0 votes
in Chemical Process Calculation by
Permanent hardness of water can be removed by

a) Boiling

b) Adding Ca(OH)2

c) Boiling it with Na2CO3

d) None of these

1 Answer

0 votes
by

Permanent hardness of water can be removed by Boiling it with Na2CO3

Related questions

0 votes
asked Feb 9, 2022 in Image Classification by GeorgeBell
+1 vote
asked Jan 10, 2022 in MarkLogic by DavidAnderson
...