(i) Caustic soda –
(a) It is used in the manufacture of soap, paper, artificial silk and a number of chemicals.
(b) It is used in petroleum refining and purification of bauxite
(ii) Quick time –
(a) It is used in the manu facture of dye stuffs.
(b) It is used in the manu facture of sodium carbonate from caustic soda.
