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Which of the following exhaust gas produces least harmless components after its combustion?

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in Engineering Chemistry II by (789k points)
Which of the following exhaust gas produces least harmless components after its combustion?

(a) Carbon monoxide

(b) Ethyne

(c) NOx

(d) N2

I got this question in an international level competition.

The query is from Octane and Cetane Number topic in section Fuels and Combustion of Engineering Chemistry II

1 Answer

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Best answer
Right choice is (d) N2

Best explanation: Gases produced by the compression ignition engines are said to be exhaust gases. This engines operate with air-fuel ratios of 14:1 on load and 70:1 on idling.

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