Question

19. Consider the figure and mark the correct option.
Piston (A) Piston (B)
(a) Water will move from side (A) to side (B) if a pressure
SPM
lower than osmotic pressure is applied on piston (B).
(b) Water will move from side (B) to side (A) if a pressure
Concentrated
sodium chloride
Fresh water
greater than osmotic pressure is applied on piston (B).
solution in
(c) Water will move from side (B) to side (A) if a pressure
water (B)
equal to osmotic pressure is applied on piston (B).
(d) Water will move from side (A) to side (B) if a pressure equal to osmotic pressure is
applied on piston (A).​

Answer 1

Answer:

19. The correct option is :

( b ). Water will move from side B to side A if a pressure concentrated NaCl, Fresh water is greater than Osmotic pressure ( pi ) is applied on piston B.

Explanation :

When pressure more than osmotic pressure as in case B, is applied, then, pure water / fresh water is squeezed out of the salty water / sea water through the membrane ( SPM - Semi Permeable Membrane).