Water Quality

Q.

Which of the following is a pH range for drinking water?

1. 6.5 to 8.5

2. 7.5 to 9.5

3. 6.5 to 7.5

4. 8.5 to 9.5

Q.

The total earth’s surface covered by water is

1. $75\%$

2. $60\%$

3. $85\%$

4. $50\%$

Q.

Which of the following is the major source of pure water for us?

1. Lakes

2. Groundwater

3. Atmosphere

4. Ice caps

Q.

As we know, water is one of the most essential substance for the existence of life. A large part of the body weight of all living beings is made up of _____.

1. Air

2. Soil

3. None of these

4. Water

Q.

Which of the following isn't direct a source of fresh water?

1. Rivers

2. Oceans

3. Lakes

4. Ground Water

Q.

Which of the following are sources of freshwater?

1. Rivers

2. Polar ice caps

3. Ground water

4. Oceans

Q.

3. Ocean water is saline yet we call it as water source. Why?

Q.

Which of the following pair is not the source of fresh water?

1. Glaciers and icebergs

2. Lakes and rivers

3. Ponds and groundwater

4. Seawater and ocean water

Q. Water which is fit or safe for drinking is known as water.

1. sea
2. potable
3. sewage