Question
Distinguish between conventional and non-conventional sources of energy.

Answer

S.No.
Conventional sources
Non-conventional sources
(i)
These sources of energy are in use from the past.
These sources of energy are in use from recent times.
(ii)
They spread pollution.
These are eco-friendly.
(iii)
They are generally exhaustible.
They are usually inexhausitble.
(iv)
These include firewood, cattle dung cake, coal, petroleum, natural gas and electricity (both hydel and thermal).
These include solar, wind, tidal, geo-thermal, biogas and atomic energy

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