UPSC Prelims GS - 2018

Question 81
MEDIUMCorrect: +2Incorrect: -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