Question 3

(a) What are insoluble substances?

(b) Name a few solid substances that are insoluble in water.

(c) Name a few liquid substances that are insoluble in water.

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Solution

(a) Substances that do not mix with water and do not disappear even on stirring for a long time then those substances are insoluble.

(b) Sand and flour are examples of solid substances that are insoluble in water.

(c) Kerosene oil, petrol and edible oils are insoluble in water.

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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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Question 3 (a) What are insoluble substances? (b) Name a few solid substances that are insoluble in water. (c) Name a few liquid substances that are insoluble in water.

(a) Substances that do not mix with water and do not disappear even on stirring for a long time then those substances are insoluble. (b) Sand and flour are examples of solid substances that are insoluble in water. (c) Kerosene oil, petrol and edible oils are insoluble in water.

Question 3

(a) What are insoluble substances?

(b) Name a few solid substances that are insoluble in water.

(c) Name a few liquid substances that are insoluble in water.

(a) Substances that do not mix with water and do not disappear even on stirring for a long time then those substances are insoluble.

(b) Sand and flour are examples of solid substances that are insoluble in water.

(c) Kerosene oil, petrol and edible oils are insoluble in water.