Solutions Class 12 MCQs Questions with Answers

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

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

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

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

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

6. The molal elevation constant depends upon:

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

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

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

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

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

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

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

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

15.  Atomic mass is equal to:

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

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

18. The term homogenous mixtures signifies that:

19. Isotonic solution are the solutions having the same:

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