Multiple choice general knowledge science & technology

A gasoline's octane rating measures:

  1. Density

  2. Boiling point

  3. Resistance to engine knock

  4. Purity
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C Correct answer
Explanation

Octane rating measures a gasoline's resistance to engine knocking - premature fuel combustion. Higher octane fuels resist knocking better and are used in high-performance or high-compression engines. It does not measure density, boiling point, or purity.

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