Solutions Class 12 MCQs Questions with Answers

1. The atmospheric pollution is generally measured in the units of:

2. When a solute is present in trace quantities the following expression is used:

3.  A 5% solution of cane-sugar (molecular weight = 342) is isotonic with 1% solution of substance A. The molecular weight of X is:

4. The molal elevation constant depends upon:

5. The term homogenous mixtures signifies that:

6. A plant cell shrinks when it is kept in a:

7.  People add sodium chloride to water while boiling eggs. This is to:

8. Which of the following units is useful in relating concentration of solution with its vapour pressure?

9. Isotonic solution are the solutions having the same:

10.  Among the following substances the lowest vapour pressure is exerted by:

11. Which of the following condition is not satisfied by an ideal solution?

12.  Out of molality (m), molarity (M), formality (F) and mole fraction (x), those which are independent of temperature are:

13.  Atomic mass is equal to:

14.  The boiling point of an azeotropic mixture of water and ethanol is less than that of water and ethanol. The mixture shows:

15. In case of electrolyte which dissociates in solution the Van’t Hoff’s factor, i is:

16. Which of the following fluoride is used as rat poison?

17. Mole fraction of glycerine C3H5(OH)3 in solution containing 36 g of water and 46 g of glycerine is:

18. Most of the processes in our body occur in:

19. A 500 g tooth paste sample has 0.2 g fluoride concentration. What is the concentration of fluorine in terms of ppm level?

20.  Partial pressure of a solution component is directly proportional to its mole fraction. This is known as: