Ncert Exercises & Solutions

The incorrect statement among the following is:

1.	Units of atmospheric pressure and osmotic pressure are the same.
2.	In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration.
3.	The value of molal depression constant depends on nature of solvent.
4.	Relative lowering of vapour pressure, is a dimensionless quantity.

Hint: Solvent movement takes place from a high concentration of solute to a lower concentration of solute

In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of higher concentration of

solute to lower concentration. Hence, option 2 is false.