Auto-ignition reaction time for petrol engine first decreases with inc – McqOptions

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1.	Auto-ignition reaction time for petrol engine first decreases with increase in fuel air ratio, reaches a minimum value and then increases with subsequent increase in fuel air ratio. The maximum value occurs in the region of
A.	lean mixture
B.	chemically correct mixture
C.	rich mixture
D.	none of the mentioned
Answer» C. rich mixture

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