|Storing water in the form of groundwater is often considered to be a better option than storing it in surface reservoirs. What can be the possible reasons behind it?|
|1. Unlike surface water, groundwater can always be free of contaminants.|
|2. Evaporation of surface reservoirs is higher as compared to groundwater.|
|3. Stagnated surface water provides a breeding ground for disease vectors.|
|4. Even nearby wells can be recharged and water need not be conveyed to each well.|
|Select the correct answer using the codes given below.|
A) 1 and 4
B) 2, 3 and 4
C) 1, 2 and 3
D) All of these
Correct Answer: B
Solution :[b] Groundwater sources cannot always be free of contaminants. However, it usually contains lesser contaminants. Except Statement 1, all the other statements are correct for example, the groundwater of Ganges Plan is severely polluted at regions with naturally occurring arsenic.
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