A mixture of potassium nitrite and ammonium chloride on heating liberates the gas

When a mixture of potassium cyanate and ammonium chloride is heated, it gives

On heating, a mixture of potassium cyanate and ammonium chloride gives :

A mixture of sodium chloride (salt) and ammonium chloride can be separated by

Give equations to show what happens when a mixture of potassium cyanate and ammonium sulphate is strongly heated. Name the reaction. ""^(**"**)

A mixture of sodium chloride and ammonium chloride can be separated by ____ method.