0

View Answer
18) The maximum value of AC voltage in a circuit is 707 V. Its rms value is

A)

70.7V

B)

100V

C)

500V

D)

707V

View Answer
19) The magnetic flux linked with the coil varies with time as \[\text{o }\!\!|\!\!\text{ =3}{{\text{t}}^{2}}+4t+9.\] The magnitude of the induced emf at 2 s is

A)

9V

B)

16V

C)

3V

D)

4V

View Answer
20) Band spectrum is also called

A)

molecular spectrum

B)

atomic spectrum

C)

flash spectrum

D)

line absorption spectrum

View Answer
21) A fish at a depth of 12 cm in water is viewed by an observer on the bank of a lake. To what height the image of the fish is raised? (Refractive index of lake water = 4/3)

A)

9 cm

B)

12cm

C)

3.8 cm

D)

3 cm

View Answer
22) A ray of light is incident at \[\text{5}{{\text{0}}^{\text{o}}}\] on the middle of one of the two mirrors arranged at an angle of \[\text{6}{{\text{0}}^{\text{o}}}\] between them. The ray then touches the second mirror, gets reflected back to the first mirror, making an angle of incidence .....

A)

\[\text{5}{{\text{0}}^{\text{o}}}\]

B)

\[\text{6}{{\text{0}}^{\text{o}}}\]

C)

\[\text{7}{{\text{0}}^{\text{o}}}\]

D)

\[\text{8}{{\text{0}}^{\text{o}}}\]

View Answer
23) In a compound microscope, the intermediate image is

A)

virtual, erect and magnified

B)

real, erect and magnified

C)

real, inverted and magnified

D)

virtual, erect and reduced

View Answer
24) A ray of light passes through an equilateral prism such that an angle of incidence is equal to the angle of emergence and the latter is equal to \[\frac{3}{4}\text{th}\] the angle of prism. The angle of deviation is

A)

\[{{45}^{o}}\]

B)

\[{{39}^{o}}\]

C)

\[\text{2}{{\text{0}}^{\text{o}}}\]

D)

\[\text{3}{{\text{0}}^{\text{o}}}\]

View Answer
25) An electron enters uniform electric field maintained by parallel plates and of value \[\text{EV}{{\text{m}}^{-1}}\] with a velocity \[\text{v}\,\text{m}{{\text{s}}^{-1}},\] the plates are separated by a distance d metre, then acceleration of the electron in the field is

A)

\[\frac{Ee}{m}\]

B)

\[\frac{-Ee}{m}\]

C)

\[\frac{Ed}{m}\]

D)

\[Ee\frac{d}{m}\]

View Answer
26) \[{{\text{C}}^{\text{14}}}\] has half-life 5700 yr. At the end of 11400 yr, the actual amount left is

A)

0.5 of original amount

B)

0.25 of original amount

C)

0.125 of original amount

D)

0.0625 of original amount

View Answer
27) The ionization potential of hydrogen is 13.6 V. The energy required to remove an electron from the second orbit of hydrogen is

A)

3.4 eV

B)

6.8 eV

C)

13.6 eV

D)

1.51 eV

View Answer
28) The depletion layer of a\[p-n\] junction

A)

is of constant width irrespective of the bias

B)

acts like an insulating zon& under reverse bias

C)

has a width that increases with an increase in forward bias

D)

is depleted of ions

View Answer
29) Li nucleus has three protons and four neutrons. Mass of lithium nucleus is 7.016005 amu. Mass of proton is 1.007277 amu and mass of neutronis 1.008665 amu. Mass defect for lithium nucleus in amu is

A)

0.04048 amu

B)

0.04050 amu

C)

0.04052 amu

D)

0.04055 amu

View Answer
30) The dimensions of kinetic energy is

A)

\[[{{M}^{2}}{{L}^{2}}T]\]

B)

\[[M{{L}^{2}}T]\]

C)

\[[M{{L}^{2}}{{T}^{-2}}]\]

D)

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

View Answer
31) If the figure below represents a parabola, identify the physical quantities representing Y and X for constant acceleration

A)

X= time, Y= velocity

B)

X = velocity, Y = time

C)

X = time, Y = displacement

D)

X = time, Y =acceleration

View Answer
32) A ball which is at rest is dropped from a height h metre. As it bounces off the floor its speed is 80% of what it was just before touching the ground. The ball will then rise to nearly a height

A)

0.94 h

B)

0.80 h

C)

0.75 h

D)

0.64 h

View Answer
33) Two bodies of different masses are dropped from heights of 16 m and 25 m respectively. The ratio of the time taken by them to reach the ground is

A)

\[\frac{25}{16}\]

B)

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

C)

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

D)

  \[\frac{16}{25}\]

View Answer
34) The recoil velocity of a 4.0 kg rifle that shoots a 0.050 kg bullet at a speed of \[280\,\text{m}{{\text{s}}^{-1}}\] is

A)

\[+\,3.5\,m{{s}^{-1}}\]

B)

\[-\,3.5\,m{{s}^{-1}}\]

C)

\[-\sqrt{(3.5)}m{{s}^{-1}}\]

D)

\[+\sqrt{(3.5)}\,m{{s}^{-1}}\]

View Answer
35) A man of height h walks in a straight path towards a latnp post of height H with uniform velocity u. Then the velocity of the edge of the shadow on the ground will be

A)

\[\frac{hu}{(H-h)}\]

B)

\[\frac{Hu}{(H+h)}\]

C)

\[\frac{(H-h)}{Hu}\]

D)

\[\frac{(H+h)}{Hu}\]

View Answer
36) A train of 150 m length is going towards north direction at a speed of \[10\,\text{m}{{\text{s}}^{-1}}.\] A parrot flies at a speed of \[\text{5}\,\text{m}{{\text{s}}^{-1}}\] towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

A)

12s

B)

8 s

C)

15s

D)

10 s

View Answer
37) In the motion of a rocket, physical quantity which is conserved is

A)

angular momentum

B)

linear momentum

C)

force

D)

work

View Answer
38) An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically above a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is

A)

1200m

B)

0.33km

C)

333.3km

D)

3.33km

View Answer
39) A 10 kg object collides with stationary 5 kg object and after collision they stick together and move forward with velocity \[4\,\text{m}{{\text{s}}^{-1}}.\]What is the velocity with which the 10 kg object hit the second one?

A)

\[4\,m{{s}^{-1}}\]

B)

\[6\,m{{s}^{-1}}\]

C)

\[10\,m{{s}^{-1}}\]

D)

\[12\,m{{s}^{-1}}\]

View Answer
40) When a force is applied on a moving body, its motion is retarded. Then the work done is

A)

positive

B)

negative

C)

zero

D)

positive and negative

View Answer
41) Physical independence of force is a consequence of

A)

third law of motion

B)

second law of motion

C)

first law of motion

D)

all of these laws

View Answer
42) The kinetic energy of a body becomes four times its initial value. The new momentum will be ...............

A)

same as the initial value

B)

twice the initial value

C)

thrice the initial value

D)

half of its initial value

View Answer
43) An ice cart of mass 60 kg rests on a horizontal snow patch with coefficient of static friction \[\frac{1}{3}.\] Assuming that there is no vertical acceleration, find the magnitude of the maximum horizontal force required to move the ice cart. \[(g=9.8\,m{{s}^{-2}})\]

A)

100 N

B)

110 N

C)

209 N

D)

196 N

View Answer
44) Moment of a couple is called

A)

impulse

B)

couple

C)

torque

D)

angular momentum

View Answer
45) A cyclist is moving in a circular track of radius 80 m with a velocity v = 36 km/h. He has to lean from the vertical approximately through an angle (Take \[g=10\,m{{s}^{-2}}\])

A)

\[{{\tan }^{-1}}(4)\]

B)

\[{{\tan }^{-1}}\left( \frac{1}{3} \right)\]

C)

\[{{\tan }^{-1}}\left( \frac{1}{4} \right)\]

D)

\[{{\tan }^{-1}}\left( \frac{1}{8} \right)\]

View Answer
46) An athlete throws a discus from rest to a final angular velocity of 15 rad/s in 0.270 s before releasing it. During acceleration, discus moves a circular arc of radius 0.810 m. Acceleration of discus before it is released is..... . \[m{{s}^{-2}}.\]

A)

45

B)

182

C)

187

D)

192

View Answer
47) A motor is rotating at a constant angular velocity of 600 rpm. The angular displacement per second is

A)

\[\frac{3}{50\pi }\,rad\]

B)

\[\frac{3\pi }{50}\,rad\]

C)

\[\frac{25\,\pi }{3}\,rad\]

D)

\[\frac{50\,\pi }{3}\,rad\]

View Answer
48) If the mass of moon is\[\frac{1}{90}\] of earths m ass, its radius is\[\frac{1}{3}\]of earths radius and if g is acceleration due to gravity on earth, then the acceleration due to gravity on moon is ......

