Both temporary and permanent hardness of water can be rem...
Both temporary and permanent hardness of water can be removed by
boiling
distillation
filtration
decantation
Correct answer is B
No explanation has been provided for this answer.
Temporary hardness of water is caused by the presence of ...
Hardness of water does not ...
Permanent hardness of water is caused by the presence of ...
Sulphydryl oxidase is used for ...
Acid used mostly for removal of milk stone is ...
Permanent hardness of water may be removed by the addition of ...
Secondary treatment uses __________ to consume wastes. ...