Which of the following is not a physical change? a) Boiling of water b) Rusting of iron c) Melting of ice d) Dissolving sugar in water

Which of the following is a compound? a) Air b) Carbon c) Saltwater d) Soil

During summer, water kept in an earthen pot becomes cool because of the phenomenon of (a) diffusion (b) transpiration (c) osmosis (d) evaporation.

Milk of Magnesia is an example of: a) True Solution b) Colloidal Solution c) Suspension d) None of the above

Which of the following statements is true about a solution? a) It is a heterogeneous mixture. b) It contains only solute. c) It has a fixed composition. d) It cannot be separated by physical methods.

Which of the following mixtures is stable and does not separate on standing? a) True Solution b) Colloidal Solution c) Suspension d) None of the above

In a true solution, the solute particles are: a) Large and visible b) Medium-sized and dispersed c) Very small and evenly distributed d) Not uniformly mixed

Which of the following is an example of a pure substance? a) Sea water b) Sand c) Oxygen gas d) Colored candy

Which of the following is most suitable for summer? (a) Cotton(b) Nylon(c) Polyester(d) Silk.

The process of changing a substance from a solid to a liquid state is called: a) Melting b) Freezing c) Evaporation d) Condensation

Which of the following is a homogeneous mixture? a) Orange juice with pulp b) Sand and water c) Saltwater d) Oil and vinegar

Which of the following is a pure substance? a) Air b) Soil c) Mercury d) Vinegar