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What is the octane number of the gasoline obtained by thermal cracking?

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in Automotive Engine Design by (137k points)
What is the octane number of the gasoline obtained by thermal cracking?

(a) 93

(b) 75

(c) 58

(d) 60

This question was posed to me in exam.

Question is from Fuels in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design

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The correct choice is (b) 75

To explain: The octane number of the gasoline obtained by thermal cracking is 75, 1-3MPa the pressure maintained during the process of thermal cracking and 500^oC is the temperature maintained during the thermal cracking process.

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