| 1 |
Azeotropic mixture |
- A. Obey Raoult's law
- B. Do not obey Raoult's law
- C. Boils at low temperature only
- D. Boils at high temperature only
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| 2 |
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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| 3 |
Colligative properites are the properties of |
- A. Dilute solutions which behave as nearly ideal solution
- B. Concentrated solution which behave as nearly non-ideal solution
- C. Both a and b
- D. Neither a nor b
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| 4 |
What amount of NaOH is required to prepare 500 g of 0.5 molal solution. |
- A. 10 g
- B. 20 g
- C. 30 g
- D. 40 g
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| 5 |
Heat of solution of an ionic compound is equal to. |
- A. Hydration energy
- B. Lattice energy
- C. Slum of both 'a' and 'b'
- D. Difference of both a and b
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| 6 |
The relative lowering of vapour pressure is equal to the mole fraction of the solute. This law is known as |
- A. Ostwald dilution law
- B. Raoult's law
- C. Vant hoff's law
- D. Henry's law
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| 7 |
Which concentration unit is independent of temperature. |
- A. Molarity
- B. Molality
- C. ppm
- D. both a and b
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| 8 |
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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| 9 |
The molar boiling point constant is the ratio of the elevation of boiling point to . |
- A. Molarity
- B. Molality
- C. Mole fraction of solvent
- D. Mole fraction of solute
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| 10 |
10 g of NaOH have been dissolved per kg of solvent The molality of solution. |
- A. 0.25 m
- B. 0.5 m
- C. 1.0 m
- D. 2.0 m
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