"Non-Conventional" sources of energy include which of the following options?
- Solar energy
- Electricity
- Firewood
- Tidal power
- Dried dung
Answer & explanation
Correct answer: option 3
The correct answer is Option 3: A 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.