Multiple choice

Which of the following alkanes is used as an anti-knock additive in aviation fuels?

  1. Isopentane

  2. Triptane

  3. Tetramethylbutane

  4. 2-Methylpentane
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Triptane, or 2,2,3-trimethylbutane, is an organic chemical compound with the molecular formula C7H16. It is therefore an alkane, specifically the most compact and heavily branched of the heptane isomers, the only one with a butane (C4) backbone. Triptane is commonly used as an anti-knock additive in aviation fuels.

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