81: Chlorination is a process used for water-purification. The disinfecting action of chlorine is mainly due to
(a) The formation of hydrochloric acid when chlorine is added to, water
(b) The formation of hypochlorous acid when chlorine is added to water
(c) The formation of nascent oxygen when chlorine is added to water
(d) The formation of hydrogen when chlorine is added to water
82: The partition of Bengal was undertaken with the view of:
(a) Suppressing the revolt arisen
(b) Satisfying the Hindus and the Muslims
(c) Meeting the demand by the Hindus and the Muslims for a separate State
(d) Dividing the Hindus of the West Bengal and increasing Hindu-Muslim tensions
83: What was the purpose of the Operation Sukoon launched by the Government of India ?
(A) Providing a relief package to farmers after a spate of suicides by other farmers in Andhra Pradesh
(B) Assisting United Nations in its efforts to help the civil war vitims in the Darfur refion of North Africa
(C) Helping Indonesia in its efforts to rehabilitate the victims of earthquake in that country
(D) Evacuating the Indian Nations from Lebanon during the conflict in the Middle East.
84: 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
85: When it is noon along 82° 30' E longitude along what degree of longitude it will be 6.30 am ?
(a) along 165° E
(b) along 67°30' W
(c) 0° E or W
(d) along 82° 30' W