A)

\[\frac{g}{3}\]

B)

\[\frac{g}{90}\]

C)

\[\frac{g}{10}\]

D)

\[\frac{g}{9}\]

View Answer
49) A red coloured object illuminated by mercury vapour lamp, when seen through a green filter, will appear

A)

red

B)

blue

C)

violet

D)

black

View Answer
50) Time taken by sunlight to pass through a window of thickness 4 mm whose refractive index is\[\frac{3}{2}\]is

A)

\[2\times {{10}^{-4}}s\]

B)

\[2\times {{10}^{4}}s\]

C)

\[2\times {{10}^{-11}}s\]

D)

\[2\times {{10}^{11}}s\]

View Answer
51) Two thin lenses of focal length 20 cm and 25 cm are in contact. The effective power of the combination is

A)

4.5 D

B)

18 D

C)

45 D

D)

9 D

View Answer
52) The magnification of the image when an object is placed at a distance \[x\]from the principal focus of a mirror of focal length\[f\] is

A)

\[\frac{x}{f}\]

B)

\[1+\frac{f}{x}\]

C)

\[\frac{f}{x}\]

D)

\[1-\frac{f}{x}\]

View Answer
53) In the Youngs double slit experiment, the central maxima is observed to be \[{{\text{I}}_{\text{0}}}\text{.}\]If one of the slits is covered, then the intensity at the central maxima will become

A)

\[\frac{{{I}_{0}}}{2}\]

B)

\[\frac{{{I}_{0}}}{\sqrt{2}}\]

C)

\[\frac{{{I}_{0}}}{4}\]

D)

\[{{I}_{0}}\]

View Answer
54) The ratio of the de-Broglie wavelength of an \[\alpha -\]particle and a proton of same kinetic energy is

A)

1:2

B)

1:1

C)

\[1:\sqrt{2}\]

D)

4 : 1

View Answer
55) Which of the following is not conserved in nuclear reaction?

A)

Total energy

B)

Mass number

C)

Charge number

D)

Number of fundamental particles

View Answer
56) The number of a-particles and \[\beta -\]particles respectively emitted in the reaction\[{{\,}_{88}}{{A}^{196}}\to {{\,}_{78}}{{B}^{164}}\] are

A)

8 and 8

B)

8 and 6

C)

6 and 8

D)

6 and 6

View Answer
57) The counting rate observed from a radioactive source at t = 0 was 1600 count/s and at t = 8 s it was 100 counts/s. The counting rate observed as counts per second at t = 6 s, will be

A)

400

B)

300

C)

250

D)

200

View Answer
58) If \[{{n}_{1}}\]and \[{{n}_{2}}\]are the refractive indices of the core and the cladding respectively of an optic fibre, then

A)

\[{{n}_{1}}={{n}_{2}}\]

B)

\[{{n}_{1}}<{{n}_{2}}\]

C)

\[{{n}_{2}}<{{n}_{1}}\]

D)

\[{{n}_{2}}=2{{n}_{1}}\]

View Answer
59) The dimensional formula of magnetic flux is

A)

\[[ML{{T}^{-2}}{{A}^{-1}}]\]

B)

\[[M{{L}^{2}}{{T}^{-1}}{{A}^{-1}}]\]

C)

\[[M{{L}^{2}}{{T}^{-1}}{{A}^{-2}}]\]

D)

\[[M{{L}^{2}}{{T}^{-2}}{{A}^{-1}}]\]

View Answer
60) A physical quantity A is related to four observables a, b, c and d as follows\[A=\frac{{{a}^{2}}{{b}^{3}}}{c\sqrt{d}}\] The percentage errors of measurement in a, b, c and d are 1%, 3%, 2% and 2% respectively. What is the percentage error in the quantity A?

A)

12%

B)

7%

C)

5%

D)

14%

View Answer
61) A body starting from rest moves with constant acceleration. The ratio of distance covered by the body during the 5th second to that covered in 5 s is

A)

\[\frac{9}{25}\]

B)

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

C)

\[\frac{25}{5}\]

D)

\[\frac{1}{25}\]

View Answer
62) The area under acceleration-time graph gives

A)

distance travelled

B)

change in acceleration

C)

force acting

D)

change in velocity

View Answer
63) A particle is displaced from a position\[(2\hat{i}-\hat{j}+\hat{k})\]to another position \[(3\hat{i}+2\hat{j}-2\hat{k})\] under the action of the force of \[(2\hat{i}+\hat{j}-\hat{k}).\] The work done by the force in an arbitrary unit is

A)

8

B)

10

C)

12

D)

16

View Answer
64) From the top of tower, a stone is thrown up. It reaches the ground in \[{{t}_{1}}\]second. A second stone thrown down-with the same speed reaches the ground in \[{{t}_{2}}\]second. A third stone released from rest reaches the ground in \[{{t}_{3}}\]second. Then

A)

\[{{t}_{3}}=\frac{({{t}_{1}}+{{t}_{2}})}{2}\]

B)

\[{{t}_{3}}=\sqrt{{{t}_{1}}{{t}_{2}}}\]

C)

\[\frac{1}{{{t}_{3}}}=\frac{1}{{{t}_{1}}}-\frac{1}{{{t}_{2}}}\]

D)

\[t_{3}^{2}=t_{2}^{2}-t_{1}^{2}\]

View Answer
65) An object is projected at an angle of \[\text{4}{{\text{5}}^{\text{o}}}\] with the horizontal. The horizontal range and maximum height reached will be in the ratio :

A)

1: 2

B)

2 :1

C)

1 : 4

D)

4 : 1

View Answer
66) If the length of the seconds hand in a stop-clock is 3 cm, the angular velocity and linear velocity of the tip is

A)

\[0.2047\text{ }rad/s,\text{ }0.0314\text{ }m{{s}^{-1}}\]

B)

\[0.2547\text{ }rad/s,\text{ }0.314\text{ }m{{s}^{-1}}\]

C)

\[0.1472\text{ }rad/s,\text{ }0.06314\text{ }m{{s}^{-1}}\]

D)

\[~0.1047\text{ }rad/s,\text{ }0.00314\text{ }m{{s}^{-1}}\]

View Answer
67) A player caught a cricket ball of mass 150 g moving at the rate of \[\text{20}\,\text{m}{{\text{s}}^{-1}}.\] If the catching process be completed in 0.1 s, the force of the blow exerted by the ball on the hands of the player is

A)

0.3 N

B)

30 N

C)

300 N

D)

3000 N

View Answer
68) A uniform metal chain is placed on a rough table such that one end of it hangs down over the edge of the table. When one-third of its length hangs over the edge, the chain starts sliding. Then, the coefficient of static friction is

A)

0.3 N

B)

30N

C)

300 N

D)

3000 N

View Answer
69) Two masses M and M/2 are joined together by means of light inextensible string passed over a frictionless pulley as shown in the figure. When the bigger mass is released, the small one will ascend with an acceleration of

A)

\[\frac{g}{3}\]

B)

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

C)

\[\frac{g}{2}\]

D)

g

View Answer
70) In elastic collision

A)

both momentum and kinetic energies are conserved

B)

both momentum and kinetic energies are not conserved

C)

only energy is conserved

D)

only mechanical energy is conserved

View Answer
71) Three identical spheres, each of mass 1kg are kept as shown in figure below, touching each other, with their centres on a straight line. If their centres are marked P, Q, R respectively, the distance of centre of mass of the system from P is

A)

(a ) \[\frac{PQ+PR+QR}{3}\]

B)

\[\frac{PQ+PR}{3}\]

C)

\[\frac{PQ+QR}{3}\]

D)

\[\frac{PR+QR}{3}\]

View Answer
72) The moment of inertia of a thin rod of mass M and length L, about an axis perpendicular to the rod at a distance \[\frac{L}{4}\] from one end is

A)

\[\frac{M{{L}^{2}}}{6}\]

B)

\[\frac{M{{L}^{2}}}{12}\]

C)

\[\frac{7M{{L}^{2}}}{24}\]

D)

\[\frac{7M{{L}^{2}}}{48}\]

View Answer
73) A body rolls down an inclined plane. If ifs kinetic energy of rotation is 40% of its kinetic energy of translation, then the body is

A)

solid cylinder

B)

solid sphere

C)

disc

D)

ring

View Answer
74) Which of the following statements about the gravitational constant is true?

