Surface Water

Q.

What is ground water ?

Q.

$\mathrm{KF}$ combines with $\mathrm{HF}$ to form ${\mathrm{KHF}}_2$. The compound contains the__________ species.

Q.

What steps can be taken to conserve groundwater? [3 MARKS]

Q.

State the ways to reduce water consumption at home.

Q.

Answer in one word/ few words.

A substance that exists in all the three states of matter

Q. Which among the following are not a source of fresh water?

1. Rivers
2. Oceans
3. Lakes
4. Seas

Q.

Please describe an activity to show that natural water contains air.

Q.

What is the source of water for each of the following? [3 MARKS]
(a) Wells
(b) Groundwater
(c) Atmosphere

Q. Water from which of the following sources can be used for watering plants?

1. Rainwater
2. Seawater
3. Groundwater
4. River water

Q.

Write an article on save water

Q. Why is this line made for ocean water?

"Water water everywhere, not any drop to drink.”

1. Because ocean water is not available to humans.

2. Because ocean water is saline and not suitable to drink.

3. Because ocean water contains pollutants.

4. Because ocean water is very sweet and not suitable to drink.

Q. ______ water is almost pure.

1. Pond
2. Rain
3. Ocean
4. Lake

Q.

Floods cause extensive damage to

1. Crops

2. Property and human life

3. Domestic animals

4. All of the above

Q.

Which of the following is/are not the source(s) of fresh water?

1. Oceans

2. Lakes

3. Ground Water

4. Rivers

Q. Seawater is ______.

1. sweet
2. salty
3. fresh
4. healthy

Q. Find the missing one.

Freshwater: River; Salty water: ?

1. Pond
2. Glacier
3. Sea
4. Lake

Q. Which of the following is a famous river in Haridwar?

1. Brahmaputra
2. Kaveri
3. Ganga
4. Yamuna

Q.

To pass a gas from one vessel to another, you will use

1. Delivery tube

2. Glass jar

3. Glass rod

4. Test tube

Q.

Define the following processes

(a) Condensation

(b) Evaporation

(c) Transpiration

Q.

The approx. percentage of water in human body is:

1. 80 %
2. 65 %
3. 70 %
4. 40 %

Q. What are the various sources of water?

Q.

Water seeps through the spaces in the ground. Where does the water get collected? What happens to this water? [3 MARKS]

Q. Explain the various ways in which we can conserve water at home and school.

Q. In which season does the water in water bodies freeze?

1. Summer
2. Winter
3. Rainy
4. Autumn

Q.

24 (e) State whether the following statements are true or false.

The amount of water vapor in the air is always the same.

1. True
2. False

Q.

Sorry for disturbing but I want to know that in how many ways we can save water?

Q. Percentage of fresh water found in lakes, ponds, swamps, streams and rivers is

1. 22.4%
2. 77.2%
3. 7.7%
4. 0.3%

Q.

What percentage of world's freshwater is found in rivers, ponds and lakes?

1. 1
2. 5
3. 20
4. 35

Q.

The total earth’s surface covered by water is :

1. 75%

2. 60%

3. 85%

4. 50%

Q. Which sources does a water supply board in a city use to collect water?​

1. Rivers and Lakes
2. Seas and Oceans
3. Both (A) and (B)
4. Seas and Rivers