Multiple choice

Which of the following hydrocarbons have lowest octane number?

  1. Butane

  2. Pentane

  3. Hexane

  4. Heptane

  5. Octane

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Octane numbers decrease with increasing molecular weight. Octane has lowest octane number (-19) among given hydrocarbons.