A-LevelChemistryPolymerisationMay/June 2010Paper 1 Q301 Mark

Polymerisation of 1,1-dichloroethene produces a dense, high melting point substance that does not allow gases to pass through. It is used as cling wrapping. Which sequence appears in a short length of the polymer chain?

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

The correct answer is A: [CH2CCl2CH2CCl2CH2CCl2].

Q: What topic does this question test?

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

A[CH2CCl2CH2CCl2CH2CCl2]

B[CHClCHClCHClCHClCHCl]

C[CCl2CCl2CCl2CCl2CCl2CCl2]

D[CH2CCl2CHClCHClCH2CCl2]

✓ Correct Answer

The correct answer is A: [CH2CCl2CH2CCl2CH2CCl2]

📋 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 Polymerisation in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Chemistry May/June 2010 examination, Paper 1 Variant 2.

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