A)

It is a force

B)

It has no unit

C)

It has same value in all systems of units

D)

It does not depend on the nature of the medium in which the bodies are kept

View Answer
75) Two identical solid copper spheres of radius R are placed in contact with each other. The gravitational attraction between them is proportional to

A)

\[{{R}^{2}}\]

B)

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

C)

\[{{R}^{4}}\]

D)

\[{{R}^{-4}}\]

View Answer
76) The modulus of elasticity is dimensionally equivalent to

A)

strain

B)

force

C)

stress

D)

coefficient of viscosity

View Answer
77) Radius of an air bubble at the bottom of the lake is r and it becomes 2r when the air bubble rises to the top surface of the lake. If P cm of water be the atmospheric pressure, then the depth of the lake is

A)

2P

B)

8P

C)

4P

D)

7P

View Answer
78) A manometer connected to a closed tap reads \[4.5\times {{10}^{5}}\,\]Pa. When the tap is opened the reading of the manometer falls to \[4\times {{10}^{5}}\,\] Pa. Then the velocity of flow of water is

A)

\[7\,m{{s}^{-1}}\]

B)

\[8\,m{{s}^{-1}}\]

C)

\[9\,m{{s}^{-1}}\]

D)

\[10\,m{{s}^{-1}}\]

View Answer
79) The temperature of equal masses of three different liquids A, B and C are \[\text{12}{{\,}^{\text{o}}}\text{C,}\,\text{19}{{\,}^{\text{o}}}\text{C}\]and \[\text{28}{{\,}^{\text{o}}}\text{C}\]respectively. The temperature when A and B are mixed is \[\text{16}{{\,}^{\text{o}}}\text{C}\]and when B and C are mixed is \[\text{23}{{\,}^{\text{o}}}\text{C}\text{.}\] The temperature when A and C are mixed is

A)

\[18.2{{\,}^{o}}C\]

B)

\[22{{\,}^{o}}C\]

C)

\[20.2{{\,}^{o}}C\]

D)

\[24.2{{\,}^{o}}C\]

View Answer
80) The time period of the seconds hand of a watch is

A)

1 h

B)

1s

C)

12 h

D)

1 min

View Answer
81) A particle starts SHM from the mean position. Its amplitude is a and total energy E. At one jg instant its kinetic energy is \[\text{3}\frac{\text{E}}{\text{4}}\text{.}\] Its 4 displacement at that instant is

A)

\[\frac{a}{\sqrt{2}}\]

B)

\[\frac{a}{2}\]

C)

\[\frac{a}{\sqrt{\left( \frac{3}{2} \right)}}\]

D)

\[\frac{a}{\sqrt{3}}\]

View Answer
82) A particle executes linear simple harmonic motion with an amplitude of 2 cm. When the particle is at 1 cm from the mean position the magnitude of its velocity is equal to that of its acceleration. Then its time period in second is

A)

\[\frac{1}{2\pi \sqrt{3}}\]

B)

\[2\pi \sqrt{3}\]

C)

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

D)

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

View Answer
83) A closed organ pipe and an open organ pipe are tuned to the same fundamental frequency. The ratio of their lengths is

A)

1:1

B)

2:1

C)

1: 4

D)

1 : 2

View Answer
84) An observer standing near the sea shore/min. If the wavelength of the water wave is 10 m, then the velocity of water wave is

A)

\[540\,m{{s}^{-1}}\]

B)

\[5.4\,m{{s}^{-1}}\]

C)

\[0.184\,m{{s}^{-1}}\]

D)

\[9\,m{{s}^{-1}}\]

View Answer
85) A set of 24 tuning forks are so arranged that each gives 6 beats/s with the previous one. If the frequency of the last tuning fork is double that of the first, frequency of the second tuning fork is

A)

138 Hz

B)

132 Hz

C)

144 Hz

D)

276 Hz

View Answer
86) The electrostatic field due to a charged conductor just outside the conductor is

A)

zero and parallel to the surface at every point inside the conductor

B)

zero and is normal to the surface at every point inside the conductor

C)

parallel to the surface at every point and zero inside the conductor

D)

normal to the surface at every point and zero inside the conductor

View Answer
87) A point charge + q is placed at the midpoint of a cube of side a. The electric flux emerging from the cube is

A)

zero

B)

\[\frac{3q{{a}^{2}}}{{{\varepsilon }_{0}}}\]

C)

\[\frac{q}{{{\varepsilon }_{0}}}\]

D)

\[\frac{{{\varepsilon }_{0}}}{4q{{a}^{2}}}\]

View Answer
88) Figure below shows four plates each of area A and separated from one another by a distance d. What is the capacitance between P and Q?

A)

\[\frac{{{\varepsilon }_{0}}A}{d}\]

B)

\[\frac{2{{\varepsilon }_{0}}A}{d}\]

C)

\[\frac{3{{\varepsilon }_{0}}A}{d}\]

D)

\[\frac{4{{\varepsilon }_{0}}A}{d}\]

View Answer
89) A soap bubble is charged to a potential of 16 V. Its radius is, then doubled. The potential of the bubble now will be

A)

16 V

B)

8 V

C)

4 V

D)

2 V

View Answer
90) A \[10\,\Omega \]electric heater operates on a 110 V line. The rate at which heat is developed in watts is

A)

1310 W

B)

670 W

C)

810 W

D)

1210 W

View Answer
91) For a certain thermocouple, if the temperature of the cold junction is \[\text{0}{{\,}^{\text{o}}}\text{C,}\] the neutral temperature and inversion temperatures are \[285{{\,}^{\text{o}}}\text{C}\]and \[570{{\,}^{\text{o}}}\text{C}\]respectively. If the cold junction is brought to \[\text{10}{{\,}^{\text{o}}}\text{C,}\] then the new neutral and inversion temperatures are respectively

A)

\[285{{\,}^{o}}C\] and \[560{{\,}^{o}}C\]

B)

\[285{{\,}^{o}}C\]and \[570{{\,}^{o}}C\]

C)

\[295{{\,}^{o}}C\]and \[560{{\,}^{o}}C\]

D)

\[275{{\,}^{o}}C\]and \[560{{\,}^{o}}C\]

View Answer
92) In which of the following substances does resistance   decrease   with   increase   in temperature?

A)

Copper

B)

Carbon

C)

Constantan

D)

Silver

View Answer
93) Resistors P and Q are connected in the gaps of the meter bridge. The balancing point is obtained \[\frac{1}{3}m\] from the zero end. If a\[6\,\Omega \] resistance is connected in series with P the balance point shifts to \[\frac{2}{3}m\] from the same end. P and Q are

A)

4, 2

B)

2, 4

C)

bothand

D)

neithernor

View Answer
94) The currents \[{{i}_{1}}\] and \[{{i}_{2}}\] through the resistors \[{{R}_{1}}(=10\,\Omega )\] and\[{{R}_{2}}(=30\,\Omega )\] in the circuit diagram with \[{{E}_{1}}=3V,\,{{E}_{2}}=3V\] and \[{{E}_{3}}=2\,V\] are respectively

A)

0.2 A, 0.1 A

B)

0.4 A, 0.2 A

C)

0.1 A, 0.2 A

D)

0.2 A, 0.4 A

View Answer
95) An \[\alpha -\] particle with a specific charge of \[2.5\times {{10}^{7}}C-k{{g}^{-1}}\] moves with a speed of \[2\times {{10}^{5}}\,m{{s}^{-1}}\] in a perpendicular magnetic field of 0.05 T. Then the radius of the circular path described by it is

A)

8 cm

B)

4 cm

C)

16 cm

D)

2 cm

View Answer
96) A milliammeter of range 0 - 30 mA has internal resistance of \[20\,\Omega .\] The resistance to be connected in series to convert it into a voltmeter of maximum reading 3V is

A)

490

B)

800

C)

400

D)

300

View Answer
97) A straight conductor of length \[l\] carrying a current \[I,\] is bent in the form of a semicircle. The magnetic field (in tesla) at the centre of the semicircle is

A)

\[\frac{{{\pi }^{2}}I}{l}\times {{10}^{-7}}\]

B)

\[\frac{\pi I}{l}\times {{10}^{-7}}\]

C)

\[\frac{\pi I}{{{l}^{2}}}\times {{10}^{-7}}\]

D)

\[\frac{\pi {{I}^{2}}}{l}\times {{10}^{-7}}\]

View Answer
98) A coil having an inductance of 0.5 H carries a current which is uniformly varying from 0 to 10 A in 2 s. The emf (in volts) generated in the coil is

