Chemistry Class 10 Chapter 11 - Homeostasis - -1

Chemistry Class 10 Chapter 11 - Homeostasis - -1

1. How much of the total earth's crust is covered by water?

99%
29%
71%
50%

2. The amount of freshwater present on earth is?

0.2%
29%
5%
71%

3. What is the total amount of water on earth in billion cubic kilometers?

1.33
3.33
4.33
2.33

4. The most abundant salt in the sea water is?

None of these
Potassium chloride
Calcium chloride
Sodium chloride

5. The amount of sodium chloride in sea water is?

3.4%
50%
1.33%
0.2%

6. The only planet in our solar system that contains water is the?

Venus
Earth
Jupitor
Murcery

7. Water boils at ___ degree centigrade?

100
50
10
0

8. Which one of the following is not the property of water?

Tasteless
Coloured
Odourless
Transparent

9. water freezes at ___ degree centigrade at sea level?

10
0
50
100

10. Water can exist in the state of?

Solid
Liquid
All of these
Gas

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