Name the product formed when $Z n$ reacts with $N a O H$ .

Z n (O H)_{2}

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N a_{2} Z n O_{2}

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H_{2}

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H_{2} O

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Solution

The correct option is A $Z n (O H)_{2}$
Zinc is a transition metal which shows moderate reactivity. Zinc reacts with NaOH to form sodium zincate with the evolution of hydrogen gas.
$2 N a O H (a q) + Z n (s) Δ ⟶ N a_{2} Z n O_{2} (a q) + H_{2} (g)$

Hence, option $(A)$ is correct.

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