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
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The correct answer is A. This question tests the candidate's understanding of analytical techniques within the Chemistrysyllabus. The examiner's mark scheme requires...
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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...
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