O-LevelChemistryChemistry of the Environment5070/12 · May/June 2022 · Q291 Mark

The flow chart describes the preparation of ammonium sulfate. What are elements 1–4?

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Anitrogen (1), oxygen (2), hydrogen (3), sulfur (4)

Bnitrogen (1), oxygen (2), hydrogen (3), oxygen (4)

Coxygen (1), nitrogen (2), hydrogen (3), sulfur (4)

Doxygen (1), nitrogen (2), sulfur (3), hydrogen (4)

✓ Correct answer

A: nitrogen (1), oxygen (2), hydrogen (3), sulfur (4)

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Topic: Chemistry of the Environment, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2022 Paper 1 Variant 2, question 29.

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