নিম্নের কোনটি কপারের কেলাসের সংকেত

A $CuSO_{4 }5H_{2}O$

B $CuSO_{4 }7H_{2}O$

C $CuSO_{4 . }3H_{2}O$

D $CuSO_{4 . }6H_{2}O$

Solution

Correct Answer: Option A

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