10 gram sodium nitrate is dissolved in 35 gram saturated solution of sodium nitrate at 25°C temperature. Calculate solubility of sodium nitrate.

Classify the following into elements, compounds and mixtures.

Which of the following will show ‘Tyndall effect’ ? (a) Salt Solution (b) Milk (c) Copper Sulphate Solution (d) Starch Solution

Identify the solution among the following mixtures. (a) Soil (b) Sea Water (c) Air (d) Coal (e) Soda

Which of the following things are pure substances? (a) Ice, (b) Milk, (C) Iron, (d) Hydrochloric Acid, (e) Calcium oxide, (f) Mercury, (g) Brick, (h) Wood, (i) Air.

How would you confirm that a colourless liquid given to you is pure water ?