Question

c. One of the following is not an exhaustible source of energy. This one is
i) natural gas ii) petroleum gas
iii) coal gas iv) biogas
d. Which one of the following is used as reducing agent in extraction of iron metal?
i) coal
ii) bitumen
iii) charcoal
iv) coke
e. which is the major component of CNG?
1) ethane ii) propane
ill)methane iv)butane
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Answer 1

HEY MATE

c. biogas

d. bitumen

e. methane

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Answer 2

1.natural gas

2.The common ores of iron are both ironoxides, and these can be reduced toiron by heating them with carbon in the form of coke. Coke is produced by heating coal in the absence of air. Coke is cheap and provides both thereducing agent for the reaction and also the heat source.

3.methane