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UPSC Prelims GS - 2018
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Question 81
MEDIUM
Correct:
+2
Incorrect:
-2
Which of the following is/are the possible consequence/s of heavy sand mining in river beds?
1. Decreased salinity in the river
2. Pollution of groundwater
3. Lowering of the water-table
Select the correct answer using the code given below:
a
1 only
b
2 and 3 only
c
1 and 3 only
d
1, 2 and 3
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