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Which of the following compound produces the least knocking?

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in Engineering Chemistry II by (789k points)
Which of the following compound produces the least knocking?

(a) Benzyl

(b) Paraffin

(c) Olefin

(d) Diesel

I got this question in an interview for internship.

This key question is from Knocking topic in section Fuels and Combustion of Engineering Chemistry II

1 Answer

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Best answer
The correct answer is (a) Benzyl

To elaborate: Aromatic compounds produces least knocking due to their cyclic structures. Straight chain hydrocarbons produces more knocking due to this effect.

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