Question

Consider the given figure and mark the correct option.

• A. water will move from side (A) to side (B) if a pressure lower than osmotic pressure is applied on piston (B).
  
• B. water will move from side (A) to side (B) if pressure equal to osmotic pressure is applied on piston (A).
  
• C. water will move from side (B) to side (A) if a pressure greater than osmotic pressure is applied on piston (B).
  
• D. water will move from side (B) to side (A) if a pressure equal to osmotic pressure is applied on piston (B).
  

Answer 1

The correct option is C water will move from side (B) to side (A) if a pressure greater than osmotic pressure is applied on piston (B).


In reverse osmosis, solvent molecules move through a semi-permeable membrane from a region of higher solute concentration to a lower solute concentration.

So, water will move from side (B) to side (A) if a pressure greater than the osmotic pressure is applied on piston (B) due to reverse osmosis.

Hence, option (B) is correct.