CBSE BOARD X, asked by Dev0000, 1 year ago

Which sodium compound is used for removal of permanent hardness of
water ?
(A) NaHCO 3
(B) NaOH
(C) Na 2SO4
(D) Na2CO3
. 10H2O

Answers

Answered by AlokYadav100

0

Answer

D is correct answer ....

Answered by abhay6122

2

It may be NaOH

B ) NaOH

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