Civil Services Chhattisgarh State Service (CGPSC) Prelims Mock Test 2025 General Knowledge Ecology and Environment Environmental pollution
Which of the following are the anthropogenic sources of mercury pollution?
1. Volcanic eruptions
2. Oceans
3. Combustion of coal
4. Biomass burning
5. Oil refining
Select the correct answer from the code given below.
1
1, 2 and 3 only
2
3, 4 and 5 only
3
1, 4 and 5 only
4
1, 2, 3, 4 and 5