Question

In the neighbourhood of your school, hard water required for an experiment is not available. Select from the following groups of salts available in your school, a group each member of which, if dissolved in distilled water, will make it hard : (a) Sodium chloride, calcium chloride (b) Potassium chloride, sodium chloride (c) Sodium chloride, magnesium chloride (d) Calcium chloride, magnesium chloride

Answer 1

Answer:

d)Calcium chloride, magnesium chloride

Answer 2

Hello Students,

◆ Answer -

(d) Calcium chloride, magnesium chloride

● Explaination -

• Hard water contains salts of calcium and magnesium principally as bicarbonates, chlorides, and sulfates.
• In the option (D), choride salt of Ca and Mg are available.
• Thus, hard water should be prepared from calcium chloride and magnesium chloride.

Best luck dear. Hope this is useful...