Question

What is biomass? Explain the principle and working of a biogas
plant using a labelled schematic diagram
NCERT Class X
Science - Exemplar Problems
Chapter_SAMPLE QUESTION PAPER-II

Answer 1

biomass is defined as the living matter and residue .it includes plants animals agricultural and forest waste sewarage garbage waste biodegradable organic waste meat sugar beverages.

Answer 2

Answer:

Biomass is a fuel that is obtained from organic materials.

Principle of Biogas: Biogas is produced by decomposition of organic matter. Biogas is mainly composed of methane. It burns with negligible smoke and leaves no residue. It can be used as kitchen fuel. It can also be used for generating electricity.

Working of Biogas Plant:

A mixture of farm waste is fed into the biogas plant. This waste is mixed to make a slurry.

Slurry is then fed into the digester. Digester is an air-tight chamber and oxygen is not present in it.

Anaerobic bacteria in digester carry out decomposition of slurry. This results in production of biogas.

Biogas is sent out through an outlet so that it can be suitably used.

Decomposed matter is taken out and it can be used as manure.