UPSC Prelims GS - 2020

Question 96
DIFFICULT
Correct:
+2
Incorrect:
-2

Steel slag can be the material for which of the following?
1. Construction of base road
2. Improvement of agricultural soil
3. Production of cement
Select the correct answer using the code given below:

    a
    1 and 2 only
    b
    2 and 3 only
    c
    1 and 3 only
    d
    1, 2 and 3