Question
Q49. Consider the following statements regarding mercury pollution:
- Gold mining activity is a source of mercury pollution in the world.
- Coal-based thermal power-plants cause mercury pollution.
- Three is no known safe level of exposure to mercury
How many of the above statements are correct?
- Only one
- None
- All three
- None
Answer: 3
Detailed Explanation
Mercury is widely used in artisanal and small-scale gold mining (ASGM) to extract gold from ore.
During this process, mercury binds with gold to form an amalgam, which is later heated, releasing toxic mercury vapors.
Mercury is a highly toxic heavy metal with no safe level of exposure.
Even low concentrations can cause neurological damage, developmental disorders, and kidney damage.