लोहे की खानों में काम करने � – McqOptions

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1.	लोहे की खानों में काम करने वाले मजदूरों में लौह सक्रितमयता रोग होने का कारण है -
A.	सीसा
B.	मरकरी
C.	कैडमियम
D.	सिलिका
Answer» E.

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