Q1Multiple choice
Which of the following activity does not involve use of water?
- (a)Washing clothes
- (b)Bathing
- (c)Cleaning utensils
- (d)Drying wet clothes
Show answer
(d) Drying wet clothes
Chapter 14 – Water
Class 6 Science · 22 questions · 22 with answers
Questions
Q2Multiple choice
In which of the following activities will you use minimum amount of water?
- (a)Bathing
- (b)Brushing teeth
- (c)Washing clothes
- (d)Mopping a room
Show answer
(b) Brushing teeth
Q3Multiple choice
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
Show answer
(c) two glasses
Q4Multiple choice
Water in our tap comes from a
- (a)river
- (b)lake
- (c)well
- (d)river, lake or well 86 E XEMPLAR PROBLEMS
Show answer
(d) river, lake or well 86 E XEMPLAR PROBLEMS
Q5Multiple choice
In which of the following case 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.
Show answer
(c) A glass of water kept in a room.
Q6Multiple choice
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 vapour.
Show answer
(d) release water vapour.
Q7Multiple choice
Clouds are
- (a)tiny drops of water floating in air.
- (b)mixture of dust and water vapour.
- (c)particles of water vapour.
- (d)rain drops in air.
Show answer
(a) tiny drops of water floating in air.
Q8Multiple choice
Wells are fed by
- (a)pond water.
- (b)lake water.
- (c)rain water.
- (d)ground water.
Show answer
(d) ground water.
Q9Multiple choice
Floods cause extensive damage to
- (a)crops.
- (b)property and human life.
- (c)domestic animals.
- (d)all of the above. WATER 87
Show answer
(d) all of the above. WATER 87
Q10Multiple choice
“Catch water where it falls” is the basic idea behind
- (a)recycling of water.
- (b)making dams to store water.
- (c)rain water harvesting.
- (d)condensation of water vapour.
Show answer
(c) rain water harvesting.
Q11Very short answer
Look at Fig. 14.1. Fig. 14.1 Write down activities shown in this figure in which water is being used.
This question refers to a figure in the original PDF.
Show answer
(i) Bathing (ii) Washing clothes
Q12Very short answer
Write any two activities which require more than a bucket of water.
Show answer
(i) Washing 10 clothes (ii) Irrigating a crop field
Q13Very short answer
Write any two activities which require less than one bucket of water. 88 E XEMPLAR PROBLEMS
Show answer
(i) Brushing your teeth (ii) Washing a handkerchief SHORT ANSWER QUESTIONS
Q14Short answer
Why do wet clothes placed on a clothes line get dry after some time? Explain.
Show answer
Water present in wet clothes is converted into water vapour due to evaporation and leaves them dry.
Q15Short answer
Water kept in sunlight gets heat from sun and is evaporated. But how does water kept under the shade of a tree also gets evaporated? Explain.
Show answer
Air around us gets heated from sunlight. This warm air provides heat for evaporation of water kept in the shade.
Q16Short answer
How do the areas covered with concrete affect the availability of ground water?
Show answer
Areas covered with concrete reduce the seepage of rain water into the ground and this reduces the availability of ground water.
Q17Short answer
Why is there a need for conserving water? Give two reasons.
Show answer
(i) Increasing population need more water. (ii) Availability of water is decreasing day-by-day.
Q18Fill in the blanks
Fill in the blanks selecting words from the following list snow, rain, clouds, vapour, evaporation, transpiration. Water, as _____ goes into atmosphere by the processes of ______ and _____ and forms ________, which on condensation fall in the form of ______ and _______.
Show answer
vapour, evaporation, transpiration, clouds, snow, rain. 138 E XEMPLAR PROBLEMS LONG ANSWER QUESTIONS
Q19Long answer
Most of the water that falls on the land as rain and snow, sooner or later goes back to a sea or an ocean. Explain how it happens?
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Hint: Snow/Rain→Streams/Rivers→Sea/Ocean.
Q20Long answer
Draw a diagram to show how sea water reaches a lake or pond.
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Hint: Draw diagram showing evaporation of water from sea, which form clouds in the sky. These clouds form rain. Rain water flows into lake or pond.
Q21Long answer
Dissolve two spoons of common salt in half a cup of water. Now if you want to get the salt back, what will you do?
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Hint: Water may be removed from the salt solution by heating it on a stove or keeping it in the sun in a plate for few hours.
Q22Long answer
Explain the process of rooftop rain water harvesting with the help of a suitable diagram.
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Hint: ANSWERS 139