DP Chemistry (last assessment 2024)

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Question 19M.3.hl.TZ2.a

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.3.hl.TZ2.a
Level hl Paper 3 Time zone TZ2
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
19M.3.hl.TZ2.a

Sucrose is a disaccharide.

State the name of the functional group forming part of the ring structure of each monosaccharide unit.

[1]

Markscheme

acetal
OR
ether  [✔]

 

Note: Accept “glycosidic bond/linkage” but not “glucosidic”.

Do not accept “hemiacetal”.

Examiners report

This was reasonably answered although there were some candidates who stated ester or hemiacetal, which is incorrect.

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