Question

Not a constituent of biogas? **** a) carbon dioxide b) hydrogen c) methane d) nitrogen dioxide

Answer 1

Answer:

Nitrogen Dioxide is not the constituent of biogas .And others are the major constituent of biogas.

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Answer 2

(c) $\huge\bf\pink{Methane}$

$\large\bf\red{Explanation✓}$

Methane gas is the main product of biogas. Around 70% of the gas produced is methane and remaining will be ammonia, carbon-di-oxide.