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Octane number is a rating of ___________

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Octane number is a rating of ___________

(a) petrol knocking

(b) diesel knocking

(c) petrol cracking

(d) diesel cracking

The question was posed to me in a national level competition.

I want to ask this question from Cracking and Knocking of Petroleum in chapter Fuel Technologies of Applied Chemistry

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Best answer
The correct choice is (a) petrol knocking

Easiest explanation: Octane number is the rating for petrol knocking and cetane number is the rating for diesel knocking.

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