Which pollutant may lead to 'Black foot disease' ?
Correct answer: B. As
- A. Cd
- B. As
- C. Hg
- D. Cu
Explanation
Blackfoot disease is a severe form of arsenic poisoning associated with long-term consumption of arsenic-contaminated water. Students may choose mercury because it is also a toxic heavy-metal pollutant, but arsenic is specifically linked with Blackfoot disease.
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