Question

Activity TO FIND OUT WHETHER THE GIVEN MATERIAL OR SUBSTANCE IS SOLUBLE OR INSOLUBLE IN WATER MATERIALS REQUIRED : Sugar, chalk powder, washing soda, sand, kerosene, lemon juice etc. PROCEDURE : Take six test tubes. Fill each of them to half with water. Place them on a test-tube stand. Add a pinch of sugar, chalk powder, washing soda and sand each in separate test tubes. To the fifth test-tube, add 2-3 mL of kerosene, and in the sixth test-tube, add 2-3 mL of lemon juice Shake each test-tube well and put them back on to the test- tube stand. Observe after 1-2 minutes. What do you observe ? 2 Do you know Sand Sugar Washing Chalk Kerosene Lemon soda powder juice Classifying materials as soluble or insoluble in water The two liquids zohich do not Hissolve in one another are called enmiscible liquids Particles of sugar and washing soda have disappeared. Thus, sugar and washing soda are soluble in water * Chalk powder and sand particles are left as such. Thus, chalk powder and sand are insoluble in water. Kerosene forms a separate layer on the surface of water. Thus, kerosene is insoluble (immiscible) in water. * Lime-juice and water form a single layer. Thus lemon juice is soluble (miscible) in water. CONCLUSION : On the basis of solubility in water, Sand and chalk powder are insoluble in water Sugar and washing soda are soluble in water Kerosene is immiscible with water * lemon juice is miscible with water​

Answer 1

• Sand is insoluble in water
• Sugar is soluble in water
• Washing soda is soluble in water
• Chalk powder is insoluble in water
• Kerosene is insoluble in water
• Lemon juice is soluble in water