CBSE CLASS X : QUESTIONS FOR SA 1

QUESTION: What is biogas? How is it obtained from biomass? Why is biogas considered an ideal fuel?

ANSWER: Biogas is a mixture of methane, carbon dioxide, hydrogen and hydrogen sulphide. Biogas is obtained by anaerobic decomposition of biomas.
1. Heating Capacity high
2. Burnes without smoke
3. Leaves no residue
4. Slurry left behind can be used as a manure