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9. Whe n a substance is dissolved in a solvent, the vapour pressure of the solvent is decreased.. This results in

a. An increase in the boiling point of the solution

b. a decrease in the boiling point of solvent

c. The solution having a higher freezing point than the solvent

d. The solution having a lower osmotic pressure than the solvent

Ans. a

PrevPrevious5. A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of 290mm at 300 K. The vapour pressure of propyl is 0.6 it vapour pressure at the same temperature will be

Next6. At 300 K, when a solute is added to a solvent its vapour pressure over the mercury reduces from 50 mm to 45 mm. The value of mole fraction of solute will beNext

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