MCQ Questions for Class 7 Science: Ch 16 Water - A Precious Resource

MCQ Questions for Class 7 Science: Ch 16 Water - A Precious Resource

1. Earth appear blue from sky due to presence of
(a) Desert
(b) Mountains
(c) Land
(d) Water
► (d) Water

2. Steam is which form of water?​
(a) solid
(b) liquid
(c) gas
(d) none of these
► (c) gas

3. Which of the following does not show water shortage?
(a) Taps running dry
(b) Long queues for getting water
(c) Marches and protests for demand of water
(d) A family gets three buckets of water per person per day
► (d) A family gets three buckets of water per person per day

4. Rainwater harvesting is a method of
(a) Collecting rainwater and directing into ground
(b) Producing water for future use
(c) Using rain water for daily purpose
(d) All of these
► (a) Collecting rainwater and directing into ground

5. Which of the following is traditional way to conserve water?
(a) Tube wells
(b) Bawris
(c) Rainwater Harvesting
(d) None of these
► (b) Bawris

6. What percent of your body weight is water?
(a) 50%
(b) 60%
(c) 70%
(d) 80%
► (c) 70%

7. Loss of water by plants is called
(a) Transpiration
(b) Transportation
(c) Condensation
(d) Evaporation
► (a) Transpiration

8. On which of the following day is World Water Day observed?
(a) 22 March
(b) 14 November
(c) 2 October
(d) 21 December
► (a) 22 March

9. In which season water scarcity is most acute?
(a) Summer season
(b) Winter season
(c) Rainy season
(d) Autumn season
► (a) Summer season

10. River Yamuna is polluted near Delhi due to
(a) Thermal plant on its bank
(b) Water animals
(c) Addition of untreated sewage
(d) Rivers joining it
► (c) Addition of untreated sewage

11. In irrigation, which technique reduces the water loss?
(a) Tube well system
(b) Planting crops in rainy season
(c) Canal system
(d) Drip irrigation
► (d) Drip irrigation

12. Which of the following will not help in conservation of water?
(a) drip irrigation
(b) planting more trees
(c) water treatment plant
(d) cutting trees to check water loss due to transpiration
► (d) cutting trees to check water loss due to transpiration

13. Plants loose water in form of
(a) Liquid
(b) Gases
(c) Snow
(d) Water vapour
► (d) Water vapour

14. Addition of harmful substance in water leads to
(a) Algal bloom
(b) Microbial growth
(c) High oxygen demand
(d) Water pollution
► (d) Water pollution

15. ‘Every Drop Counts’ is a slogan related to
(a) counting of drops of any liquid
(b) counting of water drops
(c) importance of counting
(d) importance of water
► (d) importance of water

16. The process of changing water vapour into water is called
(a) Boiling
(b) Condensation
(c) Evaporation
(d) Sedimentation
► (b) Condensation

17. The region covered by water is called ___________
(a) hydrosphere
(b) ionosphere
(c) atmosphere
(d) water park
► (a) hydrosphere

18. Which sector is major user of water in India?
(a) Textile sector
(b) Agricultural sector
(c) Leather sector
(d) Petrochemical sector
► (b) Agricultural sector

19. There is acute water shortage due to
(a) Overuse and misuse
(b) Climate change
(c) Global warming
(d) Excess evaporation
► (a) Overuse and misuse

20. There is acute shortage of water due to
(a) Lack of technique to purify water
(b) Growing population and overuse
(c) Melting of ice at poles
(d) Pollution of rivers
► (b) Growing population and overuse

21. The purest form of water is
(a) Hand pump water
(b) Subsoil water
(c) Spring water
(d) Rain water
► (d) Rain water

22. Seas and oceans are full of water on earth. However a very small percentage of water present on earth is available for us. This percentage is roughly.
(a) 0.006%
(b) 0.06%
(c) 0.6%
(d) 6%
► (a) 0.006%

23. Which of the following is a way to use water economically?
(a) Construction of bawris
(b) Rainwater harvesting
(c) Drip irrigation
(d) Infiltration
► (c) Drip irrigation

24. Which of the following inhibits the seepage of rainwater into ground?
(a) A pukka floor
(b) Playground
(c) Grass lawn
(d) Forest land
► (a) A pukka floor

25. Water is chlorinated to
(a) Kill germs
(b) Change colour
(c) Soften it
(d) Improve its taste
► (a) Kill germs
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