A-LevelChemistryHydrocarbons9701/12 · Feb/Mar 2019 · Q211 Mark

Compound L has the molecular formula C₁₀H₁₆. A sample of L reacted with an excess of hot, concentrated, acidified potassium manganate(VII). Compound M is produced. [Figure 21.1] What could be the structure of compound L?

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Acyclic structure consisting of a cyclohexene ring with an isopropyl group and a methyl group attached.

Bcyclic structure consisting of a cyclohexene ring with a methyl group and an alkene side chain (-CH=C(CH3)2).

Cbicyclic structure with two fused rings and two internal double bonds.

Dbicyclic structure with two fused rings and one internal double bond.

✓ Correct answer

A: cyclic structure consisting of a cyclohexene ring with an isopropyl group and a methyl group attached.

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Topic: Hydrocarbons, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2019 Paper 1 Variant 2, question 21.

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