NCERT Class 8 Science Chapter 18 Pollution of Air and Water Solutions
NCERT Class 8 Science Chapter 18 Pollution of Air and Water Solutions NCERT TEXT BOOK EXERCISES Q. 1. What are the different ways in which water gets contaminated? Ans. Water gets contaminated by following ways: (i) Water gets contaminated when sewage is disposed off in rivers. (ii) Chemicals which are harmful and poisonous are thrown in water resources by various industrial units. (iii) Harmful chemicals used in agricultural process gets mixed with ground water making it unfit for consumption. (iv) Breeding of microorganisms in water make water polluted. Q. 2. At an individual level, how can you help reduce air pollution? Ans. We can plant tree to reduce the level of carbon dioxide. We can get our vehicles serviced well to reduce incomplete consumption of fuels. We can also reduce air pollution by saying no to crackers during Diwali celebrations. Q. 3. Clear, transparent water is always fit for drinking. Comment. Ans. The clear, transparent water may not always safe for drinking...