A)

10

B)

5

C)

2.5

D)

1.25

View Answer
99) If an alternating voltage is represented as \[E=141\,\sin (628\,t),\] then the rms value of the voltage and the frequency are respectively

A)

141V, 628 Hz

B)

100 V, 50 Hz

C)

100 V, 100 Hz

D)

141 V, 100 Hz

View Answer
100) A step-down transformer is used on a 1000 V line to deliver 20 A at 120 V at the secondary coil. If the efficiency of the transformer is 80%, the current drawn from the line is

A)

3 A

B)

\[30\,A\]

C)

\[0.3\,A\]

D)

\[2.4\,A\]

View Answer
101) A liquid is in equilibrium with its vapour at its boiling point. On the average, the molecules in two phases have equal

A)

inter- molecular forces

B)

potential energy

C)

kinetic energy

D)

total energy

View Answer
102) For the chemical reaction the amount of\[{{X}_{3}}Y\] at equilibrium is affected by

A)

temperature and pressure

B)

temperature only

C)

pressure only

D)

temperature, pressure and catalyst

View Answer
103) The pair of compound which cannot exists together in solution is

A)

\[NaHC{{O}_{3}}\]and \[NaOH\]

B)

\[N{{a}_{2}}C{{O}_{3}}\]and \[NHC{{O}_{3}}\]

C)

\[~N{{a}_{2}}C{{O}_{3}}\] and\[NaOH\]

D)

\[NaHC{{O}_{3}}\]and x

View Answer
104) The compound will react most readily with \[NaOH\] to form methanol is

A)

\[{{(C{{H}_{3}})}_{4}}{{N}^{+}}{{I}^{-}}\]

B)

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

C)

\[{{(C{{H}_{3}})}_{3}}{{S}^{+}}{{I}^{-}}\]

D)

\[{{(C{{H}_{3}})}_{3}}Cl\]

View Answer
105) Which has maximum number of atoms?

A)

24 g of C

B)

56 g of Fe

C)

26 g of Al

D)

108 g of Ag

View Answer
106) In homogeneous catalysis

A)

the reactants, catalyst and products are in the same phase.

B)

the catalyst and reactants are in the same phase.

C)

the catalyst and products are in the same phase.

D)

the reactants and products are in the same phase.

View Answer
107) Which of the following has the smallest number of molecules?

A)

0.1 mole of \[C{{O}_{2}}\] gas

B)

11.2L of \[C{{O}_{2}}\]gas at STP

C)

22 got \[C{{O}_{2}}\]gas

D)

\[22.4\times {{10}^{3}}mL\]of\[C{{O}_{2}}\]gas at STP

View Answer
108) \[4.6\times {{10}^{22}}\]atoms of an element weigh 13.8g. The atomic weight of that element is

A)

290

B)

180

C)

34.4

D)

10.4

View Answer
109) The decomposition of hydrogen peroxide can be slowed by the addition of acetamide. The latter acts as a

A)

detainer

B)

stopper

C)

promoter

D)

inhibitor

View Answer
110) Which one of the following compounds has \[s{{p}^{2}}\]hybridisation?

A)

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

B)

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

C)

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

D)

\[~CO\]

View Answer
111) Identify the least stable ion amongst the following.

A)

\[L{{i}^{-}}\]

B)

\[B{{e}^{-}}\]

C)

\[~{{B}^{-}}\]

D)

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

View Answer
112) Number of lone pair (s) in \[XeO{{F}_{4}}\]is/are

A)

0

B)

1

C)

2

D)

3

View Answer
113) The half-life period of radioactive element is 140 days. After 560 days, 1 gram of element will reduce to

A)

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

B)

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

C)

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

D)

\[\frac{1}{16}g\]

View Answer
114) Which of the following is used in the treatment of blood cancer?

A)

\[{{I}^{131}}\]

B)

\[{{P}^{32}}\]

C)

\[Rn\]

D)

\[{{I}^{127}}\]

View Answer
115) The orbital angular momentum of an electron in \[2s\] orbital is

A)

\[+\frac{1}{2}\frac{h}{2\pi }\]

B)

zero

C)

\[\frac{h}{2\pi }\]

D)

\[\sqrt{2}\frac{h}{2\pi }\]

View Answer
116) The starting material used in Solvas process are

A)

sodium sulphate

B)

brine solution

C)

camallite

D)

all of the above

View Answer
117) The ionisation energy of hydrogen atom is 13.6 eV. What will be the ionisation energy of \[\text{H}{{\text{e}}^{\text{+}}}\]?

A)

\[13.6\text{ }eV\]

B)

\[54.4\text{ }eV\]

C)

\[122.4\text{ }eV\]

D)

Zero

View Answer
118) In Downs method for the extraction of sodium, the melting point of the electrolyte is lowered by adding

A)

potassium chloride

B)

calcium chlpnde

C)

both calcium chloride and potassium fluoride

D)

potassium fluoride only

View Answer
119) Calcium is obtained by

A)

electrolysis of molten \[CaC{{l}_{2}}\]

B)

electrolysis of solution of \[CaC{{l}_{2}}\] in water

C)

reduction of \[CaC{{l}_{2}}\] with carbon

D)

roasting of lime stone

View Answer
120) Which of the following is philosophers wool?

A)

\[ZnO\]

B)

\[HgO\]

C)

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

D)

\[CuO\]

View Answer
121) . The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is

A)

2

B)

17

C)

37

D)

38

View Answer
122) The number of \[\alpha \] and \[\beta \] particles emitted in nuclear reaction \[{{\,}_{90}}T{{h}^{228}}\to {{\,}_{83}}B{{i}^{212}}\] are respectively

A)

4, 1

B)

3, 7

C)

8, 1

D)

4, 7

View Answer
123) 2g of mixture of CO and \[\text{C}{{\text{O}}_{\text{2}}}\]on reaction with excess \[{{\text{I}}_{\text{2}}}{{\text{O}}_{\text{5}}}\]produced 2.54g of \[{{\text{I}}_{2}}.\]What would be the mass % of \[\text{C}{{\text{O}}_{\text{2}}}\]in the original mixture?

A)

60

B)

30

C)

70

D)

35

View Answer
124) When 10g of 90% pure lime stone is heated completely, the volume (in litres) of \[\text{C}{{\text{O}}_{\text{2}}}\]is liberated at STP is

A)

22.4

B)

2.24

C)

20.16

D)

2.016

View Answer
125) Which element has highest electronegativity ?

A)

F

B)

He

C)

Ne

D)

Na

View Answer
126) The first ionisation potential of Na, Mg, Al and Si are in the order

A)

Na < Mg > Al < Si

B)

Na > Mg > Al > Si

C)

Na < Mg < Al > Si

D)

Na > Mg > Al < Si

View Answer
127) Which is the chief ore of copper?

A)

Galena

B)

Copper pyrites

C)

Sphalerite

D)

Siderite

View Answer
128) Ferrous sulphate \[\text{(FeS}{{\text{O}}_{4}}\text{.7}{{\text{H}}_{2}}\text{O)}\] is known as

A)

vermillion

B)

Glaubes salt

C)

green vitriol

D)

Mohrs salt

View Answer
129) The correct order of radii is

A)

\[N<Be<B\]

B)

\[{{F}^{-}}<{{O}^{2-}}<{{N}^{3-}}\]

C)

\[Na<Li<K\]

D)

\[F{{e}^{3+}}<F{{e}^{2+}}<F{{e}^{4+}}\]

View Answer
130) Law of constant composition is same as the law of

A)

conservation of mass

B)

conservation of energy

C)

multiple proportion

D)

definite proportion

View Answer
131) Which of the oxides does not react with both of an acid and alkali, is?

A)

\[ZnO\]

B)

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

C)

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

D)

\[BeO\]

View Answer
132) \[\text{BC}{{\text{l}}_{\text{3}}}\]is a planar molecule, while \[\text{NC}{{\text{l}}_{3}}\]is pyramidal, because

A)

\[NCl\] bond is more covalent than \[BCl\] bond

B)

nitrogen atom is smaller than boron atom

C)

\[BCl\]bond is more polar than \[N-Cl\]bond

D)

\[\text{BC}{{\text{l}}_{\text{3}}}\]has no lone pair of electrons but \[NC{{l}_{3}}\] has a lone pair of electrons

View Answer
133) The oxidation state of C in \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\]is

A)

\[+\text{ }6\]

B)

\[-6\]

C)

0

D)

\[+\text{ }4\]

View Answer
134) If molecular weight of \[KMn{{O}_{4}}\] is M, then its equivalent weight in acidic medium would be

A)

\[~M\]

B)

\[\frac{M}{2}\]

C)

\[\frac{M}{5}\]

D)

\[\frac{M}{3}\]

View Answer
135) A current of 12 ampere is passed through an electrolytic cell containing aqueous \[NiS{{O}_{4}}\] solution. Both Ni and \[{{H}_{2}}\]gas are formed at the cathode. The current efficiency is 60%. What is the mass of nickel deposited on the cathode per hour?

