Question

What is potable water? discuss briefly any three methods that can be used to make water safe for drinking?

Answer 1

The water which is safe for drinking called as potable water.
*Three methods that can be used to make water safe for drinking are->
1.water should be boiled before drinking.
2.dirty or salty water should be treated before drinking.
3.water also be boiled before drinking.

Answer 2

Water which is free from germs and impurities and fit for drinking is called potable water.

1. By explosion water to ultraviolet rays = ultraviolet light act on the water and kills the germs.

2. By treating with chemicals = potassium permanganate is a germicide. It kills the germs.

3. Chlorination = it is done by adding chlorine tablets or bleaching powder to the water. It kills disease germs.

4. By boiling = water can be boiled for few minutes,to kill the germs present in it.

5. By filtration =water can be passed through candle filters made of porcelain. Most of the bacteria are trapped in this way.