251: Assertion (A) :
The surface winds spiral inwards upon the centre of the cyclone.
Reason (R) :
Air descends in the centre of the cyclone.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
252: Match List I (Industrial processes) with List II (Industry with which associated) and select the correct answer using the codes given below the Lists :
List I------------------ List II
I. Cracking-------------(A) Rubber
II. Smelting-------------(B) Petroleum
III. Hydrogenation-------(C) Copper
IV. Vulcanization---------(D) Edible fats
Codes:
(a) I-C, II-B, III-A, IV-D
(b) I-B, II-C, III-D, IV-A
(c) I-B, II-C, III-A, IV-D
(d) I-C, II-B, III-D, IV-A