An example for a double salt is

Options

(a) potassium ferricyanide
(b) cobalt hexamine chloride
(c) cuprous sulphate
(d) Mohr’s salt

Correct Answer:

Mohr’s salt

Explanation:

Mohr’s salt is a double salt when dissolved in water it dissociates into its constituent ions. i.e. the individual components retain their identity.FeSO₄.(NH₄)₂SO₄.6H₂O → Fe²⁺ (aqueous) + 2NH₄⁺(aq) + 2SO₄⁻(aq) + 6H₂O.