Question

Which one of the following is a major constituent of Biogas?
A. Carbon dioxide
B. Methane
C. Hydrogen
D. Nitrogen dioxide

Answer 1

Hint: The process of production of biofuel naturally.

Complete answer:
Biogas is the mixture of gases produced by the breakdown of organic matter in the absence of oxygen in anaerobic conditions.
It is a type of biofuel that is naturally produced from the decomposition of organic matter.
When organic matter, such as food scraps and animal waste breakdown in an anaerobic condition they release a blend of gases, primarily methane and carbon dioxide.
It is a fermentation process in which waste is digested by microbes to produce methane gas.

Constituents of Biogas
Methane – 50 – 70%
Carbon dioxide – 25 – 50%
Nitrogen – 0 – 10%
Hydrogen – 0 – 1%
Hydrogen sulfide – 0.1 – 0.5%
Oxygen – 0 – 0.5%

Advantages of Biogas
- Biogas is eco-friendly.
- It reduces soil and water pollution.
- It is a cost-effective process for producing biofuel.
- It is the best alternative to areas where fuels are not available.
- It uses organic matter for its production which can be readily available.

So, the correct answer is Methane.

Note: Biogas was first recorded in modern times by Jan Baptista Helmont. Earlier anecdotal evidence suggests that it was used in Assyria to heat water baths.