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Q.

Is it true that zinc oxide is amphoteric in nature?


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a

True

b

False  

answer is A.

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Detailed Solution

The above statement is true.
Amphoteric oxides are those oxides which show basic as well as acidic characteristics. These oxides react both with acids and bases. Because it reacts with both acids and alkalis to produce salt and water, zinc oxide is an amphoteric oxide. The reaction of zinc oxide in acidic medium is:
ZnO + 2HCl → ZnCl2 + H2O
And the reaction of zinc oxide in basic medium is:
2NaOH + ZnO → Na2ZnO2 + H2O
 
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