Question

Name four gases commonly present in biogas. State two advantages of using this gas over fossil fuels.

Answer 1

Biogas

1. Biogas is a renewable energy source produced out of animal waste and food waste.
2. The dung and water are mixed in an appropriate amount and placed in the biogas plant to generate biogas energy.

Four gas commonly present in biogas

1. Methane
2. Carbon dioxide
3. Hydrogen
4. Hydrogen sulfide

Advantages of using biogas over fossil fuels:

1. No smoke or residue forms after burning, unlike coal or wood.
2. Biogas is a cheap form of energy that replenishes itself.
3. By product is also usable as fertilizer.