806: Why does the Government of India promote the use of 'Neem-coated Urea' in agriculture?
(a) Release of Neem oil in the soil increases nitrogen fixation by the soil microorganisms
(b) Neem coating slows down the rate of dissolution of urea in the soil
(c) Nitrous oxide, which is a greenhouse gas, is not at all released into atmosphere by crop fields
(d) It is a combination of a weedicide and a fertilizer for particular crops
807: The Supreme Court of India tenders advice to the President on a matter of law or fact
(a) on its own initative
(b) only if he seeks such advice
(c) only if the matter relates to the Fundamental Rights of citizens
(d) only if the issue poses a threat to the unity and integrity of the country
808: Two packs of cards are thoroughly mixed and stuffed and two cards are drawn at random, one after the other. What is the probability that both of them are Jacks?
(a) 1/13
(b) 2/13
(c) 7/1339
(d) 1/169
809: Chemical composition of pearl is:
(a) Calcium carbonate
(b) Calcium carbonate and magnesium carbonate
(c) Calcium sulphate
(d) Calcium chloride
810: In binary system, 1010 is equivalent to
(a) 8
(b) 9
(c) 10
(d) 11