The following is the list of methods for the preparation of salts.​

(A) Direct combination of two elements.​

(B) reaction of dilute acid with a metal.​

(C) Reaction of dilute acid with an insoluble base.​

(D) Titration of dilute acid with a solution of soluble base.​

(E) Reaction of two solutions of salts to form a precipitate.​

Choose from the above list A to E, the best method of preparing the following salts by giving a suitable equation in each case:​

3. Sodium sulphate​

The following is a list of methods for the preparation of salts.

A - direct combination of two elements.

B - reaction of a dilute acid with a metal.

C - reaction of a dilute acid with an insoluble base.

D - titration of a dilute acid with a solution of soluble base.

E - reaction of two solutions of salts to form a precipitate.

Choose from the above list A to E, the best method of preparing the following salts by giving a suitable equation in each case :

1. Anhydrous ferric chloride, 2. Lead chloride,

3. Sodium sulphate, 4. Copper sulphate.