DP Chemistry (last assessment 2024)

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Question 22M.1.sl.TZ2.26

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1.sl.TZ2.26
Level sl Paper 1 Time zone TZ2
Command term State Question number 26 Adapted from N/A
26.
[Maximum mark: 1]
22M.1.sl.TZ2.26

Which is a homologous series?

A.  C2H4, C3H5, C4H6

B.  C2H2, C3H4, C4H6

C.  C2H2, C2H4, C2H6

D.  C2H2, C4H4, C6H6

[1]

Markscheme

B

Examiners report

45% of the candidates identified the members of the same homologous series (ethyne, propyne and butyne). The most commonly chosen distractor included the compounds C2H2, C4H4 and C6H6. The question had good discrimination between high-scoring and low-scoring candidates.

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