Chemistry
Grade-10
Easy
Question
Which of the following raw material is used for the manufacture of bleaching powder?
- Sodium bicarbonate
- Sodium chloride
- Sodium hydroxide
- Calcium chloride
Hint:
The raw materials required for the manufacture of bleaching powder are NaCl, Ca(OH)2.
The correct answer is: Sodium chloride
The raw materials required for the manufacture of bleaching powder are NaCl, Ca(OH)2.
Preparation of bleaching powder:
Step 1
2NaCl(aq) + 2H2O(l) 
2NaOH(aq) + Cl2(g) + H2(g)
Step 2
Cl2(g) + Ca(OH)2(aq) CaOCl2(aq) + H2O
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