Question

Tick ) the correct option.
1. The major constituents of coal gas are
(a) carbon monoxide + methane
(b) carbon monoxide + hydrogen
(c) methane + hydrogen + carbon monoxide (d) methane + hydrogen
2. The greenhouse effect is due to an excessive emission of
(a) carbon dioxide
(b) oxides of nitrogen
(c) oxides of carbon
(d) oxides of sulphur
3. The substance having the highest calorific value is
(a) lignite (b) anthracite
(c) peat
(d) wood
4. The substance having the highest calorific value is
(a) oxygen (b) LPG
(c) coal gas (d) hydrogen
5. The purest form of coal is
(a) anthracite
(b) lignite
(c) peat
(d) bituminous coal
6. The energy stored in the fossil fuels is
(a) chemical energy
(b) electrical energy
(c) heat energy
(d) mechanical energy
7. Kerosene is better than gasoline for use in an oil lamp because it is
(a) more volatile
(b) cheaper
(c) less volatile
(d) heavier
Class-8
Car​

Answer 1

Answer: 1. (C)

2. (A)

3. (C)

4. (C)

5. (A)

6. (A)

7. (C)

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Answer 2

Answer:

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