Multiple choice

Among the following ----------------------- is most compact and branched isomer of hexane.

  1. 2-Methylpentane

  2. 3-Methylpentane

  3. 2,3-Dimethylbutane

  4. 2,2-Dimethylbutane
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

2,2-Dimethylbutane, trivially known as neohexane, is an organic compound with formula C6H14 or (H3C-)3-C-CH2-CH3. It is therefore an alkane, indeed the most compact and branched of the hexane isomers — the only one with a quaternary carbon and a butane (C4) backbone.

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