A-LevelChemistryCarbonyl compounds9701/12 · Feb/Mar 2017 · Q251 Mark

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

A1,1-dibromobutane

B1,2-dibromobutane

C1,3-dibromobutane

D2,2-dibromobutane

✓ Correct answer

A: 1,1-dibromobutane

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Topic: Carbonyl compounds, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2017 Paper 1 Variant 2, question 25.

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