O-LevelChemistryChemistry of the Environment5070/11 · Oct/Nov 2022 · Q341 Mark

Three statements about the carbon cycle are given. 1 The carbon cycle regulates the amount of carbon dioxide in the atmosphere. 2 During photosynthesis, carbon dioxide is produced. 3 Combustion of hydrocarbons requires oxygen. Which statements are correct?

A1 and 2 only

B1 and 3 only

C2 and 3 only

D1, 2 and 3

✓ Correct answer

B: 1 and 3 only

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Topic: Chemistry of the Environment, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2022 Paper 1 Variant 1, question 34.

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