Uses of Water

Q.

Question 1

Which of the following activities does not involve use of water?

(a) Washing clothes

(b) Bathing

(c) Cleaning utensils

(d) Drying wet clothes

Q.

Does water help regulate body temperature?

Q. Why should we water our plants at dusk or early in the morning?

1. More evaporation occurs during these times.
2. Plants absorb more water during these times.
3. Less evaporation occurs during these times.
4. Flower blooms during these times.

Q. Water should never be used to extinguish oil fires. Which option provides the best justification for this statement?

1. Water is heavier than oil. On spraying water, it sinks and oil floats, and the fire continues.
2. Water is lighter than oil and it floats on the surface of the oil.
3. Water reacts with oil and forms a new flammable compound.
4. Oil fire is very intense converting water into steam and evaporating it.

Q. Aquatic animals and plants:

1. have special organs that store oxygen.
2. have to come out of water to breathe.
3. use carbon dioxide present in the air for respiration
4. use the oxygen dissolved in water for respiration.

Q. Human body contains approximately _____ of water.

1. 50%
2. 70%
3. 80%
4. 90%

Q.

Question 3

The quantity of water required to produce one-page of your book is
(a) one bucket
(b) ten buckets
(c) two glasses
(d) few drops

Q.

How does water maintain the body temperature of humans?

Q.

Which of the following activity does not involve the use of water?

1. Washing clothes

2. Bathing

3. Cleaning utensils

4. Drying wet clothes

Q.

Question 2

In which of the following activities will you use the minimum amount of water?

(a) Bathing

(b) Brushing teeth

(c) Washing clothes

(d) Mopping a room

Q. Which of the following will be an advantage of inter-linking rivers in India?

1. Lot of people will gain employment.
2. Floods will take place uniformly throughout the country.
   
3. Water will be distributed uniformly.
4. India will become a technically advanced country.
   

Q. For which of the following purposes is saline water NOT used?
(i) For washing clothes
(ii) For drinking
(iii) For agriculture.

1. Only (i) and (ii)
2. Only (ii) and (iii)
3. (i), (ii) and (ii)
4. Only (i) and (iii)

Q. Write any two activities which require less than one bucket of water.

Q. In which of the following activities will you use a minimum amount of water?

1. Bathing
2. Brushing teeth
3. Washing clothes
4. Mopping a room

Q. Which among the following process doesn't involve the usage of water?

1. Bathing
2. Growing plants
3. Cooking food
4. Lighting of fire

Q. Write any two activities which require more than a bucket of water.

Q. The percentage of water in a human body is:

1. 60%
2. 80%
3. 70%
4. 50%

Q.

Aquatic animals use _________ in water for respiration

1. All of these

2. Dissolved air

3. Dissolved carbon dioxide

4. Oxygen atom present in water molecule

Q.

Question 13

Write any two activities which require less than bucket of water.

Q.

3. Write any two activities which require less than one bucket of water.

Q. Which of the following activity helps in reducing wastage of water?

1. 
2. 
3. 
4. 

Q.

Question 3
List the uses of water in various activities.

Q. Identify the reason behind shortage of water.

1. Heavy rainfall
2. Flood
3. Scanty rainfall
4. Hailstorm

Q.

Question 11

Look at the figure

Write down the activities shown in this figure in which water is being used.

Q.

(i) Give the reasons for water scarcity?

(ii) Mention a few steps to conserve water.

Q. For which of the following purposes is saline water NOT used?
(i) For washing clothes
(ii) For drinking
(iii) For agriculture.

1. Only (i) and (ii)
2. Only (ii) and (iii)
3. Only (i) and (iii)
4. (i), (ii) and (ii)

Q. Arrange the stages of the water cycle in ascending order.

1. Evaporation
2. Condensation
3. Precipitation
4. Collection

Q. How we should wash vegetables and dishes?

1. Using a hose
2. Using a washbasin
3. Using a tap
4. Using a shower

Q. Write the temperature in Kelvin scale that ice and water co-exist together.

Q. Temporary hardness of water is due to the presence of

1. Calcium bicarbonate.
2. Sodium carbonate.
3. Potassium carbonate.
4. Magnesium hydride.