"Conventional" sources of energy do not include which of the following options?
|
A and D only A, B, and E C and D only None of the above |
C and D only |
Both commercial and non-commercial sources of energy are known as conventional sources of energy. Commercial sources are coal, petroleum and electricity as they are bought and sold. Non-commercial sources of energy are fuelwood, agricultural waste, and dried dung. These are non- commercial as they are not available in the market on a large scale. There are three other sources of energy which are commonly termed as non-conventional sources — solar energy, wind energy and tidal power. |