A)

7.883 g

B)

3.941 g

C)

5.91 g

D)

2.645 g

View Answer
136) The correct IUPAC name of

A)

1-cyclopropyl cyclobutane

B)

1,1-dicyclobutane

C)

1-cyclobutane-1- cyclopropane

D)

none of the above

View Answer
137) Geometrical isomerism is possible in

A)

acetone-oxime

B)

isobutene

C)

acetophenone-oxime

D)

benzophenone-oxime

View Answer
138) The   cell   reaction   of   a   cell   is \[Mg(s)+C{{u}^{2+}}(aq)\xrightarrow{{}}Cu(s)+M{{g}^{2+}}(aq).\]If the standard reduction potentials of Mg and Cu are \[-\text{ }2.37\] and \[+\text{ }0.34\,V\] respectively. The emf of the cell is

A)

\[2.03V\]

B)

\[-2.03V\]

C)

\[+2.71V\]

D)

\[-2.71V\]

View Answer
139) In the electrochemical reaction, \[2F{{e}^{3+}}+Zn\xrightarrow{{}}Z{{n}^{2+}}+2F{{e}^{2+}}\] increasing the concentration of\[F{{e}^{2+}}\]

A)

increases cell emf

B)

increases the current flow

C)

decrease the cell emf

D)

alter the pH of the solution

View Answer
140) Aluminium is obtained by

A)

reducing \[A{{l}_{2}}{{O}_{3}}\] with coke

B)

electrolysing \[A{{l}_{2}}{{O}_{3}}\]dissolved in \[N{{a}_{3}}Al{{F}_{6}}\]

C)

reducing \[A{{l}_{2}}{{O}_{3}}\]with chromium

D)

heating alumina with cryolite

View Answer
141) In the reaction, \[3A+2B\xrightarrow{{}}2C,\]the equilibrium constant \[{{K}_{c}}\]is given by

A)

\[\frac{[3A]\times [2B]}{[C]}\]

B)

\[\frac{{{[A]}^{3}}\times [B]}{[C]}\]

C)

\[\frac{{{[C]}^{2}}}{{{[A]}^{3}}\times {{[B]}^{2}}}\]

D)

\[\frac{[C]}{[3A]\times [2B]}\]

View Answer
142) 20 volume \[{{H}_{2}}{{O}_{2}}\]solution has a strength of about

A)

30%

B)

6%

C)

3%

D)

10%

View Answer
143) Permanent hardness can be removed by adding

A)

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

B)

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

C)

\[Ca(OCl)Cl\]

D)

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

View Answer
144) \[{{N}_{2}}\]and\[{{H}_{2}}\]in 1 : 3 molar ratio are heated in a closed container having a catalyst. When the following   equilibrium \[{{N}_{2}}(g)+3{{H}_{2}}(g)2N{{H}_{3}}(g)\] is attained, the total pressure is 10 atm and mole fraction of \[N{{H}_{3}}\] is 0.60. The equilibrium constant \[{{K}_{p}}\] for dissociation of \[N{{H}_{3}}\] is

A)

\[1.333\text{ }at{{m}^{-2}}\]

B)

\[0.75\text{ }at{{m}^{2}}\]

C)

\[0.75\text{ }at{{m}^{-2}}\]

D)

\[1.333\text{ }at{{m}^{2}}\]

View Answer
145) According to Le-Chatelier principle, adding heat a solid and liquid in equilibrium will cause the

A)

amount of solid to decrease

B)

amount of liquid to decrease

C)

temperature to rise

D)

temperature to fall

View Answer
146) What are the products obtained when ammonia is reacted with excess chlorine?

A)

\[{{N}_{2}}\]and \[NC{{l}_{3}}\]

B)

\[{{N}_{2}}\]and \[HCl\]

C)

\[{{N}_{2}}\] and \[N{{H}_{4}}Cl\]

D)

\[NC{{l}_{3}}\]and \[HCl\]

View Answer
147) Reaction of \[\text{HN}{{\text{O}}_{\text{3}}}\]with I, S, P and C gives respectively

A)

\[~HI{{O}_{3}},{{H}_{2}}S{{O}_{4}},{{H}_{3}}P{{O}_{4}}\]and \[C{{O}_{2}}\]

B)

\[HI{{O}_{3}},\text{ }{{H}_{2}}S{{O}_{4}},\text{ }{{H}_{3}}P{{O}_{3}},\]and\[C{{O}_{2}}\]

C)

\[HI{{O}_{2}},\text{ }{{H}_{2}}S{{O}_{4}},\text{ }{{H}_{3}}P{{O}_{4}},\]and CO

D)

\[{{I}_{2}}{{O}_{5}},S{{O}_{2}},{{P}_{2}}O,\]and \[C{{O}_{2}}\]

View Answer
148) When phenol is treated with \[CHC{{l}_{3}}\]and NaOH the product formed is

A)

benzaldehyde

B)

salicyaldehyde

C)

salicylic acid

D)

benzoicacid

View Answer
149) The Kolbes electrolysis proceeds via

A)

nucleophilic substitution mechanism

B)

electrophilic addition mechanism

C)

free radical mechanism

D)

electrophilic substitution reaction

View Answer
150) Pure methane can be produced by

A)

Wurtz reaction

B)

Kolbes electrolytic method

C)

soda lime decarboxylation

D)

reduction with \[{{H}_{2}}\]

View Answer
151) Daltons law of partial pressure is not applicable to

A)

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

B)

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

C)

\[N{{H}_{3}}+HCl\]

D)

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

View Answer
152) Positive deviation from ideal behaviour takes place because of

A)

molecular interaction between atom and\[\frac{PV}{nRT}>1\]

B)

molecular interaction between atom and \[\frac{PV}{nRT}<1\]

C)

finite size of atoms and \[\frac{PV}{nRT}>1\]

D)

finite size of atoms and\[\frac{PV}{nRT}<1\]

View Answer
153) Solubility of \[AgCl\] at \[20{{\,}^{o}}C\] is \[1.435\times {{10}^{-3}}g/L.\] The solubility product of \[AgCl\] is

A)

\[1\times {{10}^{-5}}\]

B)

\[1\times {{10}^{-10}}\]

C)

\[1.435\times {{10}^{-5}}\]

D)

\[108\times {{10}^{-3}}\]

View Answer
154) At\[\text{30}{{\,}^{\text{o}}}\text{C}\] the solubility of \[A{{g}_{2}}C{{O}_{3}}({{K}_{sp}}=8\times {{10}^{-12}})\] would be greatest in one litre of

A)

\[0.05M\,N{{a}_{2}}C{{O}_{3}}\]

B)

\[0.05\,M\,AgN{{O}_{3}}\]

C)

pure water

D)

\[0.05\,N\,N{{H}_{3}}\]

View Answer
155) Dry bleach is done by

A)

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

B)

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

C)

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

D)

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

View Answer
156) The formation of colloid from suspension is

A)

peptisation

B)

condensation

C)

sedimentation

D)

fragmentation

View Answer
157) Which of the following has maximum value of flocculating power?

A)

\[P{{b}^{2+}}\]

B)

\[P{{b}^{4+}}\]

C)

\[S{{r}^{2+}}\]

D)

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

View Answer
158) Alums are used for

A)

tanning of leather

B)

coagulation of blood

C)

purification of water

D)

all of the above

View Answer
159) Bleaching action of bleaching powder is due to the liberation of

A)

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

B)

\[OC{{l}^{-}}\]

C)

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

D)

\[C{{l}^{-}}\]

View Answer
160) Which of the following can behave as an acid as well as base?

