Question

2. You are provided with the following materials: Turmeric, honey, mustard oil, water, glucose, rice flour, and groundnut oil.

Make any three pairs of substances where one substance is soluble in the other and any three pairs of substances where one substance remains insoluble in the other substance.

Answer 1

Part 1: Classification of materials on the basis of solubility in water

(a). Soluble materials: Soluble materials are those materials which completely dissolve in water and form a homogenous mixture.

(b). Insoluble liquids: Soluble materials are those materials which do not completely dissolve in water even after prolonged stirring.

Part 2: Pairs of soluble and insoluble materials

Three pairs of soluble materials:

(i). Sugar in water

(ii). Glucose in water

(iii). Common salt in water

Three pairs of insoluble materials:

(i). Oil in water

(ii). Sand in water

(iii). Turmeric in water