Short answer·Standard multi-step (3/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
A compound decolourises cold alkaline . Give the likely class and product type formed in this mild oxidation.
Total: 3 marks
(a) Identify the likely class. (1 mark)
(b) Name the type of product formed by mild oxidation. (1 mark)
(c) State the visual change. (1 mark)
Something wrong with this item?