Question

A
B
(a) Biogas
(b) Natural gas
(c) Petroleum gas
(d) Kerosene
(i) A liquid fraction from the refining of petroleum
(ii) The lowest-boiling fraction in petroleum refining
(iii) Accumulated in petroleum wells
(iv) Anaerobic fermentation of cattle dung​

Answer 1

Answer:

2-b

1-c

3-a

4-d

Explanation:

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