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Q.

Which of the following statements is true in terms of uses of Washing Soda ?
1. glass, soap and paper industries.
2. manufacture of sodium compounds such as borax.
3. cleaning agent for domestic purposes.
4. removing permanent hardness of water.
5. storage of water

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a

 1 & 2

b

 1, 2, 3 & 4

c

2, 4 & 5

d

1, 2, 4 & 5

answer is B.

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Detailed Solution

  • Sodium carbonate decahydrate (Na2CO3.10H2O) is also referred to as washing soda.
  • Washing soda is used to produce glasses, papers and soaps. 
  • It helps to remove the permanent hardness of the water. 
  • It is used as a cleaning medium for household purposes. 
  • It is used to manufacture sodium compounds such as borate.
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