4181: Who among the following discovered heavy water?

(a) Joseph Priestley
(b) Heinrich Hertz
(c) H. C. Urey
(d) G. Mendel
4182: The Ninth Schedule to the Indian Constitution was added by

(a) First Amendment
(b) Eighth Amendment
(c) Ninth Amendment
(d) Forty second Amendment
4183: The pituitary gland by virtue of its tropic hormones controls the secretory activity of other endocrine glands. Which one of the following endocrine glands can function independent of the pituitary gland ?

(a) Thyroid
(b) Gonads
(c) Adrenals
(d) Parathyroid
4184: The winter rain in Madras is caused by:

(a) South-West Monsoons

(b) North-East Monsoons

(c) Intense land and sea breezes

(d) Cyclonic winds in the Bay of Bengal
4185: Assertion (A):
India's software exports increased at an average growth rate of 50% since 1995-96.

Reason (R):
Indian software companies were cost-effective and maintained international quality.

(a) Both A and R are individually true, and R is the correct explanation of A
(b) Both A and R are individually true, but R is NOT a correct explanation of A
(c) A is true, but R is false
(d) A is fasle, but R is true