Which metal easily give $H_{2}$ gas when reacts with $N a O H$ ?

M g

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Z n

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C u

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A g

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Solution

The correct option is A $Z n$
Zinc will react with Sodium Hydroxide from Sodium Zincate. In this reaction, Zinc will not displace sodium from sodium hydroxide, but will displace Hydrogen as shown below:

This reaction is accompanied by an evolution of Hydrogen gas.

$Z n + N a O H \to N a_{2} Z n O_{2} + H_{2}$

So, the correct option is $B$

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Similar questions

When NaOH reacts with metal a X, the following reaction takes place:

$N a O H + X \to N a_{2} Z n O_{2} + Y$

Identify X and Y.

H_{2}

H_{2}

Which of the following will liberate H $_{2}$ when reacting with NaOH?

M n

M g

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