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Solutions · Question 50

AIPMT 2002MCQEasy📈 Topic in 38% papers+4−1
1

A solution containing components A and B follows Raoult's law when

  1. A-B attraction force is greater than A-A and B-B
  2. A-B attraction force is less than A-A and B-B
  3. A-B attraction force remains same as A-A and B-B
  4. volume of solution is different from sum of volumes of solute and solvent

Answer

(3) A-B attraction force remains same as A-A and B-B

Solution

A solution that obeys Raoult's law over the entire range of concentration is an ideal solution.

As per NCERT, in an ideal solution the solute–solute (A-A) and solvent–solvent (B-B) interactions are nearly equal to the solute–solvent (A-B) interactions.

Also mixH = 0 and mixV = 0, so the volume of the solution equals the sum of the volumes of the components.

Answer: (3)

AIPMT 2002

Keep practising — Solutions

2

A solution contains non-volatile solute of molecular mass M2. Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure?

  1. M2 = ( m2 )VRT
  2. M2 = ( m2V ) RT
  3. M2 = ( m2V ) RT
  4. M2 = ( m2V ) RT
AIPMT 2002
3

Pure water can be obtained from sea water by

  1. centrifugation
  2. plasmolysis
  3. reverse osmosis
  4. sedimentation
AIPMT 2001
4

From the colligative properties of solution, which one is the best method for the determination of molecular weight of proteins and polymers?

  1. Osmotic pressure
  2. Lowering in vapour pressure
  3. Lowering in freezing point
  4. Elevation in boiling point
AIPMT 2000

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