Question

i) When coal burns in air then
a) Carbon dioxide is formed
b) Sulphur dioxide is formed
c) Carbon monoxide is formed
d. Hydrogen gas is formed
ii) Full form of CNG
a) Carbon non-gaseous
b) Compressed Natural gas
c) Compressed Nitrogen Gas
d) None of these
iii) Nature of Sulphur dioxide gas
a) Cleaner gas
b) suffocating gas
c) lighter gas
d) none of these​

Answer 1

Answer:

i. a.

ii. b.

iii. b.

Explanation:

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