A-LevelChemistryPolymerisationMay/June 2013Paper 1 Q301 Mark

Polymerisation of ethene gives poly(ethene). How does the carbon–carbon bond in poly(ethene) compare with that in ethene?

Q: What topic does this question test?

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

AThe carbon–carbon bond is longer and stronger in poly(ethene).

BThe carbon–carbon bond is longer and weaker in poly(ethene).

CThe carbon–carbon bond is shorter and stronger in poly(ethene).

DThe carbon–carbon bond is shorter and weaker in poly(ethene).

✓ Correct Answer

The correct answer is B: The carbon–carbon bond is longer and weaker in poly(ethene).

📋 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 2013 examination, Paper 1 Variant 2.

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