| 1 |
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
|
| 2 |
In azeotropic mixture showing positive deviation from Raoult's law, the volume of the mixture is. |
- A. slightly more than the total volume of the components
- B. Slightly less than the total volume of the component
- C. Equal to the total volume of the components
- D. None of these
|
| 3 |
When an ionic compound is dissolved in water, it dissociate into positive and negative ions, which are surrounded by H2O molecule, This process is known as. |
- A. Hydrolysis
- B. Hydration
- C. Saturation
- D. solvolysis
|
| 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
|
| 5 |
Which of the following solution s has the highest boiling point. |
- A. 5.85% solution of sodium chloride
- B. 18.0 % solution of glucose
- C. 6.0% solution of urea
- D. All have the same boiling point
|
| 6 |
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
|
| 7 |
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
|
| 8 |
18 g glucose is dissolved in 90 g o water, The relative lowering of vapour pressure is equal to. |
- A. 1/5
- B. 5.1
- C. 1/51
- D. 6
|
| 9 |
Unit of mole fraction is |
- A. mol dm-3
- B. mol kg-1
- C. g dm-3
- D. No unit
|
| 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
|