Q10 of 46 Page 268

What is the main raw material used in the production of biogas?

Cow dung-cakes are the main material used in the formation of biogas that is why biogas is also called gobar-gas, but animal waste and plant residue and sewage are also used in the formation of biogas. It is the improved conventional source of energy.


More from this chapter

All 46 →
8

Which is the ultimate source of energy?

 9

What must be the minimum speed of wind to harness wind energy by turbines?

 1

Fill in the blanks

i) Potential difference: voltmeter; then current __________.


ii) Hydro power plant: Conventional source of energy; then solar energy: _________.

 2

In the list of sources of energy given below, find out the odd one.

(wind energy, solar energy, hydroelectric power)