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Contamination of water of tanning industries is due to:
E
Editor
Sep 18, 2022
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Contamination of water of tanning industries is due to:
Difficulty: Easy
A:
Cr (III)
B:
Cr (VI)
C:
Mn (III)
D:
Mn (VII)
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ID: 63273dbdca83163ac3a16fcf