A-LevelChemistryHydroxy compounds9701/12 · May/June 2023 · Q331 Mark

X, Y and Z are three isomeric alcohols. X CH₃CH₂CH₂CH₂CH₂OH Y CH₃CH₂CH(OH)CH₂CH₃ Z (CH₃)₂C(OH)CH₂CH₃ Separate samples of each alcohol are warmed with a mild oxidising agent and the results noted. One of these alcohols, when dehydrated, will give a pair of cis-trans isomers with molecular formula C₅H₁₀. Which row is correct?

AX, Y and Z Y only

BX, Y and Z Z only

CX and Y only Y only

DX and Y only Z only

✓ Correct answer

C: X and Y only Y only

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Topic: Hydroxy compounds, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2023 Paper 1 Variant 2, question 33.

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