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Which is the major source for sulphur dioxide?

(a) Volcanic eruptions

(b) Coal and crude oil combustion

(c) Burning of petrol

(d) Sewage treatment process

This question was posed to me in quiz.

My query is from Air Pollution topic in portion Air Pollution of Environmental Engineering

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Best answer
The correct option is (b) Coal and crude oil combustion

Explanation: Though emission of sulphur dioxide is peak during volcanic eruptions, its major source is during combustion of crude oil and coal for heat and power generation.

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