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1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
For which of the following parameters the structural isomers C2H5OH and CH3OCH3 would be expected to have the same values? (Assume ideal behaviour)
A
Heat of vaporization
B
Gaseous densities at the same temperature and pressure
C
Boiling points
D
Vapour pressure at the same temperature
2
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
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 2003
MCQ (Single Correct Answer)
+4
-1
In a 0.2 molal aqueous solution of a weak acid HX the degree of ionization is 0.3. Taking kf for water as 1.85, the freezing point of the solution will be nearest to
A
-0.360oC
B
-0.260oC
C
+0.480oC
D
-0.480oC
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