491: A boat which has a speed of 5 km/hr in still water crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water in km/hr is
(a) 1
(b) 3
(c) 4
(d)
492: The Genetic Engineering Approval Committee, whose permission is required for cultivation of any genetically modified crop such as Bt-Cotton in India, is under the Union Minister of
(a) Agriculture
(b) Environment and Forests
(c) Commerce and Industry
(d) Rural Development
493: Match List I with List II and select the correct answer using the codes given below the Lists :
List I---------------- List II
(Industries)--------------- (Industrial Centres)
I. Pearl fishing--------- (A) Pune
II. Automobiles---------- (B) Tuticorin
III. Ship-building----------- (C) Pinjore
IV. Engineering goods---------- (D) Marmagao
Codes:
(a) I-B, II-A, III-D, IV-C
(b) I-B, II-A, III-C, IV-D
(c) I-A, II-B, III-D, IV-C
(d) I-A, II-B, III-C, IV-D
494: There are three tables containing two drawers each. It is known that one of the table contains a silver coin in each of its drawers, another table contains a gold coin in each drawer while the third table contains a silver coin in one drawer and a gold coin in the other. One of the drawers of a table is opened and found to contain a silver coin. What is the probability that the other drawer of that table contains a gold coin ?
(a) 1
(b) 0.5
(c) 0.25
(d) 0.75
495: To obtain full benefits of demographic dividend, what should India do?
(a) Promoting skill development
(b) Introducing more social security schemes
(c) Reducing infant mortality rate
(d) Privatization of higher education