DP Chemistry (first assessment 2025)

Test builder »

Question 21M.1A.SL.TZ2.25

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.1A.SL.TZ2.25
Level	SL	Paper	1A	Time zone	TZ2
Command term	Apply	Question number	25	Adapted from	N/A

25.

[Maximum mark: 1]

21M.1A.SL.TZ2.25

What is the IUPAC name of the molecule shown?

A. 2,4-dimethylhexane

B. 3,5-dimethylhexane

C. 2-methyl-4-ethylpentane

D. 2-ethyl-4-methylpentane

[1]

Markscheme

A

Syllabus sections

Structure 3. Classification of matter » Structure 3.2—Functional groups: Classification of organic compounds » Structure 3.2.5—“IUPAC nomenclature” refers to a set of rules used by the International Union of Pure and Applied Chemistry to apply systematic names to organic and inorganic compounds. Apply IUPAC nomenclature to saturated or mono-unsaturated compounds that have up to six carbon atoms in the parent chain and contain one type of the following functional groups: halogeno, hydroxyl, carbonyl, carboxyl.