O-LevelChemistryChemistry of the Environment5070/12 · May/June 2016 · Q261 Mark

The diagram shows a flow chart for the manufacture of fertiliser. In the flow chart, what are W, X, Y and Z?

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AH2 N2 high NH3

BO2 SO2 high SO3

CO2 SO2 low SO3

DN2 H2 high NH3

✓ Correct answer

D: N2 H2 high NH3

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Topic: Chemistry of the Environment, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2016 Paper 1 Variant 2, question 26.

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