DP Chemistry (last assessment 2024)

Test builder »

Question 19M.2.sl.TZ2.3a

Select a Test
Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.sl.TZ2.3a
Level sl Paper 2 Time zone TZ2
Command term Outline Question number a Adapted from N/A
a.
[Maximum mark: 1]
19M.2.sl.TZ2.3a

Dinitrogen monoxide, N2O, causes depletion of ozone in the stratosphere.

(a)

Outline why ozone in the stratosphere is important.

[1]

Markscheme

absorbs UV/ultraviolet light «of longer wavelength than absorbed by O2»  [✔]

Examiners report

60 % of the candidates were aware that ozone in the atmosphere absorbs UV light. Some candidates did not gain the mark for not specifying the type of radiation absorbed.

Syllabus sections