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1
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
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
A pressure cooker reduces cooking time for food because
A
boiling point of water involved in cooking is increased
B
the higher pressure inside the cooker crushes the food material
C
cooking involves chemical changes helped by a rise in temperature
D
heat is more evenly distributed in the cooking space
3
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
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
If liquids A and B form an ideal solution
A
the entropy of mixing is zero
B
the free energy of mixing is zero
C
the free energy as well as the entropy of mixing are each zero
D
the enthalpy of mixing is zero
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