Question

Zinc carbonate +
ammonium chloride arrow zinc hydroxide +ammonium carbonate

Answer 1

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The question is wrong.

It should be :

Zinc Carbonate + Ammonium Chloride ------> Zinc Chloride + Ammonium Carbonate

$\mathsf{{ZnCO_3} \ + \ 2{NH_4Cl}}$ --------> $\mathsf{{ZnCl_2} \ + \ {(NH_4)}_2CO_3}$

This is a double displacement reaction.

^^"