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On combusting a solid fuel, the final product obtained in high amount is ________

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On combusting a solid fuel, the final product obtained in high amount is ________

(a) oxygen

(b) nitrogen

(c) ash

(d) ozone

The question was posed to me in an interview for internship.

This key question is from Characteristics of Good Fuel and its Advantages topic in division Fuel Technologies of Applied Chemistry

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Best answer
The correct choice is (c) ash

The best explanation: After combusting a fuel the product left in more amount is ash. The oxygen and ozone cannot be produced in most of the cases. Nitrogen may be produced but in small amount than that of ash.

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