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 ……………

Write the full forms of each :

(a) DDT

(b) ODF

(c) CFCs

(d) CNG

(e) LPG

List two major harmful effects of each of the following:

Rivers contaminated with sewage.

List two major harmful effects of each of the following:

Too much gaseous exhausts containing CO₂ and SO₂