Skip to main content
A-LevelChemistryAnalytical techniquesOct/Nov 2010Paper 1 Q371 Mark

The diagram shows a compound present in smoke from burning garden waste. [Figure showing C3H4O structure] Which reagents would undergo a colour change on reaction with this compound? 1 aqueous bromine 2 Fehling's reagent 3 warm acidified K₂Cr₂O₇

A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct

✓ Correct Answer

The correct answer is A. This question tests the candidate's understanding of analytical techniques 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

About This A-Level Chemistry Question

This multiple-choice question appeared in the Cambridge A-Level Chemistry (9701) Oct/Nov 2010 examination, Paper 1 Variant 2. It tests the topic of Analytical techniques and is worth 1 mark.

Oracle Prep provides AI-powered practice for all Cambridge O-Level and A-Level subjects. Our platform includes topic predictions with 87.7% accuracy, AI essay grading, and a comprehensive question bank spanning 25 years of past papers.

© 2026 Oracle Prep — The AI-Powered Cambridge Exam Engine