The method that cannot be used for removing permanent hardness of water is
A. adding sodium carbonate
B. distillation
C. adding caustic soda
D. boiling
Answer: Option D
Solution(By Examveda Team)
Permanent hardness of water cannot be removed by simple physical methods like boiling, filtering and distillation.Related Questions on Chemistry
Which of the following phenomenon is considered responsible for Global Warming?
A. Greenhouse effect
B. Fire in coal mines
C. Dry farming
D. Monsoon
E. Trade winds
The nucleus of an atom consists of
A. electrons and neutrons
B. electrons and protons
C. protons and neutrons
D. All of the above
The number of moles of solute present in 1 kg of a solvent is called its
A. molality
B. molarity
C. normality
D. formality
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