Question

Identify the correct statement for smog.

• A. Classical smog is a mixture of oxides of sulphur with fog.
• B. Classical smog is also known as London smog.
• C. Photo chemical smoke is made up of nitrogen oxides and other chemical compounds.
• D. All the above.

Answer 1

The correct option is D All the above.

Classical smog is a mixture of sulfur dioxide and coal smoke with fog. Classical smog is also called as London-smog and mostly occurring in the winter months. Photochemical smog is produced when sunlight reacts with oxides of nitrogen and at least one volatile organic compound (VOC) in the atmosphere. Photochemical smog is also called as the Los Angeles-smog, which is relatively dry.