152) If the amount of a nonelectrolyte dissolved is doubled, but that of solvent is quadrupled, the elevation in the boiling point of the solution will be:

153) The molal boiling point constant for water is 0.51^oC kg⁄mol. When 0.1 mol of sugar is dissolved in 200 gm of water, the solution boils under a pressure of 1 atm at

154) KBr is 80% dissociated in solution. The freezing point of 0.5m solution is:

155) An aqueous solution is 1m in KI. What change will cause the vapour pressure of the solution to increase?

156) A solution of sucrose has been prepared by dissolving 68.5 gm of sucrose in 1000 gm of water. The freezing point of the solution obtained will be: