Question

Biogas is an excellent fuel because

A. It burns with smoke and leaves residue like ash as in wood
B. The slurry left behind is excellent manure
C. It burns without smoke and not leaves residue like ash as in wood
D. It undergoes incomplete combustion​

Answer 1

Answer:

(a) it burns with smoke and leaves residue like ash as in wood

Answer 2

Concept:

In many nations, biogas has a long history of use as a fuel for lighting and cooking. Because it contains a mixture of roughly 50–70% methane, 25–45% carbon dioxide, and traces of other gases, this fuel is regarded as being of exceptional quality. Manure and other organic materials that decompose anaerobically are used to make the gas. Biogas is a better allowed fuel because it is more efficient, cost-effective, cheap to produce, has easy access to raw materials, and is environmentally friendly. Because biogas combustion does not produce a lot of pollutants, producing biogas facilitates the simple disposal of organic wastes and is environmentally benign. It is a clean, renewable energy source with a high calorific value.

Given: Biogas is an excellent fuel

To find: the correct option out of the 4 options

Solution: Biogas is an excellent fuel because it burns without smoke and not leaves residue like ash as in wood,

Therefore, the correct option is option C.

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