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Amphoteric Oxides of Metals

Zinc oxide re...

Question

Zinc oxide reacts with $C a {(O H)}_{2}$ and $H_{2} S O_{4}$ , thus it is a/an ________.

A

Metallic oxide

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B

Metal hydroxide

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C

Rust

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D

Amphoteric oxide

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Solution

The correct option is D
Amphoteric oxide

Zinc oxide reacts with acids and bases, it is an amphoteric oxide.
$C a (O H)_{2} is a base and H_{2} S O_{4} is an acid . Z n O (s) + H_{2} S O_{4} (a q) \to Z n S O_{4} (a q) + H_{2} O (l) Z n O (s) + 2 C o (O H)_{2} (a q) \to C a Z n O_{2} (a q) + H_{2} O (l)$

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