An example for a double salt is

Options

A. potassium ferricyanide
B. cobalt hexamine chloride
C. cuprous sulphate
D. Mohr's salt

Answer

D

Explanation

Mohr.s salt is a double salt when dissolved in water it dissociates into its contituent ions. i.e. the individual components retain their identity.
`FeSO_(4)*(NH_(4))_(2)SO_(4)*6H_(2)OtoFe^(2+)` (aqueous)`+2NH_(4)^(+)(aq)+2SO_(4)^(--)(aq)+6H_(2)O`