Q.12. Enlist four uses of washing soda.
(HP
Ans. Uses of washing soda are given below :
(1) Washing soda is used in glass, soap and paper industry
(ii) It is used in preparation of sodium compounds such as borax.
(iii) It is used as cleaning agent as an ingredient of washing powder.
(iv) It is used for removing permanent hardness of water.
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Answer:
iii is the answer
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