DP Chemistry (last assessment 2024)

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Question 22M.1.sl.TZ2.25

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1.sl.TZ2.25
Level sl Paper 1 Time zone TZ2
Command term Identify Question number 25 Adapted from N/A
25.
[Maximum mark: 1]
22M.1.sl.TZ2.25

Which structure represents a repeating unit of a polymer formed from propene?

A.  –CH2–CH(CH3)–

B.  –CH2–CH2–CH2–

C.  –CH(CH3)–CH(CH3)–

D.  –CH2–CH2–

[1]

Markscheme

A

Examiners report

44% of the candidates identified the repeating unit of the polymer formed from propene. The most commonly chosen distractor was a straight chain.

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