DP Chemistry (last assessment 2024)
Question 21N.2.hl.TZ0.6a
| Date | November 2021 | Marks available | [Maximum mark: 1] | Reference code | 21N.2.hl.TZ0.6a |
| Level | hl | Paper | 2 | Time zone | TZ0 |
| Command term | Outline | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
21N.2.hl.TZ0.6a
Biochemical oxygen demand (BOD) can be determined by the Winkler Method.
(a)
Outline what is measured by BOD.
[1]
Markscheme
«amount of» oxygen used to decompose the organic matter in water ✔