A)

\[HCl\]

B)

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

C)

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

D)

\[N{{H}_{3}}\]

View Answer
161) Ammonium ion is

A)

a conjugate acid

B)

a conjugate base

C)

neither acid nor a base

D)

both an acid and a base

View Answer
162) In the titration of \[N{{a}_{2}}C{{O}_{3}}\]and \[HCl,\]the indicator used is

A)

methyl orange

B)

methylene blue

C)

phenolphthalein

D)

litmus

View Answer
163) 74.5 g of a metallic chloride contains 35.5 g of chlorine, the equivalent weight of the metal is

A)

19.5

B)

35.5

C)

39

D)

78.0

View Answer
164) Catalyst used in dimerisation of acetylene to prepare chloroprene is

A)

\[HgS{{O}_{4}}+{{H}_{2}}S{{O}_{4}}\]

B)

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

C)

\[C{{u}_{2}}C{{l}_{2}}+N{{H}_{4}}Cl\]

D)

\[C{{u}_{2}}C{{l}_{2}}+N{{H}_{4}}OH\]

View Answer
165) lodoform can be obtained on warming NaOH and iodine with

A)

\[C{{H}_{3}}-C{{H}_{2}}-CH(OH)C{{H}_{3}}\]

B)

\[{{(C{{H}_{3}})}_{2}}CH-\overset{O}{\mathop{\overset{|\,\,|}{\mathop{C}}\,}}\,-{{C}_{2}}{{H}_{5}}\]

C)

\[C{{H}_{3}}-\underset{O}{\mathop{\underset{|\,\,|}{\mathop{C}}\,}}\,-OC{{H}_{3}}\]

D)

\[{{(C{{H}_{3}})}_{3}}CC{{H}_{2}}OH\]

View Answer
166) The dehydration of butan-1-ol gives

A)

1-butene as the main product

B)

2-butene as the main product

C)

equal amounts of 1-butene and 2-butene

D)

2-methyl propene

View Answer
167) Methanol cannot be dried with anhydrous \[\text{CaC}{{\text{l}}_{\text{2}}}\]because

A)

\[\text{CaC}{{\text{l}}_{\text{2}}}\] dissolves in it

B)

it is not good dehydrating agent

C)

it forms as solid \[CaC{{l}_{2}}.4\text{ }C{{H}_{3}}OH\]

D)

it reacts with \[C{{H}_{3}}OH\]

View Answer
168) Excess of \[KI\]reacts with \[CuS{{O}_{4}}\]solution and then \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\]solution is added to it. Which of the statements is incorrect for this reaction?

A)

\[\text{C}{{\text{u}}_{\text{2}}}{{\text{I}}_{\text{2}}}\] is formed

B)

\[\text{Cu}{{\text{I}}_{\text{2}}}\]is formed

C)

\[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\]is oxidized

D)

Evolved \[{{I}_{2}}\] is reduced

View Answer
169) A compound X on heating gives a colourless gas. This residue is dissolved in water to obtain Y. Excess \[C{{O}_{2}}\]is bubbled through aqueous solution of Y when Z is formed. Z on gentle heating gives back X. The X is

A)

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

B)

\[Ca{{(HC{{O}_{3}})}_{2}}\]

C)

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

D)

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

View Answer
170) Red P can be obtained by white P by

A)

Heating it with a catalyst, in an inert atmosphere

B)

Distilling it in an inert atmosphere

C)

Dissolving it in \[C{{S}_{2}}\]and crystallizing

D)

Melting it and pouring the liquid into water

View Answer
171) The basicity of \[{{H}_{3}}P{{O}_{4}}\] is

A)

2

B)

3

C)

4

D)

5

View Answer
172) \[N{{H}_{3}}\] has much higher boiling point than \[P{{H}_{3}}\] because

A)

\[N{{H}_{3}}\]has larger molecular weight

B)

\[N{{H}_{3}}\] undergoes umbrella inversion

C)

\[N{{H}_{3}}\] forms hydrogen bond

D)

\[N{{H}_{3}}\]contains ionic bonds whereas \[P{{H}_{3}}\]contains covalent bonds

View Answer
173) Ethers are isomeric with

A)

aldehyde

B)

ketones

C)

both aldehyde and ketones

D)

alcohols

View Answer
174) In Williamsons synthesis

A)

an alkyl halide is treated with sodium alkoxide

B)

an alkyl halide is treated with sodium

C)

an alcohol is heated with cone. \[{{H}_{2}}S{{O}_{4}}\]at \[\text{130}{{\,}^{\text{o}}}\text{C}\]

D)

None of the above

View Answer
175) \[\text{BC}{{\text{l}}_{3}}+{{H}_{2}}O\xrightarrow{{}}X,\]the products formed in the reaction are

A)

\[~{{B}_{2}}{{O}_{3}}+HOC1\]

B)

\[{{H}_{3}}B{{O}_{3}}+HCl\]

C)

\[{{B}_{2}}{{H}_{6}}+HCl\]

D)

no reaction

View Answer
176) The borax bead test the coloured ions give characteristic coloured beads due to formation of

A)

metal borates

B)

metal metaborates

C)

metal phosphates

D)

metal tetraborates

View Answer
177) The Cannizaro reaction is not given by

A)

trimethyl acetaldehyde

B)

acetaldehyde

C)

benzaldehyde

D)

formaldehyde

View Answer
178) Self condensation of acetaldehyde, in the presence of dilute alkalies gives

A)

an acetal

B)

an aldol

C)

mesitylene

D)

propionaldehyde

View Answer
179) Which of the following is used in making printers ink, shoe polish, black varnish and paint?

A)

Lamp black

B)

Bone black

C)

Carbon black

D)

None of these

View Answer
180) Stephens reduction is used to prepare aldehyde from

A)

alcohol

B)

alkyl cyanides

C)

alkanones

D)

acid chlorides

View Answer
181) CO is poisnous gas, antidote for CO poisoning is

A)

carborundum

B)

carbogen

C)

corbonic acid

D)

pure oxygen

View Answer
182) Moderate electrical conductivity is shown by

A)

silica

B)

graphite

C)

diamond

D)

carborundum

View Answer
183) Iodine readily dissolves in potassium iodide solution giving

A)

\[{{I}^{-}}\]

B)

\[K{{I}^{-}}\]

C)

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

D)

\[K{{I}_{3}}\]

View Answer
184) Which among the following is paramagnetic?

A)

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

B)

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

C)

\[C{{l}_{2}}{{O}_{7}}\]

D)

\[C{{l}_{2}}{{O}_{6}}\]

View Answer
185) Given below are some statements concerning formic acid, which of them is true?

A)

It is weaker acid than acetic acid

B)

It is reducing agent

C)

When its calcium salt is heated, it forms a ketone

D)

It is an oxidising agent

View Answer
186) Acetic acid reacts with \[PC{{l}_{5}}\]to form

A)

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

B)

\[CHC{{l}_{2}}COOH\]

C)

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

D)

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

View Answer
187) Which of the following gives oxalic acid?

A)

Heating of acetic acid

B)

Action of nitric acid on glucose

C)

Acidic hydrolysis of cyanogen

D)

Strong heating of sodium formate

View Answer
188) Sulphur does not exist as \[{{S}_{2}}\]molecule because

A)

it is less electronegative

B)

it is not able to constitute pn - pn bonds

C)

it has ability to exhibit catenation

D)

of tendency to show variable oxidation states

View Answer
189) Polyanion formation is maximum in

A)

nitrogen

B)

sulphur

C)

oxygen

D)

boron

View Answer
190) Oleum is

A)

castor oil

B)

oil of vitriol

C)

fuming \[{{H}_{2}}S{{O}_{4}}\]

D)

none of the above

View Answer
191) Which of the following is most reactive towards electrophilic nitration?

A)

Toluene

B)

Benzene

C)

Benzoicacid

D)

Nitrobenzene

View Answer
192) Benzene diazonium chloride on reaction with phenol in weakly basic medium gives

A)

diphenyl ether

B)

p-hydroxy azobenzene

C)

chlorobenzene

D)

benzene

View Answer
193) Hinsbergs reagent is

A)

\[{{C}_{6}}{{H}_{5}}COCl\]

B)

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

C)

\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}Cl\]

D)

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

View Answer
194) Reaction of aniline with benzaldehyde is

A)

substitution

B)

addition

C)

condensation

D)

polymerization

View Answer
195) In the following reaction, X \[X\xrightarrow{\text{bromination}}Y\] \[\xrightarrow[+HCl]{NaN{{O}_{2}}}Z\xrightarrow[{{C}_{2}}{{H}_{5}}OH]{boiling}\]tribromo benzene X is

A)

benzoic acid

B)

salicylic acid

C)

phenol

D)

aniline

View Answer
196) Brown ring is made for

A)

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

B)

\[C{{l}^{-}}\]

C)

\[{{I}^{-}}\]

D)

\[B{{r}^{-}}\]

View Answer
197) Nesslers reagent is used to detect

A)

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

B)

\[PO_{4}^{3-}\]

C)

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

D)

\[NH_{4}^{+}\]

View Answer
198) Oxidation-number of sulphur in Caros acid is :

