railway RRB JE (CBT I + CBT II) Mock Test 2024 General Knowledge Ecology and Environment Environmental pollution
Consider the following statements regarding mercury pollution:
1. Gold mining activity is a source of mercury pollution in the world.
2. Coal-based thermal power plants cause mercury pollution.
3. There is no known safe level of exposure to mercury.
How many of the above statements are correct?
1
Only one
2
Only two
3
All three
4
None