Which of the following is not a biomass source?A. Gobar gasB. Nuclear energyC. WoodD. Coal

The correct answer is B. Nuclear energy.

Explanation:
Biomass energy is derived from organic materials such as plants, animals, and waste products. It is renewable and includes resources like wood, agricultural waste, animal manure, and organic waste. The common characteristic of biomass sources is that they come from living or recently dead organisms.
Let’s look at the options:

Gobar gas (Biogas) is produced from the decomposition of organic matter, such as cow dung, under anaerobic conditions. Since it is generated from biological waste, it is a biomass source.

Nuclear energy is produced through nuclear reactions, typically fission, involving atoms like uranium. It does not come from organic or biological material, hence it is not a biomass source.

Wood is derived from trees, a form of organic matter, making it a biomass source.

Coal, though originally formed from ancient plant material, is considered a fossil fuel. It is not classified as biomass because it takes millions of years to form and is non-renewable.

Thus, nuclear energy is not a biomass source.