Water: Natural Resource

Q.

(a) Name four kinds of suspended impurities present in river water.

(b) Name two kinds of dissolved impurities present in river water.

(c) Why is river water not fit for drinking purposes?

Q.

Name the four main sources of water.

Q. Most of the water on the Earth's surface is found in .

1. oceans and seas

2. underground sources

3. rivers

4. glaciers

Q. What is the water of crystallization of blue vitriol?

1. 5

Q.

Which among the following is the purest form of natural water?

1. Rainwater

2. Groundwater

3. River water

4. Lake water

Q. Freshwater reserves like rain, snow available for human utility is about of the total water available on Earth.

1. 1%
2. 15%
3. 10%
4. 75%

Q.

Respected sir,

In the chapter of water, I didn't understand the masks of the water. The percentage of earth water then fresh water or ice sheets ground water, etc. Can you explain it briefly to me.

Sincerely,

Syed jaabir