Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 5. Compounds of Common Use
9. Chemical in Common Salt. The main chemical present in common salt is sodium chloride. It is obtained by neutralization reaction of sodium hydroxide with HCl (Hydrochloric acid). It is obtained on a large scale from sea water. It is found in large deposits called rock salt. 10. Uses of Common Salt. (i) It is used in daily food. (ii) It is used as preservative (iii) It is used for manufacture of Na metal and Cl2 (g) by electrolysis in molten state. (iv) It is used for manufacture of caustic soda. (v) It is used for manufacture of baking soda and washing soda by Solvay process.