Test: Osmosis & Osmotic Pressure - NEET MCQ

The correct answer is Option A.
Π = (W / M * V) * R * T
Π = (3.42 / 345 * 1 L) * 300 K * 0.0821
    = 0.02463 atm
 

The correct answer is option D
Osmotic pressure is calculated as:
π = CRT
where, π = Osmotic pressure
C = Concentration
R = Gas constant
T = Temperature.
It is evident from the equation that osmotic pressure is directly proportional to the temperature.
 

The correct answer is Option B.
Measurement of osmotic pressure provides a method to determine molar masses of solutes. This method is widely used to determine molar masses of proteins, polymers and other macromolecules.
 

The correct answer is option A
The mixture will have the same osmotic pressure as the two individual values.
π_urea​=0.1×ST
π_glucose​=0.1×ST
π_mix​=(0.1ST+0.1ST) / 2​               
      =0.1ST

The correct answer is option D
 
The process of movement of solvent through a semipermeable membrane from the solution to the pure solvent by applying excess pressure on the solution side is called reverse osmosis.

The correct answer is Option C
Reverse osmosis also involves diffusion, making the process dependent on pressure, flow rate, and other conditions. Reverse osmosis is most commonly known for its use in drinking water purification from seawater, removing the salt and other effluent materials from the water molecules.

The correct answer is Option B
Osmosis can be defined as the spontaneous movement of solvent molecules through a semipermeable membrane from a lower-concentration solution to a higher-concentration solution.

The correct answer is option C
Osmotic pressure () = CRT =( W₂ x R x T) / (M₂ x V)
∴M₂ = ( W₂ x R x T) / ( x V)
       = (2g x 0.082Latm/mol^k x 300k) /(0.1atm x 0.1L)
       = 4920 g/mol 
       = 4.920 kg/ mol