A-LevelChemistryAnalytical techniquesOct/Nov 2019Paper 1 Q301 Mark

Substance T was analysed and found to contain 62.07% carbon, 10.34% hydrogen and 27.59% oxygen. The infra-red spectrum of substance T is shown. [Figure 30.1] Which substance could be T?

Q: What is the correct answer to this A-Level Chemistry question?

The correct answer is A: [Skeletal formula of cyclohexanol].

Q: What topic does this question test?

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

A[Skeletal formula of cyclohexanol]

B[Skeletal formula of 3-methylbutan-2-ol]

C[Skeletal formula of propanone]

D[Skeletal formula of heptan-1-ol]

✓ Correct Answer

The correct answer is A: [Skeletal formula of cyclohexanol]

📋 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.

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About This A-Level Chemistry Question

Topic

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

Source

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

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