defence exam Agniveer Navy MR Mock Test Series 2025 General Science Biology Human body

कौन-सा प्रदूषक 'ब्लैकफुट रोग' का कारण बन सकता है?

1
कैडमियम (Cd)
2
पारा (Hg)
3
आर्सेनिक (As)
4
तांबा (Cu)
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