Calgon is used for removal of
...Calgon is used for removal of
sodium carbonate
permanent hardness of water
potassium carbonate
none of these
Correct answer is B
No explanation has been provided for this answer.
Temporary hardness of water may be removed by adding ...
Application of quaternary ammonium compounds as sanitizing agents tends to ...
Coliform bacteria in water is an indication of the presence of ...
Zeolite softening process removes ...
The activated sludge process consists of returning a portion of the clarifier ...