The water would be considered as hard based on the Calcium Carbonate(CaCO3) content in it. If the carbonate content in water tested 60ppm, the water is already hard.Question 15Select one:TrueFalse

You want to test for hardness of water but hard water is not available inthe laboratory. Which of the following compounds may be dissolved inpure water to make it hard ?(i) Hydrogen Carbonate of Sodium(ii) Sulphate of Magnesium(iii) Chloride of Calcium(iv) Carbonate of Sodium

What is hard water? What compounds are in water to make it hard?

A  3L water sample has a hardness of 300ppm by mass CaCO3. The grams of Calcium Carbonate CaCO3 is:Question 34Select one:a.1.0gb.0.20gc.0.30gd.1.20g

Temporary hardness in water is mainly due to the presence of:a.Calcium sulfateb.Calcium chloridec.Calcium bicarbonated.Magnesium bicarbonate

What is meant by the expression ‘water hardness’? Explain.