A)

+ 6

B)

+ 4

C)

+ 8

D)

+ 7

View Answer
199) Liquor ammonia is

A)

ammonium hydroxide

B)

liquified ammonia gas

C)

concentrated solution of \[N{{H}_{3}}\]in water

D)

a solution of \[N{{H}_{3}}\]in alcohol

View Answer
200) Glycerol, on heating with oxalic acid at \[110{{\,}^{o}}C\] gives

A)

ethanol

B)

methanoic acid

C)

ether

D)

acetone

View Answer
201) A force which acts against the achievement of highest possible level to population growth is known as

A)

population pressure

B)

saturation level

C)

carrying capacity

D)

environmental resistance

View Answer
202) Antibiotic flavicin is obtained from

A)

Aspergillus fiavus

B)

Aspergillus clavatum

C)

Streptomyces grieseus

D)

Streptomyces fradiae

View Answer
203) The crystal of lead zirconate is a key component of

A)

sonography

B)

electrocardiography

C)

electroencephalography

D)

magnetoencephalography

View Answer
204) Antifeedant property occurs in

A)

nicotine

B)

azadiractin

C)

rotenone

D)

cinerin

View Answer
205) Latest trend in plant disease control is

A)

chemical control

B)

biological control

C)

good manure and fertilizer

D)

breeding for disease resistance

View Answer
206) Silk is the secretion of

A)

cephalic glands

B)

gastric glands

C)

buccal glands

D)

salivary glands

View Answer
207) Endometrium is the lining of

A)

bladder

B)

vagina

C)

uterus

D)

oviduct

View Answer
208) Which animal has gone extinct in recent times in India?

A)

Acinonyx jubaCus

B)

Antilope cervicapra

C)

Rhinocerus unicomis

D)

Panthera leo

View Answer
209) What is true about cleavage in the fertilized egg in humans?

A)

It is meroblastic

B)

It starts while the egg is in fallopian tube

C)

It is identical to normal mitosis

D)

It starts when the egg reaches in uterus

View Answer
210) Climacteric is

A)

a phenomenon related to fruit ripening

B)

the condition of a plant when all its fruits are almost ripe

C)

the condition of a plant when most of its leaves have turned yellow

D)

none of the above

View Answer
211) Ethyleneisa

A)

gaseous hormone

B)

gaseous enzyme

C)

liquid - gas mixture

D)

solid hormone

View Answer
212) When the pollen tube enters through the micropyle, it is termed as

A)

chalazogamy

B)

mesogamy

C)

porogamy

D)

none of these

View Answer
213) For self pollination, flower must be

A)

unisexual

B)

bisexual

C)

monosexual

D)

asexual

View Answer
214) Which is not a gonadal hormone?

A)

Progesterone

B)

Testosrerone

C)

Adrenalin

D)

Estrogen

View Answer
215) Cochlea of mammalian internal ear is concerned with

A)

hearing

B)

balance of body posture

C)

both and

D)

perception changes of atmospheric Pressure

View Answer
216) The pan of an eye which acts like a diaphragm of a photographic camera is

A)

pupil

B)

iris

C)

lens

D)

cornea

View Answer
217) The dendrite carries impulses

A)

towards the cyton

B)

away from cyton

C)

across the body

D)

from one neuron to another

View Answer
218) Cerebrospinal fluid is present

A)

beneath the pia mater

B)

between piamater and arachnoid

C)

between arachnoid and duramater

D)

between duramater and cranium

View Answer
219) Cranium is made up of

A)

8 bones

B)

12 bones

C)

10 bones

D)

16 bones

View Answer
220) The function of surfactant is/are

A)

facilitating lung expansion

B)

maintaining the stable size of the alveoli

C)

to reduce the surface tension on the alveoli

D)

all of the above

View Answer
221) Two chief functions of the leaves are

A)

photosynthesis and respiration

B)

photosynthesis and transpiration

C)

transpiration and respiration

D)

respiration and digestion

View Answer
222) The most advanced type of inflorescence is

A)

corymb

B)

catkin

C)

spadix

D)

capitulum

View Answer
223) Carthamus tinctorius belongs to family

A)

Asteraceae

B)

Solanaceae

C)

Malvaceae

D)

Fabaceae

View Answer
224) The organism in which Krebs cycle does not occur in mitochondria is

A)

yeast

B)

E. coli

C)

Ulothrix

D)

mould

View Answer
225) The plant undergoes wilting when

A)

xylem is blocked

B)

cambium is blocked

C)

phloem is blocked

D)

some roots are reduced in number

View Answer
226) Stomata open at night and close during day in

A)

xerophytes

B)

gametophytes

C)

mesophytes

D)

hydrophytes

View Answer
227) Leucocytes (WBCs) are considered as true cells because

A)

they possess nucleus

B)

they do not contain haemoglobin

C)

they show great power of movement

D)

they are responsible for phagocytic activity

View Answer
228) Which of the following cytoplasmic granules contain histamine?

A)

Basophils

B)

Acidophils

C)

Eosinophils

D)

Neutrophils

View Answer
229) Refractory period of a muscle fibre in mammals is

A)

0.8001 sec

B)

0.002 sec

C)

0.004 sec

D)

0.005 sec

View Answer
230) During muscle contraction

A)

size of A bands remain same

B)

size of H zone becomes smaller

C)

size of T band decreases

D)

diameter of fibre increases

View Answer
231) During photosynthesis

A)

both \[C{{O}_{2}}\]and water get oxidized

B)

both \[C{{O}_{2}}\]and water get reduced

C)

water is reduced and \[C{{O}_{2}}\]is oxidized

D)

\[C{{O}_{2}}\]gets reduced and water gets oxidized

View Answer
232) The order of occurrence of the cytochromes in the \[{{F}_{1}}\]particle is

A)

\[cyt-b,cyt-c,cyt-acyt\text{ }{{a}_{3}}\]

B)

\[cyt-c,cyt-b,cyt-a-cyt\text{ }{{a}_{3}}\]

C)

\[cyt-a,\text{ }cyt-b,cyt-ccyt\text{ }{{a}_{3}}\]

D)

\[cyt-,cyt-a,cyt-ccyt\text{ }b\]

View Answer
233) Dispersal of fruits in Opium (poppy) occurs through shaking by wind by

A)

explosive mechanism

B)

parachute mechanism

C)

censer mechanism

D)

jacular mechanism

View Answer
234) Storage leaves occur in

A)

Allium

B)

Zizyphus

C)

TriCicum

D)

Trapa

View Answer
235) Tube-within-a-tube body plan is shown by

A)

coelenterates

B)

platyhelminthes

C)

aschelminthes (nemathelminthes)

D)

porifers

View Answer
236) True coelom appeared first in the course of evolution in

A)

Aschelminthes

B)

Chordata

C)

Echinodermata

D)

Annelida

View Answer
237) Which of the following is not found in vertebrates?

A)

Bilateral symmetry

B)

Gill opening

C)

Body scales

D)

Cnidoblasts

View Answer
238) The cell organelles are found in

A)

bacterial cells

B)

cyanobacterial cells

C)

prokaryotic cells

D)

eukaryoric cells

View Answer
239) Intracellular compartments are not found in the cells of

A)

lower plants

B)

prokaryotes

C)

higher plants

D)

eukaryotes

View Answer
240) Spindle chromosomes have

A)

centriole

B)

kinetochore

C)

chromocentre

D)

chromomere

View Answer
241) Adrenal gland is derived from

A)

ectoderm

B)

mesoderm

C)

endoderm

D)

both and

View Answer
242) Which endocrine gland becomes inactive in old age?

A)

Adrenal

B)

Pineal

C)

Thymus

D)

Pituitary

View Answer
243) The process by which chloride ions pass into RBC and bicarbonate ions pass out is called

A)

bicarbonate shift

B)

Chloride shift

C)

buffer system

D)

enzyme shift

View Answer
244) Squeezing of leucocytes out from the endothelium of capillaries to fight foreign agents is known as

A)

haemolysis

B)

diapaedesis

C)

phagocytosis

D)

rouleaux

View Answer
245) Which organ is considered as Graveyard of RBC where most of them are destroyed by macrophages?

A)

Red bone marrow

B)

Spleen

C)

Kidney

D)

Intestine

View Answer
246) When one organism is benefited without affecting the other, it is called

A)

parasitism

B)

commensalism

C)

saprophyrism

D)

symbiosis

View Answer
247) A branch of science in which forest crop can be grown in desired pattern is

A)

Histology

B)

Horticulture

C)

Pisiculture

D)

Siliviculture

View Answer
248) Which of the following factor is biotic?

