DP Chemistry (last assessment 2024)

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Question 19M.1.sl.TZ1.24

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.sl.TZ1.24
Level sl Paper 1 Time zone TZ1
Command term Question number 24 Adapted from N/A
24.
[Maximum mark: 1]
19M.1.sl.TZ1.24

Which functional group is surrounded in the molecule?

A. hydroxyl

B. carboxyl

C. carbonyl

D. ether

[1]

Markscheme

C

Examiners report

One G2 comment stated “the functional group by definition is an aldehyde, however, students must assume that the H should be considered as an 'R group in order to call it a carbonyl”. However, aldehyde was not an alternative answer, with the main misconception considering the C=O as a carboxyl rather than carbonyl.

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