2081: In the sequence 462, 420, 380, X, 306. X stands for
(a) 352
(b) 342
(c) 332
(d) 322
2082: Which feature of some, species of blue-green algae helps promote them as bio-fertilizers?
(a) They convert atmospheric methane into ammonia which the crop plants can absorb readily
(b) The induce the crop plants to produce the enzymes which help convert atmospheric nitrogen to nitrates
(c) They have the mechanism to convert atmospheric nitrogen into a form that crop can absorb readily
(d) The induce the roots of the crop plants to absorb the soil nitrates in larger quantities
2083: With reference to the Constitution of India, prohibitions or limitations or provisions contained in ordinary laws cannot act as prohibitions or limitations on the constitutional powers under Article 142. It could mean which one of the following?
(a) The decisions taken by the. Election Commission of India while discharging its duties cannot be challenged in any court of law.
(b) The Supreme Court of India is not constrained in the exercise of its powers by the laws made by Parliament.
(c) In the event of grave financial crisis in the country, the President of India can declare Financial Emergency without the counsel from the Cabinet.
(d) State Legislatures cannot make laws on certain matters without the concurrence of Union Legislature.
2084: A body partially floats in water when:
(a) The volume of the displaced liquid is equal to the volume of the body
(b) The volume of the displaced liquid is greater than the volume of the body
(c) The weight of the displaced water is equal to the weight of the body
(d) The weight of the displaced water is greater than the weight of the body
2085: Which one of the following is the correct sequence of the states (labelled 1, 2, 3 and 4) of India shown on the map in descending order in terms of their available ground water resources for irrigation ?
(a) 3, 4, 1, 2
(b) 3, 4, 2, 1
(c) 4, 3, 1, 2
(d) 4, 3, 2, 1