Aromatics have the highest ________________ of all the hydrocarbons of same carbon atoms?
Correct answer: B. Octane number
- A. Smoke point
- B. Octane number
- C. Cetane number
- D. Viscosity
Explanation
Aromatic rings resist auto-ignition and therefore give high octane numbers in spark-ignition fuels. Cetane number is the opposite type of ignition-quality measure and is associated with diesel fuels, where paraffins perform better.
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