Zinc sulphate reacts with ammonium hydroxide, the products formed are:
Zinc hydroxide and ammonium sulphate
When zinc sulphate reacts with ammonium hydroxide, a white gelatinous ppt. of zinc hydroxide is formed along with ammonium sulphate.
ZnSO4Colourless solution+2NH4OH→Zn(OH)2White,gelatinous ppt.+(NH4)2SO4Colourless