The method that cannot be used for removing permanent har...
The method that cannot be used for removing permanent hardness of water is
adding sodium carbonate
distillation
adding caustic soda
boiling
Correct answer is D
No explanation has been provided for this answer.
Crude petroleum is converted to useful products by the process of? ...
What is the chemical symbol for Nihonium? ...
Nitrogen is prepared on a large scale by the ...
Which of these properties gives a solid its definite shape? ...
In which of the following is the entropy change positive? ...