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Standard X

Chemistry

Zinc Ion

A metal X r...

Question

A metal $X$ reacts with water to produce a highly combustible gas $Y$ , and a solution $Z$ . Another metal $P$ reacts with $Z$ to give the same gas $Y$ . $X, Y, Z$ and $P$ respectively are:

Z n, H_{2}, Z n (O H)_{2}, A l

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N a, H_{2}, N a O H, Z n

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K, H_{2}, K O H, A l

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L i, H_{2}, L i O H, K

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Solution

The correct option is C $N a, H_{2}, N a O H, Z n$
Sodium metal $(X)$ reacts with water to produce a highly combustible gas hydrogen gas $(Y)$ and sodium hydroxide solution $(Z)$ .
$2 N a (X) + 2 H_{2} O \to 2 N a O H + H_{2} (Y)$
On the other hand, zinc $(P)$ reacts with sodium hydroxide solution $(Z)$ gives sodium zincate along with liberation of same hydrogen gas $(Y)$ .
$2 N a O H (Z) + Z n (P) \to {N a}_{2} Z n O_{2} + H_{2} (Y)$

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A metal X reacts with water to produce a highly combustible gas Y, and a solution Z. Another metal P reacts with Z to give the same gas Y. X, Y, Z and P respectively are:

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