2631: How can the height of a person who is six feet tall be expressed (approximately) in nanometres?
(a) 183 x 106 nanometres
(b) 183 x 107 nanometres
(c) 234 x 106 nanometres
(d) 234 x 107 nanometres
2632: When compared to the mammals, birds are less sensitive to temporary deprivation of water, because:
(a) The water requirement per unit weight is less in birds than in mammals.
(b) Absorption of water from the gut is more efficient in birds than in mammals.
(c) Urea excretion in mammals entails a greater loss of water than that in birds.
(d) None of these
2633: The given map relates to :
(a) Kanishka at the time of his death
(b) Samudragupta after the close of his South Indian campaign
(c) Ashoka towards close of his reign
(d) Empire of Thaneswar on the eve of Harsh's accession
2634: NASA'S Deep Impact space mission was employed to take detailed pictures of which comet nucleus ?
(A) Hale Bopp
(B) Halley's Comet
(C) Hyakutake
(D) Tempel 1
2635: Contour bunding is a method of conservation used in
(a) desert margins, liable to strong wind action
(b) low flat plains, close to stream courses, liable to flooding
(c) scrublands, liable to spread of weed growth
(d) None of the above