Methods of Purifying Water

Q.

Chlorination is a commonly used chemical method for killing germs in the water. State true or false. Correct if wrong statement.

1. True
2. False

Q.

How is water purified before being supplied to our homes?

Q. Why should you not drink fresh water directly from the tap?

1. It contains harmful microbes.
2. It is not tasty.
3. It is salty.
4. It is too bitter.

Q. Most of the impurities in water are not visible to the naked eyes.

1. False
2. True

Q. Bleach solution is used to purify water. It contains in it.

1. chlorine
2. sugar
3. salt

Q.

What is Greywater?

Q. Which among the following water is fit for drinking?

1. Tap water
2. Salty water
3. Purified water
4. Dirty water

Q. The given picture shows the method of water _________.

1. wastage
2. pollution
3. purification
4. conservation

Q.

2. Water from natural resources is not supplied directly to us. Why?

Q. is the easiest method to clean water.

1. Freezing
2. Boiling
3. Melting

Q. How do you make freshwater suitable for drinking?

1. Boiling
2. Cooling
3. Filtering
4. Freezing

Q. Match the water purification methods to the way they carryout purification.

1. Boiling
2. High temperature
3. Bleach solution
4. Chlorine
5. Water purifier
6. UV rays

Q. Boiling helps in ____ harmful microorganisms in water.

1. spreading
2. growing
3. nourishing
4. killing

Q. Which of the following help us in getting clean water?

1. Boiling water
2. Filtration
3. Bleach solution
4. Portable filter
5. Water Purifier
6. Dumping garbage
7. Detergents
8. Industrial waste

Q. Why should we avoid purifying drinking water using bleaching solution?

Q. Select the compound used to purify water?

1. Oil
2. Salt
3. Sugar
4. Chlorine