2166: Which of the following is not an element of the bone?
(a) Calcium
(b) Phosphorus
(c) Carbon
(d) Oxygen
2167: The following were famous scholars in ancient India:
I. Ashvaghosh
II. Nagarjuna
III. Vasumitra
IV. Buddhaghosa
Which of them was/were contemporary of Kanishka?
(a) I, II, III, IV
(b) I, III, IV
(c) I, II
(d) I, II, III
2168: A and B can do a piece of work in 4 days. If A can do it alone in 12 days, how much time B will take to finish it alone?
(a) 4 days
(b) 6 days
(c) 8 days
(d) 10 days
2169: Who among the following discovered heavy water?
(a) Joseph Priestley
(b) Heinrich Hertz
(c) H. C. Urey
(d) G. Mendel
2170: The next pair of letters in the series AZ, CX, FU, ...... is
(a) JQ
(b) KP
(c) IR
(d) IV