Very Short Answer Type Questions (1 mark)
1. Define distillation
(CBSE 2012)
2. Why is it not possible to distinguish the particles of the solute from those of solvent
in a true solution?
3. Define chromatography
(CBSE 2019)
4. What happens when a hot saturated solution is cooled?
(CBSE 2012)
6. What is the main difference between aqueous solution and non-aqueous solution?
B. Short Answer Type Questions (2 marks)
1. How will you separate a mixture of two miscible liquids kerosene and petrol? The
difference in their boiling points is less than 25 K. Explain.
(CBSE 2016)
2. What are the two components of a solution? Write two properties of a solution
3. A sugar syrup of mass 214.2 g contains 34.2 g of sugar. Calculate the concentration
of sugar in the syrup.
4. Classify each of the following as element, compound or mixture:
Gold, Air, Marble, Milk, Sugar.
(CBSE 2012)
5. 65 g of glucose is dissolved in 435 g of water. Calculate the concentration of the
solution in terms of mass by mass percentage.
6. How much water should be added to 15 g of salt to obtain 15% salt solution?
(CBSE 2011, 2013)
7. Why does solution of sodium chloride not show Tyndall effect whereas the mixture
of water and milk shows?
8. Compare in tabular form the properties of true solution and colloids with respect to Tyndall effect and stability. (CBSE 2013)​