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Class 12 Chemistry Practice Test: Vapour Pressure of Liquid Solutions
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Avg score: 65% • Most missed: “If a mixture of A and B boils at a temperature lower than the boiling point of e…”
Class 12 Chemistry Practice Test: Vapour Pressure of Liquid Solutions
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10 Questions

1. If a mixture of A and B boils at a temperature lower than the boiling point of either of the components, what kind of deviation does the mixture show?
2. Which of the following is caused by the addition of a non-volatile solute to a solvent?
3. A volatile liquid with vapor pressure 85 kPa (at sea level, 25° C) is taken to the peak of Mt. Everest. Which of the following is true?
4. What is the boiling point of water?
5. What phenomenon occurs when a solution’s equilibrium vapor pressure equals the surrounding atmospheric pressure?
6. If ethanol and chloroform are present in a molar ratio of 2:3 then what is the vapor pressure at 20° C if vapor pressures of pure liquids are 5.95 kPa and 21.17 kPa, respectively?
7. “Total pressure of gas mixture is the sum of individual pressures”. Which law is reflected in this statement?
8. What does the vapor pressure of solvent containing a non-volatile solute, in a closed system directly vary with?
9. What deviation is shown by a mixture of equimolar phenol and aniline?
10. Considering a binary solution of components A and B obeys Raoult’s law, which of the following is true?

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