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General Mechanism of Electrophilic Aromatic Substitution

The octane nu...

Question

The octane number of a sample of petrol is 40. It means that its knocking property is equal to the mixture of

A

40 $%$ n-heptane + 60 $%$ iso-octane

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B

40 $%$ petrol + 60 $%$ iso-octane

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C

60 $%$ n-heptane + 40 $%$ iso-octane

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D

60 $%$ petrol + 40 $%$ iso-octane

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Solution

The correct option is C
60 $%$ n-heptane + 40 $%$ iso-octane

Octane number of fuel is the percentage of iso- octane in mixture.

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