1. Benzene
  2. Iso-octane
  3. Normal heptane
  4. Alcohol
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1 Answers

Answer: Option 3

Normal heptane fuel detonates readily. Octane number equates to the anti-knock qualities of a comparison mixture of heptane and isooctane which is expressed as the percentage of isooctane in heptane and is listed on pumps for gasoline (petrol) dispensed globally.

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