46: Which of the following statements are correct about the deposits of methane hydrate?
1. Global warming might trigger the release of methane gas from these deposits.
2. Large deposits of methane hydrate are found in Arctic Tundra and under the seafloor.
3. Methane in atmosphere oxidizes to carbon dioxide after a decade or two.
Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
47: The Nagara, the Dravida and the Vesara are the
(a) three main racial groups of the Indian subcontinent
(b) three main linguistic divisions into which the languages of India can be classified
(c) three main styles of Indian temple architecture
(d) three main musical Gharanas prevalent in India
48: In India, during the last decade the total cultivated land for which one of the following crops has remained more or less stagnant ?
(a) Pulses
(b) Oilseeds
(c) Rice
(d) Sugarcane
49: In India, who is the Chairman of the National Water Resources Council?
(a) Prime Minister
(b) Minister of Water Resources
(c) Minister of Environment and Forests
(d) Minister of Science and Technology
50: In India people suffer from Anaemia due to lack of:
(a) Iron
(b) Iodine
(c) Calcium
(d) Potassium