सीमेंट फैक्ट्री के मजदूरो� – McqOptions

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1.	सीमेंट फैक्ट्री के मजदूरों को खतरा
A.	लेकिमिया
B.	अस्थि मज्जा रोग
C.	अभ्रक
D.	साइटोसिलिकोसिस
Answer» B. अस्थि मज्जा रोग

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