Q.

Zn+2 dissolves in excess of NaOH due to the formation of

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a

Soluble Zn(OH)2

b

Soluble Na2Zn(OH)4

c

Soluble NaZn(OH)3

d

ZnO

answer is B.

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Detailed Solution

Zn+2+2NaOH→Na2ZnO2+H2Na2ZnO2+2H2O→Na2Zn(OH)4
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