Which of the following has highest knocking [UPSEAT 2004]

1.	Which of the following has highest knocking [UPSEAT 2004]
A.	Olefins
B.	Branched chain olefins
C.	Straight chain olefins
D.	Aromatic hydrocarbons
Answer» D. Aromatic hydrocarbons

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Which of the following has highest knocking [UPSEAT 2004]

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