A)

Photoperiod

B)

\[C{{O}_{2}}\]content to the soil

C)

Texture and porosity of soil

D)

Rainfall

View Answer
249) The pyramid of energy in a forest ecosystem is

A)

always upright

B)

always inverted

C)

both and

D)

none of the above

View Answer
250) Lichens are important in the studies on atmospheric pollution because they

A)

can grow in polluted atmosphere

B)

can readily multiply in polluted atmosphere

C)

efficiently purify the atmosphere

D)

are very sensitive to pollutants tike sulphur dioxide

View Answer
251) 9:3:3:1 ratio is modified to 9 : 7 ratio due to

A)

complementary gene

B)

epistatic gene

C)

hypostatic gene

D)

supplementary gene

View Answer
252) The largest quantity of air that can be expired after a maximum inspiratory effort is

A)

residual volume

B)

tidal volume

C)

vital capacity of lung

D)

lung volume

View Answer
253) Shifting of ammonotelism to ureotelism is seen in

A)

fishes

B)

frog

C)

protopterus

D)

snake

View Answer
254) The amount of liquid filtered by glomeruli of kidney in 24 hours period is

A)

170 L

B)

100 L

C)

200-250 cc

D)

500-1000 cc

View Answer
255) The map distance between the genes A and B is 3 units, between B and C is 10 units and between C and A is 7 units. The order of the genes in a linkage map constructed on the above data would perhaps be

A)

A, B, C

B)

A, C, B

C)

B, C, A

D)

B, A, C

View Answer
256) In the lactose operon of Escherichia coli what is the function of promoter?

A)

Binding of Gyrase enzyme

B)

Binding of RNA polymerase

C)

Codes for RNA polymerase

D)

Processing of messenger RNA

View Answer
257) One of the following is sex-influenced character

A)

Appearance of beard

B)

Baldness in male

C)

Docile behaviour of female

D)

Low BMR in female

View Answer
258) Polymerase chain reaction is most useful in

A)

DNA synthesis

B)

DNA amplification

C)

protein synthesis

D)

amino acid synthesis

View Answer
259) In mitosis the duplication of chromosomes occurs during

A)

early prophase

B)

late prophase

C)

interphase

D)

late telophase

View Answer
260) Bivalents in meiosis are

A)

tetrad

B)

pairs of non-homologous chromosomes

C)

pairs of several chromatids

D)

pairs of homologous chromosomes

View Answer
261) Which one of the following is also called halophiles?

A)

Eubacteria

B)

Actinomycetes

C)

Archaebacteria

D)

Cyanobacteria

View Answer
262) Sex factor in bacteria is

A)

F- replicon

B)

chromosomal replicon

C)

RNA

D)

sex pillies

View Answer
263) Vascular bundles of roots are

A)

conjoint

B)

concentric

C)

bicollateral

D)

radial

View Answer
264) Ectophloic siphonostele is found in

A)

Osmunda and Equisetum

B)

Marsilea and Botrychium

C)

Adiantum and Cucurbitaceae

D)

Dicksonia and Maiden hair fern

View Answer
265) Adipocytes are mainly found in

A)

bones

B)

cartilages

C)

connective tissue

D)

nerves

View Answer
266) Arbor-vitae is composed of

A)

grey matter

B)

neurogleal cells

C)

white matter

D)

all of the above

View Answer
267) The main difference between white and yellow Fibres is of

A)

protein

B)

color of fibres

C)

both and

D)

none of the above

View Answer
268) Lenticular transpiration takes place in

A)

fruits

B)

woody stems

C)

leaves

D)

all of these

View Answer
269) In which of the following process 36 ATP molecules are produced by per hexose molecule?

A)

Glycolysis

B)

Krebs cycle

C)

Direct oxidation pathway

D)

None of the above

View Answer
270) The value of RQ at compensation point is

A)

unity

B)

infinity

C)

>1

D)

zero

View Answer
271) The vitamin present in Coenzyme is

A)

\[{{B}_{2}}\]

B)

niacin

C)

pyridoxine

D)

pantothenic acid

View Answer
272) Symbiotic bacteria present in intestine of most primates, which synthesize certain vitamins are

A)

Entamoeba histolytica

B)

Entamoeba coli

C)

Entamoeba gingivalis

D)

None of the above

View Answer
273) In which form \[C{{O}_{2}}\]is mostly carried by blood?

A)

Bicarbonates

B)

Carbonic acid

C)

Carbamino compound

D)

Carboxyhaemoglobin

View Answer
274) Which artery is absent in frog?

A)

Right systemic arch

B)

Phrenic artery

C)

Carotid artery

D)

Renal artery

View Answer
275) The number of RBCs in man increases if he lives at a higher altitude, this is because

A)

there is more oxygen at the mountains

B)

there is less oxygen at mountains

C)

more heat is required to be produced in the body for keeping warm

D)

there are no germs in the air in mountain

View Answer
276) Foramen magnum is situated in

A)

buccal cavity

B)

base of skull

C)

left auricle

D)

vertebrae

View Answer
277) The genes and splenium in brain are associated with

A)

cerebellum

B)

cerebrum

C)

medulla oblongata

D)

vermis

View Answer
278) Scala vestibuli is connected with

A)

fenestra rotundus

B)

fenestra ovalis

C)

scala tympani

D)

scala media

View Answer
279) The friction between the eyelids and the cornea is avoided by the secretion of

A)

lachrymal glands

B)

conjunctiva and eyelids

C)

hardarian glands

D)

Meibomian glands

View Answer
280) Embryo sac is

A)

microgametophyte

B)

microsporangium

C)

megagametophyte

D)

megasporangium

View Answer
281) Sprouting of potato can be prevented in storage by

A)

maleic hydrazide

B)

gibberellins

C)

indole acetic acid

D)

cytokinins

View Answer
282) Tendrils exhibit/twining of tendrils is due to

A)

thigmotropism

B)

seismonasty

C)

heliotropism

D)

diageotropism

View Answer
283) Flowering dependent on cold treatment is

A)

cryotherapy

B)

cryogenics

C)

cryoscopy

D)

vernalisation

View Answer
284) Noncleidoic eggs occur in

A)

birds

B)

Fish

C)

reptiles

D)

platypus

View Answer
285) Human sperm was discovered by

A)

Leeuwenhoek

B)

Aristotle

C)

Graaf

D)

Pander

View Answer
286) Sunken stomata occur in

A)

xerophytes

B)

hydrophytes

C)

mesophytes

D)

opsanophytes

View Answer
287) Soil carried by gravity is

A)

alluvial

B)

eolian

C)

colluvial

D)

glacial

View Answer
288) Metha Jahar which is useful in rheumatism is obtained from

A)

Aconitum napellus

B)

Colchicum

C)

Exogonium

D)

Licorice

View Answer
289) Long fibres of cotton seed are known as

A)

coir

B)

fuzz

C)

lint

D)

flax

View Answer
290) The pioneer country in the production of fuel alcohol is

A)

Saudi Arabia

B)

Iran, Iraq

C)

Brazil

D)

Japan

View Answer
291) Which of the following gland is often referred in relation with AIDS?

A)

Thyroid

B)

Thymus

C)

Adrenal

D)

Pancreas

View Answer
292) Ball and socket joints can be seen in

A)

wrist

B)

fingers

C)

neck

D)

shoulders

View Answer
293) Most simple amino acid is

A)

lysine

B)

glycine

C)

aspartic acid

D)

nucleic acid

View Answer
294) What is the correct sequence of thickness of muscles layers in the stomach of human beings?

A)

Circular\[\to \]Oblique\[\to \]Longitudinal

B)

Oblique\[\to \]Longitudinal\[\to \]Circular

C)

Longitudinal\[\to \]Circular\[\to \]Oblique

D)

None of the above

View Answer
295) Blind sac body plan is shown by

A)

roundworms

B)

annelids

C)

coelenterates

D)

arthropods

View Answer
296) The typhlosole in earthworm is related with

A)

excretion

B)

absorption

C)

respiration

D)

reproduction

View Answer
297) Kaziranga wild life sanctuary is famous for

A)

tiger

B)

musk deer

C)

elephant

D)

rhino

View Answer
298) The famous Chipko Movement was started by

A)

Bahuguna

B)

Rajeev Gandhi

C)

Indira Gandhi

D)

Salim Ali

View Answer
299) Nif genes occur in

A)

Rhizobium

B)

Aspergillus

C)

Penicillium

D)

Streptococcus

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300) Kochs postulates are not applicable to

A)

TB

B)

leprosy

C)

cholera

D)

diphtheria

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