 Physical PharmacyÂ
???????? Colligative Property ????????
1). Which one of the following is not a colligative property?
A) Osmotic pressure
B) Elevation of boiling point
C) Surface tension
D) Depression in freezing point
2). Which of the following factor influence the Vapor pressure
A) Surface area
B) Intermolecular force
C) Temperature
D) All of the above
3). The unit of cryoscopic constant is
A) Kelvin Kg/mol
B) Kelvin kg mol
C) Kelvin /kg/mol
D) Kelvin g/mol
4). The value of Ebulioscopic constant depend on
A) Amount of solute
B) Amount of solvent
C) Nature of solute
D) Nature of Solvent
5). The ratio of elevation in boiling point to molarity of solution is known as
A) molar elevation constant
B) mole elevation constant
C) Normal elevation constant
D) Molal elevation constant
6). Molecular weight of non volatile soluble solute can be determined by
A) elevation of boiling point
B) depression of freezing point
C) lowering of vapour pressure
D) osmotic pressure
7). When sugar is added to water, what is the change observed in boiling & freezing point of water?
A) both boiling and freezing point decrease
B) both boiling and freezing point increase
C) boiling point increase and freezing point decrease
D) boiling point decrease and freezing point Increase
8). The elevation in boiling point is given by the formula ∆T= Kb × w/m × 1/w where, Kb is called
A) boiling point constant
B) Ebulioscopic constant
C) molal elevation constant
D All of these
9). When a non volatile solute is added to a solvent, the freezing point of the solvent
A) remain the same
B) increase
C) decrease
D) none of these
???? Freezing point depression is measured by
A) Beckmann’s method
B) Rast’s camphor method
C) Both A and B
D) None of these
Answers
1. C (surface tension)
2. D (all of the above)
3. A (kelvin kg/mol)
4. D (nature of solvent)
5. D (molal elevation constant)
6. A (elevation of Boiling point)
7. C (boiling point increase and freezing point decrease)
8. D (all of these)
9. C (decrease)
10. C (Both A&B)
