Daily Practice · GCSE Science

Daily Practice - GCSE Science

Biology, chemistry and physics recall, definition and calculation, drawn from every strand.

24th August 2025

5 questions · GCSE · 584 questions in this band

1
Tests for Ions, Gases and Flame Tests
A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
2
Chromatography and Instrumental Analysis
Explain why the baseline is drawn in pencil rather than ink.
3
Chemistry of the Atmosphere
Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
4
The Atmosphere: Evolution and Greenhouse Gases
Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
5
Climate Change and Atmospheric Pollutants
Explain why burning a fuel can produce nitrogen oxides even if the fuel itself contains no nitrogen.

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Every sheet is deterministic: the same date always regenerates the same five questions. All of August 2025, including the monthly compilation PDF.