Question 25

Sugar, salt, mustard oil, sand, sawdust, honey, chalk powder, petal of flower, soil, copper sulphate crystals, glucose, wheat flour are some substances given to Paheli. She wants to know whether these substances are soluble in water or not. Help her in identifying soluble and insoluble substances in water.

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Solution

Substances which completely dissolve in water are soluble in water. Substances soluble in water are sugar, salt, honey, copper sulphate crystals, glucose.

Substances which does not dissolve in water are insoluble in water. Substances insoluble in water are mustard oil, sand, sawdust, chalk powder, petals of a flower, soil, wheat flour.

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