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A-LevelChemistryCarbonyl compoundsOct/Nov 2020Paper 1 Q251 Mark

Diols in which both hydroxy groups are bonded to the same carbon atom can spontaneously eliminate a molecule of water to produce a carbonyl compound. Which compound, after complete hydrolysis, gives a silver mirror with Tollens' reagent?

A1,1-dibromobutane
B1,2-dibromobutane
C1,3-dibromobutane
D2,2-dibromobutane

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The correct answer is A. This question tests the candidate's understanding of carbonyl compounds 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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About This A-Level Chemistry Question

This multiple-choice question appeared in the Cambridge A-Level Chemistry (9701) Oct/Nov 2020 examination, Paper 1 Variant 2. It tests the topic of Carbonyl compounds and is worth 1 mark.

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