DP Chemistry (first assessment 2025)

Test builder »

Question 21M.1A.HL.TZ2.37

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.1A.HL.TZ2.37
Level	HL	Paper	1A	Time zone	TZ2
Command term	Determine	Question number	37	Adapted from	N/A

37.

[Maximum mark: 1]

21M.1A.HL.TZ2.37

Which can be reduced to a secondary alcohol?

A. C₂H₅COOH

B. CH₃CH₂OCH₃

C. (CH₃)₂CHCHO

D. CH₃COC₂H₅

[1]

Markscheme

D

Syllabus sections

Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.2—Electron transfer reactions » Reactivity 3.2.10—Functional groups in organic compounds may undergo reduction. Deduce equations to show reduction of carboxylic acids to primary alcohols via the aldehyde, and reduction of ketones to secondary alcohols.