Consider the following statements: 1. The fuels which are produced by...
- Cow dung cakes serve as a steady source of fuel. Since, these fuels are derived from plants and animals hence they constitute – Biomass.
- These fuels, however, do not produce much heat on burning but a lot of smoke is given out when they are burnt. Cow-dung, various plant materials like crops residue, vegetable waste and sewage are decomposed in the absence of oxygen to give Biogas. Since the starting material is mainly cow-dung, it is popularly known as ‘gobar-gas’.
- Bio-gas is produced in a dome-shaped plant. Bio-gas is an excellent fuel as it contains up to 75% methane. It burns without smoke, leaves no residue like ash in wood, charcoal and coal burning. Its heating capacity is high.
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Consider the following statements: 1. The fuels which are produced by...
Explanation:
1. Biomass:
- Biomass refers to organic materials that come from plants and animals, which can be used as a source of energy.
- These organic materials can be processed to produce biofuels like bioethanol, biodiesel, and biogas.
- Therefore, the statement that fuels produced by plants and animals are called biomass is correct.
2. Biogas:
- Biogas is a type of biofuel that is produced from the anaerobic digestion of organic materials such as agricultural waste, food waste, and sewage.
- The main constituent of biogas is methane, which typically makes up around 50-70% of its composition.
- Therefore, the statement that the main constituent of biogas is methane is also correct.
Therefore, both statements are correct. Biomass is indeed the fuels produced by plants and animals, while methane is the main constituent of biogas.