The smog is essentially caused by the presence of:

CHEMISTRY · Single correct · GCSE · Chemistry · Chemistry of the Atmosphere · Chemistry of the Atmosphere

Problem

The smog is essentially caused by the presence of: (1) O3\text{O}_3 and N2\text{N}_2 (2) O2\text{O}_2 and N2\text{N}_2 (3) Oxides of sulphur and N2\text{N}_2 (4) O2\text{O}_2 and O3\text{O}_3

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