1636: Which one of the following is a non-metallic mineral?

(a) Manganese

(b) Magnesium

(c) Gypsum

(d) Bauxite
1637: Consider the following statements:

1. As per law, the Compensatory Afforestation Fund Management and Planning Authority exists at both National and State levels.
2. Peoples participation is mandatory in the compensatory afforestation programmes carried out under the Compensatory Afforestation Fund Act, 2016.

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
1638: Doldrums refer to:

(a) A belt of calm and light variable winds near the equator

(b) A particular area in the centre of the Pacific Ocean

(c) The region of the upper atmosphere extending upward from the tropopause to about 20 kms. above the earth

(d) None of these
1639: Which one of the following chemicals is responsible for the depletion of ozone layer in the atmosphere?

(a) Chlorofluorocarbons

(b) Nitrous oxide

(c) Sulphur dioxide

(d) Carbon dioxide
1640: Consider the following kinds of organisms:

1. Bacteria

2. Fungi

3. Flowering Plants

Some species of which of the above kinds of organisms are employed as biopesticides?

(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3