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O-LevelChemistryAcids, Bases & Salts5070/11 · Oct/Nov 2019 · Q201 Mark

Which statement about ammonia is correct?

AIt is a colourless, odourless gas.
BIt is a gas that turns damp blue litmus paper red.
CIt is formed when potassium nitrate is heated with aqueous sodium hydroxide and aluminium.
DIt is manufactured using vanadium(V) oxide as a catalyst.

✓ Correct answer

C: It is formed when potassium nitrate is heated with aqueous sodium hydroxide and aluminium.

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About this question

Topic
Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2019 Paper 1 Variant 1, question 20.

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