Chemistry
Grade-6
Easy

Question

Identify the compound which acts as secondary pollutants of air from the following.

  1. Carbon monoxide
  2. Sulfur trioxide
  3. Nitrogen oxide
  4. Sulfur dioxide

hintHint:

A secondary pollutant is not directly emitted as such, but forms when other pollutants react in the atmosphere.

The correct answer is: Sulfur trioxide


    Sulfur trioxide is a compound that acts as a secondary pollutant in the air.
    As sulfur trioxide is made when sulfur dioxide reacts with water in the air.

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