A-LevelChemistryHydrocarbonsFeb/Mar 2019Paper 1 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?

Q: What topic does this question test?

This question tests Hydrocarbons in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

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

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

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

🔒

Unlock the Examiner's Analysis

Join thousands of Cambridge students already using Oracle Prep

About This A-Level Chemistry Question

Topic

This multiple-choice question tests Hydrocarbons in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Chemistry Feb/Mar 2019 examination, Paper 1 Variant 2.

Practice on Oracle Prep

Oracle Prep provides AI-powered practice for all Cambridge O-Level and A-Level subjects. Our platform includes topic predictions with 87.7% accuracy, AI essay grading, and a comprehensive question bank spanning 25 years of past papers across 29 subjects.