answers to the MCQs on "Solutions" for Class 12

 Here are the answers to the MCQs on "Solutions" for Class 12:

1. (d) Both b and c
2. (c) Zero
3. (a) Ideal solutions only
4. (a) Decreasing temperature and increasing pressure
5. (d) Electrical conductivity
6. (a) ΔH = 0, ΔV = 0
7. (b) 2
8. (d) 1M KCl
9. (b) Moles of solute per kilogram of solvent
10. (d) Nature of the solute
11. (a) Lowering of vapour pressure
12. (c) Both a and b
13. (b) Mole fraction of each component
14. (b) Number of solute particles
15. (c) Ethanol and water
16. (b) Molality
17. (b) It is a colligative property
18. (b) Decreases
19. (c) Acetone and chloroform
20. (b) Nature of the solute

These answers correspond to the MCQs provided for board exam practice.