O-Level Chemistry Practice Questions - Singapore-Cambridge GCE Ordinary Level Chemistry (Syllabus 6092) Exam

A student wants to test a colourless gas to confirm it is carbon dioxide. Which test gives a positive result?

The gas turns limewater milky The gas relights a glowing splint The gas bleaches moist litmus paper The gas turns damp red litmus paper blue

Correct Answer:

The gas turns limewater milky

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