A-LevelChemistryHydrocarbons9701/12 · Feb/Mar 2017 · Q211 Mark

Kerosene is used as an aircraft fuel. Q is one of the molecules in kerosene and has the skeletal formula shown. [Figure showing skeletal formula of Q, which is 2,3-dimethylbutane]. Other structural isomers of this molecule are also found in kerosene. Which structure is a structural isomer of Q?

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A[Skeletal structure of 2-methylpentane]

B[Skeletal structure of 3-methylpentane]

C[Skeletal structure of hexane]

D[Skeletal structure of 2,2-dimethylbutane]

✓ Correct answer

D: [Skeletal structure of 2,2-dimethylbutane]

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Topic: Hydrocarbons, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2017 Paper 1 Variant 2, question 21.

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