641: In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be the potential sites for carbon sequestration?
1. Abandoned and uneconomic coal seams
2. Depleted oil and gas reservoirs
3. Subterranean deep saline formations
Select the correct answer using the code given below:
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
642: The purest form of water is obtained from:
(a) A deep tube well
(b) A running stream
(c) Hot water spring
(d) Heavy rains
643: To check the expansion of Thar desert which of the following measures should be used?
(a) Construction of dams
(b) Afforestation
(c) Construction of canals
(d) Artificial rain
644: Who was the first Indian actress to receive the Padma Shri Award ?
(a) Samita Patil
(b) Nargis Dutt
(c) Meena Kumari
(d) Madhubala
645: Who of the following Prime Ministers sent Cripps Mission to India?
(a) Neville Chamberlain
(b) Stanley Baldwin
(c) Winston Churchill
(d) James Ramsay MacDonald