O Level5129_w25_qp_31Written

Combined Science 5129/31 — October/November 2025

Paper 3 Experimental Skills and Investigations (variant 1)

Question paper Mark scheme

PreviewQuestion paper Mark scheme Open full screen

If the preview doesn't show on your device, use the download buttons above.

For the whole October/November 2025 seriesGrade thresholds

Grade boundaries for 5129/31

Grade	A	B	C	D	E
Marks	25	20	15	12	9

Minimum raw mark out of 40, from Cambridge's October/November 2025 grade thresholds. Cambridge sets A* only for the whole subject.

Also in October/November 20255129/11Paper 1 Multiple Choice 5129/12Paper 1 Multiple Choice 5129/21Paper 2 Theory 5129/22Paper 2 Theory 5129/32Paper 3 Experimental Skills and Investigations

Paper 3 Experimental Skills and Investigations — other years5129/32October/November 2025 5129/31May/June 2025 5129/32May/June 2025 5129/31October/November 2024 5129/32October/November 2024 5129/31May/June 2024 5129/32May/June 2024 5129/32October/November 2023 All Combined Science papers →