4041: The Brahmaputra, Irrawady and Mekong rivers originate in Tibet and flow it through narrow and parallel mountain ranges in their upper reaches. Of these rivers, Brahmaputra makes a "U" turn in its course to flow into India. This "U" turn is due to
(a) Uplift of folded Himalayan series
(b) Syntaxial bending of geologically young Himalayas
(c) Geo-tectonic disturbance in the tertiary folded mountain chains
(d) Both (a) and (b) above
4042: Dry ice is:
(a) Solid carbon dioxide
(b) Ice dust
(c) Liquified nitrogen
(d) Liquified hydrogen
4043: If x and y are positive integers such that (3x + 7y) is a multiple of 11, then which of the followings are divisible by 11?
4044: Who had founded the Asiatic Society of Bengal in 1784?
(a) Lord Clive
(b) Lord Warren Hastings
(c) Queen Victoria
(d) William Jones
4045: During a thunderstorm, the thunder in the skies is produced by the
1. meeting of cumulonimbus clouds in the sky
2. lightning that separates the nimbus clouds
3. violent upward movement of air and water particles
Select the correct answer using the codes given below.
(a) 1 only
(b) 2 and 3
(C) 1 and 3
(d) None of the above produces the thunder