Question
Bio-fuels and Fossil fuels

Answer

Bio-fuelsFossil fuels
(1) The fuels obtained from the decomposition of excretory products of animal and plants are called bio-fuels.(1) Fuels obtained from the burials of plants and animal from the earth crust are called fossil fuels.
(2) These fuels are eco-friendly and cause comparatively less pollution.(2) These fuels are not eco-friendly as their combustion cause pollution.
(3) These fuels are inexhaustible.(3) These fuels are exhaustible.
(4) Examples: Gobar gas, ethanol,biodisel(4) Examples: Coal, natural gas, crude oil

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