आधुनिक चर्मशोधन उद्योगों में ऐसी कौनसी भारी धातु पाई जाती है, जो विषैली होती है? - Study24x7
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Gajendra Rathore
15 Jan 2020 10:19 AM study24x7 study24x7

आधुनिक चर्मशोधन उद्योगों में ऐसी कौनसी भारी धातु पाई जाती है, जो विषैली होती है?

A

निकेल

B

जस्ता

C

 क्रोमियम

D

 सीसा

SSC
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