Fill in the blanks:

(i) Rubber particles and dust raised by running motor vehicles are examples of .................... pollutants.

(ii) Too frequent exposure to.................... in a medical diagnostic technique may damage chromosomes.

(iii) Thermal power plants give out a lot of .................... waste water.

(iv) Sewage is a liquid waste from………

(i) Vehicular air

Explanation: Vehicles burn fuels. This results in the release of rubber particles and dust among other harmful gases.

(ii) X rays

Explanation: X rays are used for medical purposes to detect fractures. However, Frequent exposure to these X-rays may cause mutations in the cells of the human body.

(iii) hot

Explanation: Thermal power plants make use of huge amounts of energy. The water that is involved ends up getting really heated. It is then released as a waste product.

(iv) domestic activities

Explanation:

Sewage is used to categorize the faeces, urine and laundry wastes that are generated in a household.