Question

Examples of the primary environmental pollutant are __________.

• A. NO
• B. CO
• C. SO2
• D. All of these

Answer 1

The correct option is D All of these

Introduction of substances that are harmful to the environment is called environmental pollution and the substance is called pollutant. A pollutant which is directly released into the environment is called primary pollutant. All the given options are examples of primary pollutants, which include Carbon mono oxide (CO), nitric oxide (NO), sulphur dioxide (SO2).