DP Chemistry (first assessment 2025)
Question 20N.1A.SL.TZ0.24
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.1A.SL.TZ0.24 |
| Level | SL | Paper | 1A | Time zone | TZ0 |
| Command term | Identify | Question number | 24 | Adapted from | N/A |
24.
[Maximum mark: 1]
20N.1A.SL.TZ0.24
Which functional groups are present in this molecule?
A. carbonyl, ether, nitrile
B. carbonyl, ester, nitrile
C. carboxyl, ether, amine
D. carboxyl, ester, amine
[1]
Markscheme
A
Examiners report
This question on identifying functional groups was the most discriminating question on the paper. 58% correctly identified all three groups but it was answered much better by higher scoring candidates.
Syllabus sections
Structure 3. Classification of matter » Structure 3.2—Functional groups: Classification of organic compounds » Structure 3.2.2—Functional groups give characteristic physical and chemical properties to a compound. Organic compounds are divided into classes according to the functional groups present in their molecules. Identify the following functional groups by name and structure: halogeno, hydroxyl, carbonyl, carboxyl, alkoxy, amino, amido, ester, phenyl.