নিচের কোনটি ট্যানিং এজেন্ট?

A [Al(H2O)6]2(SO4)3

B [Mg(H2O)6]2(SO4)2

C [Cr(H2O)6]2(SO4)3

D [Ca(H2O)6]2(SO4)2

Solution

Correct Answer: Option C

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