A-LevelChemistryPolymerisationFeb/Mar 2025Paper 1 Q291 Mark
The structure of compound G is shown. Compound G undergoes addition polymerisation. Which diagram shows the repeat unit of the polymer formed?
ARepeat unit showing a saturated backbone -CH2-C- with side groups C≡N and -C(=O)OCH3 on the second carbon.
BRepeat unit showing a saturated backbone -CH2-C- with side groups H and -C(=O)OCH3 on the second carbon (C≡N not shown).
CRepeat unit showing a saturated backbone -CH2-C- with side groups C≡N and -C(=O)OCH3 on the second carbon.
DRepeat unit showing a rearranged structure including a -C(=O)CH2- group, a C(=CH2) group, and a C≡N group.
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of polymerisation within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 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...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep