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Question

Zinc oxide reacts with Ca(OH)2 and H2SO4, thus it is called ________.


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


Since, Zinc oxide reacts with both acid and base, it is an amphoteric oxide.

With acid-
ZnO+H2SO4ZnSO4+H2O

With base-
ZnO+Ca(OH)2ZnCaO2+H2O


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