| Date | November 2020 | Marks available | 1 | Reference code | 20N.1.hl.TZ0.24 |
| Level | HL | Paper | 1 | Time zone | TZ0 |
| Command term | State | Question number | 24 | Adapted from | N/A |
Question
Which of these oxides contribute to acid deposition?
I.
II.
III.
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
Markscheme
A
Examiners report
Not well answered. Less than half knew which oxides contribute to acid deposition, with the majority including CO2 in the list. This misconception was held by higher and lower scoring candidates equally.
