The pollutants which are formed from the chemical reaction of primary pollutants in the environment:

1. Biodegradable pollutants
2. Secondary pollutants
3. Quantitative pollutants
4. Non-Biodegradable pollutants

The excessive concentration of foreign matter in the air which adversely affects the well-being of human beings, animals, plants and their environment:

1. Air Pollution
2. Pollution
3. Soil Pollution
4. Radioactive Pollution

Unwanted sound that is an irritant and source of stress:

1. Air pollution
2. Radioactive pollution
3. Noise pollution
4. Soil pollution

Which of the following is an example of soil pollution?

1. Disposal of solid waste in the open
2. Dumping sewage in the open
3. Overuse of fertilizers
4. All of the above.