Which of the following statement(s) is/are correct?

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Cis $- [Pt {({NH}_{3})}_{2} {Cl}_{2}]$ is used as an anticancer species.

Carboxypeptidase-A is an enzyme and contains zinc.

In the silver electroplating of copper, $K [Ag ({CN}_{2}]$ is used in place of ${AgNO}_{3}$ •

${CN}^{-}$ ions show the reducing as well as complexing properties towards metal species.

answer is A.

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Detailed Solution

Cis $- [Pt {({NH}_{3})}_{2} {Cl}_{2}]$ is used as an anticancer species because it has the ability to damage deoxyribonucleic acid (DNA) in cancer cells by binding to the N7 reactive center on purine residues, which prevents cell division and causes apoptotic cell death.

Carboxypeptidase-A is an enzyme and contains zinc because the enzyme's activity can be decreased by removing zinc, and it can be increased by including ions of zinc, cobalt, ferrous, nickel, and manganese.

In the silver electroplating of copper, $K [Ag (CN)_{2}]$ is used in place of ${AgNO}_{3}$ because In the silver plating of copper, $K [Ag (CN)_{2}]$ is used instead of ${AgNO}_{3}$ . The reason is less availability of ${Ag}^{+}$ ions, as Cu cannot dissolves Ag from $n {[Ag (CN)_{2}]}^{-}$ ions.