JEE CHEMISTRY UNIT 05
QUIZ NO 3
TOTAL QUESTIONS = 20
1. The boiling point elevation of a solution is directly proportional to
A. Normality
B. Density
C. Molality
D. Molarity
2. The number of ions produced by one formula unit of BaCl2 in solution is
A. 4
B. 2
C. 1
D. 3
3. Which of the following is an example of an azeotropic mixture?
A. Ethanol and water
B. HCl and water
C. Acetone and benzene
D. Acetone and chloroform
4. The elevation in boiling point of a solution is
A. Inversely proportional to molality
B. Directly proportional to molality
C. Dependent on molecular size
D. Independent of molality
5. Raoult's law is applicable to
A. Ideal solutions
B. Non-ideal solutions
C. Colloidal solutions
D. Electrolyte solutions
6. If two solutions have the same osmotic pressure, they are
A. Isotonic
B. Hypotonic
C. Hypertonic
D. Saturated
7. Henry's law constant increases with
A. Increase in solubility
B. Decrease in temperature
C. Decrease in solubility
D. Increase in temperature
8. The freezing point depression constant (Kf) depends on
A. Nature of the solvent
B. Concentration of solute
C. Nature of the solute
D. Temperature
9. Which of the following is an example of a colligative property?
A. Molarity
B. Boiling point elevation
C. Density
D. Viscosity
10. The van't Hoff factor (i) is equal to 1 for
A. Non-electrolytes
B. Strong electrolytes
C. Colloidal solutions
D. Weak electrolytes
11. Which of the following represents isotonic solutions?
A. Solutions with equal density
B. Solutions with equal osmotic pressure
C. Solutions with equal boiling points
D. Solutions with equal freezing points
12. What is the vapor pressure of an ideal solution if the mole fraction of solvent is 0.8 and its pure vapor pressure is 100 mmHg?
A. 80 mmHg
B. 0 mmHg
C. 20 mmHg
D. 100 mmHg
13. If a solution is hypertonic to a cell, water will
A. Move randomly
B. Move out of the cell
C. Not move
D. Move into the cell
14. The relation between osmotic pressure (π) and molarity (M) is
A. π = M/R
B. π = RT/M
C. π = M/RT
D. π = MRT
15. Which colligative property is used to determine molar mass of a solute in macromolecules?
A. Boiling point elevation
B. Osmotic pressure
C. Freezing point depression
D. Vapor pressure lowering
16. Osmotic pressure is given by the equation
A. π = CRT
B. π = C/R
C. π = R/CT
D. π = RT/C
17. The addition of a solute to a solvent results in
A. Increase in freezing point
B. Decrease in freezing point
C. Increase in boiling point
D. No change in freezing point
18. Osmotic pressure is directly proportional to
A. Temperature
B. Volume
C. Pressure
D. Density
19. Which solution is isotonic with a 0.1 M glucose solution?
A. 0.05 M NaCl
B. 0.1 M sucrose
C. 0.2 M glucose
D. 0.1 M NaCl
20. The relation between freezing point depression and molality is
A. ΔTf = Kf/m
B. ΔTf = Kf × m
C. ΔTf = 1/Kf × m
D. ΔTf = m/Kf
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