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16.  The Nobel Prize for Physiology or medicine 2010 was awarded for in vitro fertilization in humans to :

a

Thomas A. Steitz, A.E.Yonath, and Richard F. Heck.

b

Robert G.Edwards

c

Elizabeth H.Blackburn and C.W. Greider.

d

Roger D. Kornberg.

Answer & Explanation
 Answer : Option B Explanation :

17.  Consider the following statements:
1.In our houses, the current in A.C. electricity line changes direction sixty times per second.
2.The frequency of alternating voltage applied is 60 Hz. Which of the above statements is/are true?

a

1 only

b

2 only

c

Neither 1 nor 2

d

Both

Answer & Explanation
 Answer : Option B Explanation :

18.  Internal ear is filled with

a

lymph

b

endolymph

c

perilymph

d

both (a ) and ( b)

Answer & Explanation
 Answer : Option D Explanation :

19.  The gravitational force with which the sun attracts the earth
1.is less than the force with which the earth attracts the sun
2.is the same as the force with which earth attracts the sun
3.is more than the force with which the earth attracts the sun
4.varies with the distance between them Which of the above statements is/are correct?

a

1 only

b

1 and 4

c

2 and 4

d

3 and 4

Answer & Explanation
 Answer : Option C Explanation :

20.  Liraglutide has recently been approved as a drug, it has been developed to treat

a

obesity

b

leukemia

c

pancreatic cancer

d

breast cancer

Answer & Explanation
 Answer : Option A Explanation :

21.  A circular loop of wire is rotated at constant angular speed about an axis that makes an angle q with a constant magnetic field as shown in figure. The emf induced in the coil will be zero at all times if

a

q = 45°

b

will never be zero

c

q = 0

d

q = 90°

Answer & Explanation
 Answer : Option C Explanation :

22.  Pepsin requires acidic medium for its optimal enzymatic activity. The cells of the gastric glands that secrete HCl are:
1.goblet cells
2.parietal cells
3.chief cells
4.oxyntic cells

a

2, 4

b

3, 4

c

2, 3

d

1, 2

Answer & Explanation
 Answer : Option C Explanation :

23.  When light enters a closed room through a small hole in the door, the image of an outside building appears as inverted on the opposite wall. This is because

a

The hole acts as a convex lens

b

The hole acts as a concave lens

c

Of rectilinear propagation of light

d

Light takes curvature at the edges of the hole

Answer & Explanation
 Answer : Option D Explanation :

24.  Acid and alcohol react to form

a

Acid anhydride and water

b

Ester and water

c

Ketone and water

d

Aldehyde and water

Answer & Explanation
 Answer : Option B Explanation :

25.  A medicinal substance given against the intake of poisons or to prevent a disease from having an effect is known as

a

antibiotic

b

antibody

c

antigen

d

antidote

Answer & Explanation
 Answer : Option D Explanation :

26.  The compounds responsible for causing 'socks' to stink are
1.Butyric acid
2.Dimethyl sulphide
3.2-Heptanone
4.2-Nonanone
5. 2-Octanone Which compound(s) is/are present in the 'socks stink'?

a

1, 4 and 5

b

1, 2, 3, 4 and 5

c

1, 3, 4 and 5

d

1, 2, 3 and 5

Answer & Explanation
 Answer : Option B Explanation :

27.  The most malleable metal is

a

iron

b

gold

c

silver

d

platinum

Answer & Explanation
 Answer : Option B Explanation :

28.  An energy source will supply a constant current into the load if its internal resistance is

a

Very large as compared to the load resistance

b

Non-zero but less than the resistance of the load

c

Zero

d

Equal to the resistance of the load

Answer & Explanation
 Answer : Option C Explanation :

29.  Consider the following statements:
1.The apparent weight of a body floating in a liquid is zero.
2.The weight of the liquid displaced by the immersed part of the body equals its weight. Which of the above statements is/are true?

a

Neither 1 nor 2

b

1 only

c

2 only

d

Both 1 and 2

Answer & Explanation
 Answer : Option D Explanation :

30.  Containers for carrying strong acids are made of

a

lead

b

copper

c

brass

d

platinum

Answer & Explanation
 Answer : Option A Explanation :

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