Q. No.Match the items given in Column I with the type of solutions given in Column II.
Column I
Column II
A. Soda water
1. A solution of gas in solid
B. Sugar solution
2. A solution of gas in liquid
C. German silver
3. A solution of solid in liquid
D. Hydrogen gas in palladium
4. A solution of solid in solid
Codes
A
B
C
D
1.
2
1
4
3
2.
1
2
3
4
3.
2
3
4
1
4.
4
1
3
2
A solution that has the highest boiling point among the following is -
1. 1.0 M NaOH
2. 1.0 M Na2SO4
3. 1.0 M NH4NO3
4. 1.0 M KNO3
The unit of Ebullioscopic constant is:
1. K kg mol-1 or K (molality)-1
2. mol kg K-1 or K-1 (molality)
3. kg mol-1 K-1 or K-1 (molality)-1
4. K mol kg-1 or K (molality)
In comparison to a 0.01 M solution of glucose, the depression in the freezing point of a 0.01 M MgCl2 solution will be -
| 1. | Same | 2. | About twice |
| 3. | About three times | 4. | About six times |
An unripe mango placed in a concentrated salt solution to prepare pickle shrivels because -
1. It gains water due to osmosis.
2. It loses water due to reverse osmosis.
3. It gains water due to reverse osmosis.
4. It loses water due to osmosis.
At a given temperature, osmotic pressure of a concentrated solution of a substance:
| 1. | is higher than that of a dilute solution. |
| 2. | is lower than that of a dilute solution. |
| 3. | is same as that of a dilute solution. |
| 4. | cannot be compared with osmotic pressure of dilute solution. |
The incorrect statement among the following is:
| 1. | Two different solutions of sucrose of the same molality prepared in different solvents will have the same depression in freezing point. |
| 2. | The osmotic pressure of a solution is given by the equation π = CRT (where C is the molarity of the solution) |
| 3. | Decreasing order of osmotic pressure for 0.01 M aqueous solutions of BaCl2 > KCl > CH3COOH > sucrose |
| 4. | The vapour pressure exerted by a volatile component of a solution is directly proportional to its mole fraction in the solution. |
The values of van’t Hoff factors for KCl, NaCl and K2SO4 respectively are .......... .
1. 2, 2 and 2
2. 2, 2 and 3
3. 1, 1 and 2
4. 1, 1 and 1
The incorrect statement among the following is:
| 1. | Units of atmospheric pressure and osmotic pressure are the same. |
| 2. | In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration. |
| 3. | The value of molal depression constant depends on nature of solvent. |
| 4. | Relative lowering of vapour pressure, is a dimensionless quantity. |
The value of Henry's constant KH -
1. Increases with increase in temperature.
2. Decreases with increase in temperature.
3. Remains constant.
4. First increases then decreases.
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