Question

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. It is heating capacity is

high. Bio-gas is also used for lighting. The slurry left behind is removed periodically

and used as excellent manure, rich in nitrogen and phosphorous. The large-scale

utilisation of bio-waste and sewage material provides a safe and efficient method of waste-disposal besides supplying energy and manure.

i. What type of source of energy is mentioned in the above picture?

ii. Does this source of energy can cause pollution? Justify your answer with a brief

explanation.

iii. Write the two advantages of biogas as fuel.

iv. Write the different components of Biogas?​

Answer 1

Answer:

where is the picture

and I can't understand the question