What this tests
Syllabus point 7.2 — Oxides, in Acids, bases and salts. Difficulty medium (estimated from the question's demands, not a Cambridge rating).
Also set in
The same question, as Cambridge printed it in other papers.
Cambridge IGCSE Chemistry 0620 · 7.2 Oxides
June 2013 · Paper 11 · Question 19
One real Cambridge question from Acids, bases and salts, with the official answer. Cambridge has printed this question 2 times.