Case study·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 student nitrates chlorobenzene and then compares the products with the three disubstituted benzene arrangements shown in the figure.
Total: 3 marks
(a) Which arrangement represents the ortho product? (1 mark)
(b) Which arrangement represents the para product? (1 mark)
(c) Why are these positions favoured even though chlorine deactivates the ring? (1 mark)
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