61: Arrange the following three atmospheric layers starting from the surface of the earth
A. Stratosphere
B. Ionosphere
C. Troposphere
(a) A, B, C
(b) C, A, B
(c) A, C, B
(d) C, B, A
62: The population growth rate in Kerala is the lowest among major Indian states. Which one of the following is the most widely accepted reason for this ?
(a) Kerala has made the highest investment in family planning
(b) Kerala has the highest literacy rate in India
(c) Kerala has invested heavily in promoting literacy and public health and placed high priority on social policies
(d) The population pyramid in Kerala has relatively fewer women in the reproductive age-group
63: 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
64: Cobalt-60 is commonly used in radiation therapy because it emits
(a) alpha rays.
(b) beta rays.
(c) gamma rays.
(d) X-rays.
65: With reference to inflation in India, which of the following statements is correct?
(a) Controlling the inflation in India is the responsibility of the Government of India only
(b) The Reserve Bank of India has no role in controlling the inflation
(c) Decreased money circulation helps in controlling the inflation
(d) Increased money circulation helps in controlling the inflation