General Knowledge - General Science - Discussion
Discussion Forum : General Science - Elements and Metals (Q.No. 47)
47.
Permanent hardness of water can be removed by adding
Discussion:
19 comments Page 1 of 2.
Sandy said:
1 decade ago
@pooja
Permanent hardness is caused by chlorides of ca , mg and is removed by sodium carbonate i.e. washing soda and also by ion exchange.
Permanent hardness is caused by chlorides of ca , mg and is removed by sodium carbonate i.e. washing soda and also by ion exchange.
(1)
Ganesh said:
6 years ago
Adding alum is correct or not? Please tell me.
(1)
SIDHYA said:
7 years ago
Why may permanent hardness of water be removed by the addition of washing soda?
(1)
Akhila said:
8 years ago
Why adding by removing the hardness of water?
(1)
Pooja said:
1 decade ago
I am not getting your point. Please explain.
(1)
Soundaria said:
1 decade ago
Permanent hardness is caused by chlorides mg is removed by sodium carbonate eg: washing soda.
Raj said:
1 decade ago
Potassium permanganate is used for permanent removal of water hardness.
Jai said:
1 decade ago
Permanent hardness is caused by chlorides mg is removed by sodium carbonate eg: washing soda.
AAKASH PATHAK said:
1 decade ago
Washing soda is a sodium carbonate its formula is the NA2CO3.
Mohd ahmad said:
1 decade ago
Temporary hardness can be removed by bleaching powder:
CaOCl2+H2O = Ca(OH)2+Cl2.
CaOCl2+H2O = Ca(OH)2+Cl2.
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