The fuels in order of decreasing knock tendency for spark ignition eng – McqOptions

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1.	The fuels in order of decreasing knock tendency for spark ignition engines are ___________
A.	paraffins, aromatics, naphthenes
B.	paraffins, naphthenes, aromatics
C.	naphthenes, aromatics, paraffins
D.	none of the mentioned
Answer» C. naphthenes, aromatics, paraffins

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