56: Which one of the following is NOT radioactive ?
(a) Astatine
(b) Francium
(c) Tritium
(d) Zirconium
57: Consider the following statements regarding "booth capturing" in an election:
1. It has been defined in the Constitution of India after the 61st Amendment.
2. It includes the seizure of and taking possession of a polling booth to prevent the orderly conduct of elections.
3. It is also committed when any elector is threatened and prevented from going to the polling station to cast his vote.
4. It has been declared a cognisable offence punishable by imprisonment.
Of these statements
(a) 2, 3 and 4 are correct
(b) 1, 2 and 3 are correct
(c) 2 and 3 are correct
(d) 1, 2, 3 and 4 are correct
58: In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
(a) insects and fungi
(b) limited sunlight and paucity of nutrients
(c) water limits and fire
(d) None of the above
59: The difference between the simple interest received from two banks on Rs. 500 for two years is Rs. 2.50. What is the difference between their rates ?
(A) 0.25%
(B) 0.5%
(C) 1%
(D) 2.5%
60: La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino?
1. La Nina is characterized by unusually cold ocean temperature in equatorial Indian Ocean whereas El Nino is characterized by unusually warm ocean temperature in the equatorial Pacific Ocean.
2. El Nino has adverse effect on south-west monsoon of India, but La Nina has no effect on monsoon climate.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2