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A-LevelChemistryIntroduction to organic chemistry9701/12 · Feb/Mar 2023 · Q251 Mark

Which two formulae correctly represent a pair of structural isomers?

ACH3CH(CH3)COOH and (CH3)2CHCOOH
BCH3CH(COOH)CH3 and (CH3)2CHCOOH
CCH3CHCOOH and CH3CH2CH2COOH
DCH3CH2CH2COOH and (CH3)2CHCOOH

✓ Correct answer

D: CH3CH2CH2COOH and (CH3)2CHCOOH

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About this question

Topic
Introduction to organic chemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, Feb/Mar 2023 Paper 1 Variant 2, question 25.

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