During which of the following operating conditions of an auto-mobile, carbon monoxide content in exhaust gas is maximum? (1) Acceleration (2) Cruising (3) Idle running (4) Deacceleration

1 Answer

Answer :

(3) Idle running Explanation: High Carbon Monoxide (CO) content in exhaust gas of automobiles usually indicate a fuel mixture richer than ideal (rich mixture - air fuel ratio below 14.7).

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