What this tests
Syllabus point 7.3 — Preparation of salts, in Acids, bases and salts. Difficulty medium (estimated from the question's demands, not a Cambridge rating).
Cambridge IGCSE Chemistry 0620 · 7.3 Preparation of salts
June 2025 · Paper 21 · Question 20
One real Cambridge question from Acids, bases and salts, with the official answer.