Essential Chemistry for IGCSE - Organic Chemistry And Petrochemicals (Section 1 - No. 50)

Which of the following is NOT an advantage of using fuels that burn efficiently?
Produce less greenhouse gases.
Produce more heat per unit of mass.
Produce less smoke and soot.
Produce more sulfur dioxide.

Explanation

Efficient burning reduces the amount of pollutants such as sulfur dioxide, smoke and soot.

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