Water

Q. A water body of dense ice and snow found on mountains is known as ________.

1. glacier
2. pond
3. river
4. ocean

Q. Which of the following activities require water?

1. Bathing
2. Drinking
3. Sleeping
4. Cooking

Q. What are compounds? Give two examples.

Q.

How is water pollution caused by human defecation in the open? How is this solved?

Q. Oceans and seas make up $71\%$ of the Earth’s surface. What percentage of this total quantity is available for human consumption?

1. $50\%$
2. $10\%$
3. $5\%$
4. $1\%$

Q.

Sea/oceans water can not be used for domestic use because it contains

1. Soluble salts

2. Dust

3. Insoluble salts

4. Acids

Q.

3. Which natural source of water is highly saline?

Q.

Earth's surface has ____ percent of fresh water and ______ percent of saline water.

1. 97, 3

2. 2.5, 97

3. 50, 50

4. 71, 29

Q. Place the following statements in a proper order to form a meaningful paragraph. ​

​

(a)Which in turn decreases the seepage of rainwater into the ground. ​

(b) This decreases the open areas like park, and playgrounds. ​

(c) Increasing population create demand for construction of houses, shops, offices, roads and pavements. ​

(d) This results in depletion of water table and creates scarcity of more water. ​

Q. _____ and _____ contains the solid form of water.

1. Oceans, seas
2. Glaciers, ice sheets
3. Glaciers, atmosphere
4. Poles of earth, rivers

Q. Epsom salt has _______ molecules of water of crystallization.

1. two
2. three
3. five
4. seven

Q. What are the different forms of precipitation than rain?

Q. What are compounds? Give two examples.

Q.

3. What do you understand by groundwater level?

Q. Clouds are ___ collections of tiny water droplets and crystallized water molecules.

1. tiny
2. massive
3. small
4. negligible

Q.

Earth's surface has ____ percent of fresh water and ______ percent of saline water.

1. 2.5, 97

2. 71, 29

3. 97, 3

4. 50, 50

Q. Total earth's surface covered by water is :

1. 71%
2. 60%
3. 85%
4. 50%

Q. Which of the following natural resource covers 71% of Earth's surface?

1. Land
2. Water
3. Forests
4. Fossil fuels

Q. Which of the following measures can we take to conserve water?

1. Prevent leakage
2. Use leaky pipes
3. Domestic
   overuse
4. Prevent overflow
5. Water treatment
6. Daily car wash
7. Manage runoff
8. Store rainwater

Q. Air is a mixture of ___________.

1. Compounds
2. Elements
3. Colorless gases
4. None of the above

Q. Clouds are ___ collections of tiny water droplets and crystallized water molecules.

1. small
2. tiny
3. massive
4. negligible

Q. Which of the following measures can we take to conserve water?

1. Use leaky pipes
2. Domestic
   overuse
3. Manage runoff
4. Water treatment
5. Store rainwater
6. Prevent leakage
7. Daily car wash
8. Prevent overflow