Sources of Water MCQ – Wells MCQ – Tubewells MCQ – Environmental Engineering

21. Water free from impurities can be obtained from

1. Lakes
2. Reservoirs
3. Rivers
4. Springs

22. The yield of surface stream may be obtained by

1. recuperating test
2. pumping test
3. chemical method
4. all of these

23. The yield of a surface stream may be obtained by

1. cross-section velocity method
2. stream gauging
3. straight line curve
4. all of these

24. Water may not contain much impurities if its source is

1. reservoirs
2. stream flowing in plains
3. lake in lower regions
4. spring along hill slopes

25. Most important source of water for public water supply is from

1. Lakes
2. Ponds
3. Streams
4. Rivers

26. The percentage of fresh water available as polar ice/glaciers compared to total fresh water is

1. 30%
2. 69.61%
3. 0.261%
4. 0.04%

27. The source of surface water for supply to a community may be

1. a natural pond
2. a stream
3. a lake
4. any of the above

28. In leachate treatment, metals present in leachate can be removed by which treatment process?

1. Precipitation
2. Burning
3. Washing
4. Oxidation

29. The estimation of cumulative infiltration that may eventually become ground water recharge is defined as

1. water balance
2. abstraction
3. storage
4. run-off

30. Water from the following sources is likely to be hard

1. River
2. Lake
3. Deep well
4. Shallow well