Question

From the list of the following salts choose the salt that most appropriately fits the
description is given in the following:

[AgCl, MgCl₂, NaHSO₄, PbCO₃, ZnCO₃, KNO₃, Ca(NO₃)₂]

On heating, this salt gives a yellow residue when hot and white when cold

Answer 1

On heating, this salt gives a yellow residue when hot and a white residue when cold = ZnCO₃