Which of following causes the least pollution when burnt? (A) petrol (B) diesel (C) coal (D) natural gas
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Natural gas is the cleanest fuel and causes the least pollution when burnt compared to petrol, diesel and coal.
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Natural gas causes the least pollution when burnt.
Explanation:
Natural gas is nothing but methane with is made up of one atom carbon and 4 atom of hydrogen. Among the given fuels, natural gas is considered as least pollution causing gas because it burns completely without leaving any residues.
Other fuels such as petrol, diesel and coal undergoes incomplete combustion as result of which it leads to release of many toxic gas which stays in environment and acts as the causative agent of air pollution.
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