All of the following are the examples of soluble salts except,
A
sodium sulphate
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B
potassium sulphate
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C
calcium carbonate
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D
sodium chloride
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Solution
The correct option is C calcium carbonate Sodium sulphate, potassium sulphate and sodium chloride are soluble in water. Calcium carbonate is formed as a precipitate in the reaction and hence, it is insoluble in water.