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MCQ Questions for Class 6 Science Chapter 14 Water with Answers

 

Water Class 6 MCQs Questions with Answers

I. Choose the correct option.

Question 1.
How much percentage of water does a human body contains?
(a) 60%
(b) 70%
(c) 80%
(d) 90%

Answer

Answer: (b) 70%


Question 2.
Water is used for
(a) bathing
(b) cooking
(c) drinking
(d) all of these

Answer

Answer: (d) all of these


Question 3.
The water in oceans cannot be used because
(a) it is salty
(b) it is harmful
(c) it is toxic
(d) it is acidic

Answer

Answer: (a) it is salty


Question 4.
Which of the following are the sources of water?
(a) Rivers
(b) Ponds
(c) Lakes
(d) All of these

Answer

Answer: (d) All of these


Question 5.
The place where underground water comes out on the surface of earth on its own is called
(a) rainwater
(b) spring
(c) sea level
(d) glacier

Answer

Answer: (b) spring


Question 6.
Which of the following is the largest source of water?
(a) Sea
(b) Ocean
(c) Pond
(d) Lake

Answer

Answer: (b) Ocean


Question 7.
Potable water is
(a) ocean water
(b) groundwater
(c) river water
(d) pond water

Answer

Answer: (b) groundwater


Question 8.
Which is not a part of water cycle?
(a) Cloud formation
(b) Rain
(c) Drinking by animals
(d) Sun

Answer

Answer: (c) Drinking by animals


Question 9.
Which one of the following is a purest form of water?
(a) River water
(b) Groundwater
(c) Rainwater
(d) Ocean water

Answer

Answer: (c) Rainwater


Question 10.
The process of conversion of water into vapours is called
(a) transpiration
(b) evaporation
(c) condensation
(d) none of these

Answer

Answer: (b) evaporation


Question 11.
The process by which plants lose water is
(a) photosynthesis
(b) translocation
(c) transpiration
(d) transportation

Answer

Answer: (c) transpiration


Question 12.
The amount of water recommended by the UN for drinking, washing, cooking and maintaining proper hygiene is
(a) 50 litres per person per day
(b) 60 litres per person per day
(c) 70 litres per person per day
(d) 80 litres per person per day

Answer

Answer: (a) 50 litres per person per day


Question 13.
Boiling point of water is
(a) 100°C
(b) 99°C
(c) 101°C
(d) 102°C

Answer

Answer: (a) 100°C


Question 14.
The water which had escaped from the earth as vapour returns to the earth in the form of
(a) precipitation
(b) evaporation
(c) infiltration
(d) condensation

Answer

Answer: (a) precipitation


Question 15.
Heavy rains may cause
(a) floods
(b) drought
(c) rainlessness
(d) both (a) and (c)

Answer

Answer: (a) floods


Question 16.
Which is a result of condensation of water vapours?
(a) Rain
(b) Snowfall
(c) Hail
(d) Tiny water droplets

Answer

Answer: (d) Tiny water droplets


Question 17.
When we step out from an air-conditioned car, on a humid day, our spectacles becomes misty and we cannot see anything clearly. This happens due to a process known as
(a) decantation
(b) evaporation
(c) precipitation
(d) condensation

Answer

Answer: (d) condensation


II. Fill in the Blanks

Question 1.
More than ………………. of the earth’s surface is covered with water.

Answer

Answer: two-thirds


Question 2.
………………. is needed for drinking, bathing, washing our clothes and many more functions.

Answer

Answer: Water


Question 3.
About ………………. of the total earth’s water is available for use.

Answer

Answer: 0.01%


Question 4.
“Catch water where it falls” is the basic idea behind ………………. harvesting.

Answer

Answer: rainwater


Question 5.
The rivers get their water from the melting of snow lying on the peaks of snow mountains called ……………….

Answer

Answer: glaciers


Question 6.
Region below the ground which is saturated with water is known as ……………….

Answer

Answer: water table


Question 7.
The water cycle is also known as ……………….

Answer

Answer: hydrologic cycle


Question 8.
Ice, water and ………………. are the three states of same material.

Answer

Answer: gas


Question 9.
Water is considered as ………………. resource on the earth.

Answer

Answer: renewable


Question 10.
Water vapours get continuously added to atmosphere due to evaporation and ……………….

Answer

Answer: transpiration


Question 11.
The process of conversion of vapours into liquid is known as ……………….

Answer

Answer: condensation


Question 12.
Falling of rain is also called ……………….

Answer

Answer: precipitation


Question 13.
Water drops present on grass during winter morning is called ……………….

Answer

Answer: dew


Question 14.
Ocean act as a ………………. for large number of plants and animals.

Answer

Answer: habitat


Question 15.
Lack of rain causes ……………….

Answer

Answer: drought


III. True or False

Question 1.
Chemically lodestone is oxides of iron.

Answer

Answer: True


Question 2.
It is possible to obtain an isolated south pole of a magnet.

Answer

Answer: False


Question 3.
Magnetite is a natural magnet.

Answer

Answer: True


Question 4.
Magnet was discovered by Newton.

Answer

Answer: False


Question 5.
A wooden material can be magnetised.

Answer

Answer: False


Question 6.
If we break a bar magnet into two then each piece will have two poles.

Answer

Answer: True


Question 7.
Compass needle is made of a magnet.

Answer

Answer: True


Question 8.
Heat cannot destroy magnetic properties of a magnet.

Answer

Answer: False


Question 9.
There is a maximum attraction in middle of a bar magnet.

Answer

Answer: False


Question 10.
Our earth behaves as a huge magnet.

Answer

Answer: True


IV. Match the items given in column I suitably with those given in column II.

Column IColumn II
1. Ice(a) Due to lack of rain
2. Oceans(b) Due to excess of rain
3. Drought(c) The solid form of water
4. Flood(d) Sources of saline water
5. Purest form of water(e) Present in human beings
6. 70% water(f) Are covered with ice
7. 90% water(g) Rainwater
8. Poles(h) Present in tomatoes
9. Water cycle(i) Formed during winters
10. Dew(j) Continuous movement of water in Earth’s atmosphere
Answer

Answer:

Column IColumn II
1. Ice(c) The solid form of water
2. Oceans(d) Sources of saline water
3. Drought(a) Due to lack of rain
4. Flood(b) Due to excess of rain
5. Purest form of water(g) Rainwater
6. 70% water(e) Present in human beings
7. 90% water(h) Present in tomatoes
8. Poles(f) Are covered with ice
9. Water cycle(j) Continuous movement of water in Earth’s atmosphere
10. Dew(i) Formed during winters


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