A-LevelChemistryPolymerisationMay/June 2025Paper 1 Q261 Mark
The repeat unit of a polymer is shown. [Figure showing repeat unit of a polymer] Three statements about this polymer are listed. 1 Its disposal is hazardous because it produces toxic gases when burned. 2 Two different monomers are used to make this polymer. 3 The monomer for this polymer is 3-chlorobut-2-ene-1-ol. Which statements are correct?
A1 and 2
B1 and 3
C1 only
D2 only
✓ Correct Answer
The correct answer is A: 1 and 2
📋 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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