Water and its importance Worksheet-3

Water and its importance Worksheet-3

Multiple -Choice Question:

21. Which of the following is not a drawback of desalination plants?

(a) Desalinated water may cause cancer

(b) Energy intensive

(c) Negative impact on marine life

(d) Expensive

22. What percentage of our water supply goes to farming?

(a) 32%                (b) 55%                (c) 70%                (d) 93%

23. What minerals are found in the run-off from agricultural land and treated and untreated sewage effluents, which are highly responsible for eutrophication of water bodies?

(a) Phosphorous and carbon          (b) Nitrogen and phosphorus

(c) Potassium and arsenic              (d) Iron and manganese

24. How much water is used to flush an average toilet?

(a) 1 gallon          (b) 2 gallons        (c) 3 gallons        (d) 4 gallons

25. On an average, what percentage of water in the home is lost through leaks?

(a) 9.3 %              (b) 2.9%               (c) 15%                (d) 13.7 %

26. Water that has been used once but is still clean enough to do other jobs is called:

(a) Holy water     (b) Green water  (c) Gray water     (d) Reusable water

27. Evaporation occurs because of:

(a) Gravitational pull of moon       (b) Wind

(c) The magnetic force of sun        (d) Solar energy

28. What is the project to clean up the polluted waters of the Ganga called?

(a) GPP                (b) GOP                (c) GAP                (d) GCP

29. Three forms of precipitation are:

(a) ash, sleet, rocks                         (b) tornados, earthquakes, volcanoes

(c) rain, hail, snow                           (d) All of these

30. Where does most of the water go after it is precipitated?

(a) Water is soaked up too quickly by the soil

(b) Water is absorbed by the plants

(c) It flows towards a larger body of water

(d) It goes deep into the soil bed

Answer Key:

21. (a)
22. (c)
23. (b)
24. (c)
25. (d)
26. (c)
27. (d)
28. (c)
29. (c)
30. (c)