Water Resources

Q.

Which gas is most abundant in air?

Q. The three states of water are interchangeable.

1. True
2. False

Q.

What is a water reservoir

Q.

We can survive for some time without air but we cannot survive even for a few minutes without food. Correct the statement if wrong.

Q.

Which irrigation technique can be effectively used to minimise the amount of water required for agriculture?

1. Canal irrigation

2. Hand pump irrigation

3. Excessive irrigation

4. Drip irrigation

Q.

Air supports life. Give reasons.

Q. Choose the artificial source of water.

1. River
2. Ocean
3. Lake
4. Reservoir

Q.

3. Which one is the purest form of water?

1. River water

2. Groundwater

3. Rainwater

4. Ocean water

Q. Groundwater contains very less impurities and dissolved salts in it.

1. False
2. True

Q. Which of the following is not a source of wastewater?

1. Houses
2. Industries
3. Hospitals
4. Water wells

Q. Groundwater contains very less impurities and dissolved salts in it.

1. False
2. True

Q. What do you mean by water scarcity. Give the reasons for water scarcity.