Question

1..Fill in the blanks with appropriate words.
a) sewage is a major source of _________ pollution .
b) Aeration improves _________ and _______ water.
c) Water which is fit for drinking is called ___________ water.
d) __________ is used to kill germs in water.

2.. state whether true or false .
a) For sedimentation alum is used to water.
b) Chlorination ,the physical method of purifying the water.
c) Industrial waste does not pollute water.​

Answer 1

1.water
2.fertility
3.potable
4.boiling

Answer 2

1.

a. land

b. dirty and waste

c. drinking water

d. chlorine

2.

a.false

b.false

c.false