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In this post, we are providing you with the most important questions of Science exam from the chapter Water. You should know answers to these questions in all likelihood to score good marks in Class 6 Science exam.

The latest sample papers have been designed as per the latest blueprints, syllabus and examination trends. Sample papers should be practiced in examination condition at home or school and also show it to your teachers for checking or compare with the answers provided.

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Questions:

Fill up / 1 Marks

5 x 1 = 5

In our country, most of the rainfall occurs during the ________ season.

The rainwater can be used to ________ groundwater.

Water, as ___________goes into atmosphere by the processes of___________ and___________ and forms___________ which on condensation fall in the form of___________ and___________.

State for each of the following whether it is due to evaporation or condensation. Steam rising from wet clothes while they are ironed.

The process of changing water into its vapour is called__________

True or False

5 x 1 = 5

Water changes to ice at 0°C.

(a)

False

(b)

True

Water is non-renewable natural resource

(a)

True

(b)

False

Water vapour is present in the environment during monsoon season only.

(a)

True

(b)

False

Water vapour enters into air through evaporation.

(a)

False

(b)

True

10.

The evaporation of water takes place only in the sunlight.

(a)

True

(b)

False

Generic 2

5 x 2 = 10

11.

Why do some water pipes burst in winter?

12.

Why do wet clothes placed on a clothesline get dry after some time? Explain.

13.

Is oxygen soluble in water? How is this important?

14.

Name two main processes which transfer water present on the earth into water vapour continuously.

15.

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

Generic 3

5 x 3 = 15

16.

Water is one of our most precious commodities and no life can survive without it It has been predicted that water scarcity will become the subject of "Wars"in the near future. Write any two ways in which water is getting polluted. Write any two measures to stop water pollution at your level

17.

Sachin was very hungry one day. He went to kitchen where his mom was cooking food. He suddenly opened the lid of freshly cooked rice and found tiny drops of water on the under side of the lid. He became curious to know the cause of the presence of water drops on the under side of lid.
(a) Why was droplets present on the lid of container?
(b) What will happen if lid is opened during cooking?
(c) Do you observe any values in Sachin? Name them.

18.

How do the areas covered with concrete affect the availability of groundwater?

19.

Why is there a need for conserving water? Give two reasons.

20.

Why do wet clothes placed on a clothes line dry after sometime? Explain.

Generic 5

3 x 5 = 15

21.

Explain the process of rooftop rain water harvesting with the help of a suitable diagram.

22.

State different uses of water

23.

Draw a diagram to show how sea water reaches a lake or pond?

Multiple Choice Question

10 x 1 = 10

24.

About 97% of the water on the earth is

(a)

salt water

(b)

pure water

(c)

polluted water

(d)

drinking water

25.

Observe the given figure and tell which process is taking place

(a)

Condensation

(b)

Evaporation

(c)

Transpiration

(d)

None of the above

26.

Water harvesting is a technique of

(a)

Flooding water

(b)

Farming water

(c)

Stopping flood

(d)

Saving rain water

27.

Catch water where it falls is the basic idea behind

(a)

recycling of water

(b)

makinq dams to store water

(c)

rainwater harvesting

(d)

condensation of water vapour

28.

Floods cause extensive damage to

(a)

crops

(b)

property and human life

(c)

domestic animals

(d)

All of the above

29.

Wells are fed by

(a)

pond water

(b)

lake water

(c)

rainwater

(d)

groundwater

30.

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

31.

Transpiration is a process in which plants

(a)

receive water from soil

(b)

absorb water vapour from air

(c)

prepare food from water

(d)

release water in the form of water vapour

32.

In which of the following cases, evaporation of water will be slowest?

(a)

A tray of water kept in sunlight

(b)

A kettle of water kept on a burner

(c)

A glass of water kept in a room

(d)

A bucket of water kept on rooftop

33.

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

(a)

Washing clothes

(b)

Bathing

(c)

Cleaning utensils

(d)

Drying wet clothes

1 Marks

5 x 1 = 5

34.

Look at Fig.

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

35.

What is fog?

36.

How does water cycle help in maintaining global climate?

37.

Which property of water is responsible to maintain the body temperature?

38.

Water is present on earth in which states of matter?

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Answers Key:

Fill up / 1 Marks

5 x 1 = 5

()
monsoon

()
recharge

()
vapours, evaporation, transpiration, clouds, rains, snow/hails

()
Evaporation

()
evoporation

True or False

5 x 1 = 5

(a)
False

(b)
False

(b)
False

(a)
False

10.

(b)
False

Generic 2

5 x 2 = 10

11.

Some water pipes burst in winters because during winter, cold develops enormous pressure in the pipes and due to this high pressure, water pipes burst.

12.

Wet clothes placed on a clothesline get dry after some time due to evaporation. In this process, water present in wet clothes is converted into water vapour which is released into atmosphere .

13.

Yes, oxygen is soluble in water. This is the source of oxygen supply for aquatic habitats.

14.

These processes are evaporation and transpiration.

15.

Two activities which require use of more than one bucket of water is washing more than 10 clothes and irrigating a crop field.

Generic 3

5 x 3 = 15

16.

Water is getting polluted:
(i) By industrial waste
(ii) By human activities
Measures to stop water pollution:
(i) We should not throw waste materials and garbage into water.
(ii) We should sensitize people about harmful effects of water pollution.
Associated Value : We should discourage any activity in our life that may cause water pollution

17.

(a) The droplets appear due to the process of condensation, i.e. when hot vapours strike the lid surface they cool down and become drops.
(b) If lid is opened during cooking, steam will be seen rising from the vessel which is another phase of water.
(c) Sachin is intelligent, curious and has interest in acquiring new facts .

18.

Areas covered with concrete affect the availability of groundwater because concrete reduces the seepage of rainwater into the ground which leads to reduction in the availability of groundwater.

19.

There is a need for conserving water because of the following reasons
(i) Increasing population is creating more demand for usable water.
(ii) Availability of freshwater is decreasing day-by-day.

20.

Wet clothes placed on a clothes line dry after sometime because water present in wet clothes is converted into water vapour and released in atmosphere due to evaporation which leaves them dry.

Generic 5

3 x 5 = 15

21.

In this process, the rain water is collected from the rooftop to a storage tank, through pipes. This water may contain soil from the roof and need filtering before it is used. Instead of collecting rain water in the tank, the pipes can go directly into a pit in the ground. This then seeps into the soil to recharge the ground water.

22.

Water is used:
(i) for drinking and cooking
(ii) for bathing and cleaning.
(iii) in agriculture, to produce food.
(iv) in Industries, to perform different activities

23.

Sea water reaches a lake or pond is represented by a diagram:

Multiple Choice Question

10 x 1 = 10

24.

(a)
salt water

25.

(b)
Evaporation

26.

(d)
Saving rain water

27.

28.

(d)
All of the above

29.

(d)
groundwater

30.

31.

(d)
release water in the form of water vapour

32.

33.

(d)
Drying wet clothes

1 Marks

5 x 1 = 5

34.

()
The activities, in which water is being used are given below:
(i) Bathing
(ii) Washing of clothes

35.

()
Fog is a form of condensed water vapours on dust particles in air and it occurs near the surface of the earth during winter season

36.

()
Water cycle plays an important role in maintaining the global climate as :
(i) Water cycle maintains the temperature on land.
(ii) Water cycle regulates the groundwater level.

37.