AIEEE 2005 | Solutions Question 142 | Chemistry | JEE Main - ExamSIDE.com

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1

AIEEE 2005

MCQ (Single Correct Answer)

+4

-1

Benzene and toluene form nearly ideal solutions. At 20 ^oC, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20 ^oC for a solution containing 78 g of benzene and 46 g of toluene in torr is

A

50

B

25

C

53.5

D

37.5

2

AIEEE 2005

MCQ (Single Correct Answer)

+4

-1

Equimolar solutions in the same solvent have

A

Same boiling point but different freezing point

B

Same freezing point but different boiling point

C

Same boiling and same freezing points

D

Different boiling and different freezing points

3

AIEEE 2004

MCQ (Single Correct Answer)

+4

-1

Which of the following liquid pairs shows a positive deviation from Raoult’s law?

A

Water – hydrochloric acid

B

Acetone – chloroform

C

Water – nitric acid

D

Benzene – methanol

4

AIEEE 2004

MCQ (Single Correct Answer)

+4

-1

Which one of the following statements is false?

A

Raoult’s law states that the vapour pressure of a components over a solution is proportional to its mole fraction

B

Two sucrose solutions of same molality prepared in different solvents will have the same freezing point depression

C

The correct order of osmotic pressure for 0.01 M aqueous solution of each compound is BaCl₂ > KCl > CH₃COOH > sucrose

D

The osmotic pressure ($$\pi$$) = MRT, where M is the molarity of the solution

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