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

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1.	The fuels in order of decreasing knock tendency for spark ignition engines are __________
A.	Paraffin, aromatic, napthene
B.	Paraffin, napthene, aromatic
C.	Napthene, aromatics, paraffin
D.	Napthene, paraffin, aromatic
Answer» C. Napthene, aromatics, paraffin

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