Question

B. Tick (v) the correct answer.
1. An exhaustible natural resource is
(a) water
(b) air
(c) sunlight
(d) coal
2. The purest form of coal is
(a) peat
(b) bituminous coal
(c) anthracite
(d) lignite
3. The substance having the highest calorific value is
(a) peat
(b) lignite
(c) anthracite
(d) wood
4. The major constituent of natural gas is/are
(a) butane
(b) methane
(c) methane + hydrogen
(d) ethane
Teacher's Signature​

Answer 1

Answer:

1. coal , 2. anthracite , 3. wood , 4. methane.