| 1 |
In case of non volatile solute, lowering of vapour pressure is proportional to. |
- A. Mass fraction of solute
- B. Mole fraction of solvent
- C. Mole fraction of solute
- D. None of the above
|
| 2 |
Which solution is an example of solid in gas |
- A. Fog
- B. Steel
- C. smoke
- D. Air
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| 3 |
An aqueous solution of ethanol is water has vaporu pressure. |
- A. Equal to the of water
- B. Equal to that of ethanol
- C. More than that of H2O
- D. Less than that of water
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| 4 |
Which of the following mixtures of liquids show negative deviation |
- A. Methyl alcohol water
- B. Hydrochloric acid water
- C. Carbon di sulphide chloroform
- D. Chlorobenzene bromobenzene
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| 5 |
Colligative properties are used to determine the |
- A. Freezing points
- B. Boiling point
- C. Atomic mass of an element
- D. Molar mass of solute
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| 6 |
<div>Relative lowering of vapour pressure is equal to.</div> |
- A. Mole fraction of solute
- B. Mole fraction of solvent
- C. Mole fraction of solute and solvent
- D. Molality of solution
|
| 7 |
Azeotrpic mixture of two liquids boils at a lower temperature than either of them, when |
- A. It is saturated
- B. Is shows positive deviation from Raoult's law
- C. It shows negative deviation from Raoult's law
- D. Is is metastable
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| 8 |
Solubility curve of CaCl26H2O shows |
- A. Decrease in solubility with increase of temperature
- B. Increase in solubility with increase of temperature
- C. Discontinuous increase in solubility with temperature
- D. No effect of temperature on solubility
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| 9 |
A negative deviation from Raoult's law in solution means, the solution has |
- A. High boiling point and high vapour pressure
- B. High boiling point and low vapour pressure
- C. Low boiling point and low vapour pressure
- D. Low boiling point and high vapour pressure
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| 10 |
Depression of freezing point method is used for determination of molar masses of |
- A. Electrolytes
- B. Non-volatile solids
- C. Volatile solids
- D. Volatile liquids
|