Permanent hardness of water may be removed by addition of
A. Alum
B. Sodium carbonate
C. Lime
D. Potassium Permangante
Answer: Option B
Solution(By Examveda Team)
Hardness can be removed by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column.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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