Question

For biogas production, besides dung, which of the following is used as manure?
A) Eichornia
B) Parthenium
C) Glycine
D) Arachis

Answer 1

For biogas production, besides dung, the material used should produce a proper amount of bioenergy (biofuel). The biofuel is made from organic materials and used as an alternative source of diesel fuel.

Complete step by step answer:
Biofuels: They are the liquid or gaseous fuels produced from biomass resources and used in the place of other fossil fuels. Eichornia crassipes, water hyacinth is known as one of the most problematic weeds, which grows at a very fast rate and can cover the whole pond within a very short period of time and it is very difficult to get rid of them. But these weeds are nowadays used in many developing countries for the production of fuel. Biodiesel produced from them is usually referred to as ‘Green fuel’ and is used as a renewable source of energy.
So, the correct answer is option (A).

Additional information: -
Bio-ethanol: The ethanol produced from biomass such as sugar-containing material like sugarcane, sugarbeet, etc, starch-containing material like corn, algae, etc and cellulosic material like wood waste, agricultural and forest residue, etc.
-Biodiesel: it is a methyl or ethyl ester of fatty acid produced from vegetable oils or animal fat.

Note: Biofuel can be a good alternative for conventional fuel as later is a renewable source of energy. Biofuel gives the country a ray of hope in providing energy security. It is also very important to raise the economy of the country as domestic crude oil is able to meet only about $23\%$ of the demand, while the rest is met from imported crude.