A-LevelChemistryChemical bonding9701/12 · Feb/Mar 2025 · Q161 Mark

Propene, hydrogen cyanide and carbon dioxide each contain π bonds. Which molecules contain two π bonds?

Acarbon dioxide and hydrogen cyanide

Bcarbon dioxide and propene

Chydrogen cyanide and propene

Dhydrogen cyanide only

✓ Correct answer

A: carbon dioxide and hydrogen cyanide

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Topic: Chemical bonding, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2025 Paper 1 Variant 2, question 16.

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