General Science Chemistry MCQs

Q.  Which of these cannot be the reason for the permanent hardness in water?

a. calcium sulphate
b. calcium chloride
c. calcium bicarbonate
d. None of the above


ANSWER: See Answer
 
The permanent hardness in water is due to the presence of calcium sulphate/calcium chloride and/or magnesium sulphate/magnesium chloride in water.
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