Question
What is meant by demineralised water?
A.
Water free from cations and anions.
B.
Water free from minerals dissolved in it.
C.
Water free from impurities.
D.
Water free from $$N{a^ + }$$ and $${K^ + }$$ ions.
Answer :
Water free from cations and anions.
Solution :
Water free from cations $$\left( {C{a^{2 + }},M{g^{2 + }},{\text{etc}}.} \right)$$ and anions $$\left( {C{l^ - },SO_4^{2 - },HCO_3^ - ,{\text{etc}}.} \right)$$ is called deionised or demineralised water.