| 1 |
18 g of glucose is dissolved in 90 g of water. The relative lowering of vapour pressure is equal to |
- A. 1/5
- B. 5.1
- C. 1/51
- D. 6
|
| 2 |
Which one of the following salts dissolved in water to form a solution with a pH greater than 7 |
- A. NaCl
- B. CuSO4
- C. Na2CO3
- D. NH4Cl
|
| 3 |
Molal boiling constant for water is 0.52 <sup>o</sup>C. If 6 g of urea is dissolved in 100 g of water, what will be its boiling point. |
- A. 100.52 <sup>o</sup>C
- B. -100.52<sup>o</sup>C
- C. 100<sup>o</sup>C
- D. 99<sup>o</sup>C
|
| 4 |
Which of the following solutions will have the highest boiling point |
- A. 0.1 M NaCI
- B. 0.1 M CaCI<sub>2</sub>
- C. 0.1 M FeCI<sub>3</sub>
- D. 0.1 M glucose
|
| 5 |
Two solution of NaCI and KCI are prepared separately by dissolving same moles of them in the fixed amount of solvent. Which of the following statements is true for these solution |
- A. KCI solution will have higher boiling point than NaCI solution
- B. Both the solutions have different boiling point
- C. KCI and NaCI solution possess same vapour pressure
- D. KCI solution possesses lower freezing point than NaCI solution
|
| 6 |
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
|
| 7 |
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
|
| 8 |
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
|
| 9 |
Solubility of which substance decreases by increasing temperature. |
- A. NaNO3
- B. KNO2
- C. NaCl
- D. Ce2(SO4)3
|
| 10 |
The molal boiling point constant is the ration of the elevation in boiling point to |
- A. Molarity
- B. Molality
- C. Mole fraction of solvent
- D. Mole fraction of solute
|
