O-LevelChemistryAcids, Bases & Salts5070/12 · May/June 2022 · Q281 Mark

A white compound is insoluble in water. Which cations and anions could be present in the compound?

Asodium: present, calcium: absent, carbonate: present, nitrate: absent

Bsodium: present, calcium: absent, carbonate: absent, nitrate: absent

Csodium: absent, calcium: present, carbonate: present, nitrate: absent

Dsodium: absent, calcium: present, carbonate: absent, nitrate: present

✓ Correct answer

C: sodium: absent, calcium: present, carbonate: present, nitrate: absent

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Topic: Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2022 Paper 1 Variant 2, question 28.

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