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O-LevelChemistryAcids, Bases & Salts5070/11 · Oct/Nov 2012 · Q301 Mark

A mixture of two gases has no effect on either damp blue litmus paper or damp red litmus paper. Which gases are present in the mixture?

Aammonia and oxygen
Bcarbon dioxide and sulfur dioxide
Cchlorine and hydrogen
Dhydrogen and oxygen

✓ Correct answer

D: hydrogen and oxygen

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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 2012 Paper 1 Variant 1, question 30.

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