1966: Which of the following are known as coastlines of submergence?

(a) Uplifted lowland

(b) Ria Coasts

(c) Emergent upland

(d) None of the above
1967: The varieties of corn can be improved by which of the following methods?

(a) Dihybrid cross

(b) Back cross

(c) Double cross

(d) Natural selection
1968: Write in chronological order"

(i) Man's landing on moon.

(ii) Discovery of radio activity.

(iii) First nuclear explosion.

(iv) Launching of first satellite by India.

(a) (iii), (ii), (iv), (i)

(b) (i), (ii), (iii), (iv)

(c) (iii), (i), (iv), (ii)

(d) (ii), (iii), (i), (iv)
1969: Guinea pigs used in medical research are:

(a) Rodents

(b) Black swine

(c) Stocky and brown in colour

(d) Found in Asia only
1970: What is done to raise the dough while making bread?

(a) Alcohol is added

(b) Yeast is added

(c) Carbon dioxide is passed

(d) Air is passed