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  4. Which of the following oxides reacts with HCl and NaOH ?

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Q. Which of the following oxides reacts with $ HCl $ and $ NaOH $ ?

Chhattisgarh PMTChhattisgarh PMT 2005

Solution:

$Z n O$ is an amphoteric oxide, it dissolves both in acid and alkalise to give zinc salt and zincates respectively.
$ZnO +2 HCl \rightarrow ZnCl _{2}+ H _{2} O$
$ZnO +2 NaOH \rightarrow \underset{\text { sodium }}{ Na _{2} ZnO _{2}}+ H _{2} O$