Two important uses of caustic soda :
(a) It is used in papery soap, rayon and textile industries.
(b) It is used in refining of petroleum.
(ii) Two important uses of sodium carbonate :
(a) It is used in the manufacture of glass, borax and caustic soda.
(b) It is used in water softening, laundering and cleaning.
(iii) Two important uses of quick lime :
(a) It is used in the purification of sugar and
(ii) It is used in the manufacture of dye stuffs.