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Reactivity Series

Li, K, Ca...

Question

$L i$ , $K$ , $C a$ , $N a$ , $M g$ , $A l$ , $Z n$ , $F e$ , $P b$ , $C u$ , $H g$ , $A g$
Which metal will displace hydrogen from acids but not water?

L i

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N a

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C u

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A l

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Solution

The correct option is D $A l$
Aluminium doesn't react with water because, a thin oxidise layer is formed on it. But it reacts with acid and displace Hydrogen in it. Because, The acid react with acidic layer and remove it from Aluminium.

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