Engineering :: Heat Engines

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For spark ignition engines fuel in order of decreasing knock tendency are

[A].	Paraffins, aromatics, naphthenes	[B].	Paraffins, naphthenes, armatics
[C].	Naphthenes, paraffins	[D].	Naphthenes, aromatics, paraffins
[E].	Aromatics, paraffins, naphthenes

Answer: Option B