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Solution


Q.

Match the chemical substances given in Column (A) with their appropriate application given in Column (B):

Column ‘A’ Column ‘B’
(A) Bleaching Powder (i) Preparation of glass
(B) Baking soda (ii) Production of H2 and Cl2
(C) Washing soda (iii) Decolourisation
(D) Sodium chloride (iv) Antacid

 

 
1 A–(ii) B–(i) C–(iv) D–(iii)  
2 A–(iii) B–(ii) C–(iv) D–(i)  
3 A–(iii) B–(iv) C–(i) D–(ii)  
4 A–(ii) B–(iv) C–(i) D–(iii)  

Ans.

(3)

Bleaching powder (CaOCl2):
It is used for bleaching or decolourisation of clothes. Bleaching powder on reaction with water decomposes and releases chlorine, which acts as an oxidising, bleaching and disinfecting agent.
Baking soda (NaHCO3):
It is used as an antacid for relieving stomach acidity. They react with excess acid in the stomach and neutralises it.
Washing soda(Na2CO3):
It is used in preparation of glass, soap and paper industries.
Sodium chloride (NaCl):
Aqueous sodium chloride is used for the production of H2 and Cl2 gases on electrolysis.