With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.

With increase in __________ Knocking tendency in a spark ignition petr

1.	With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
A.	supercharging
B.	wall temperature
C.	compression ratio
D.	engine speed
Answer» E.

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With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.

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