Which of the following statements is false?
(a) Units of atmospheric pressure and osmotic pressure are the same
(b) In reverse osmosis, solvent olecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration.
(c) The value of molal depresiion constant depends on nature of solvent
(d) Relative lowering of vapour pressure, is a dimensionless quantity

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Solution

(b) In reverse osmosis, solvent olecules move through a semipermeable membrane from a region of higher concentration of solute to lower concentration.

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Q. Question 6
Following are a few definitions of osmosis. Read carefully and select the correct definition:

(a) Movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane
(b) Movement of solvent molecules from its higher concentration to lower concentration
(c) Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane
(d) Movement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membrane

Osmosis is the flow of solvent into solution of higher concentration from solution of lower concentration through semi-permeable membrane. Which of the following is incorrect?

a. Osmotic pressure is the external pressure required to be applied so that there is no net movement of solvent across the membrane.

b. Reverse Osmosis is a process where you demineralize or deionize water by pushing it under pressure through a semi-permeable Reverse Osmosis Membrane.

c. In Osmosis when equilibrium is reached, then water stops flowing across the membrane

d. None of these

Q. The movement of solvent molecules from higher concentration to lower concentration through semipermeable membrane under pressure is termed:

Osmosis is the movement of _________ molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane.

Q. Relative lowering of vapour pressure, osmotic pressure of a solution and elevation in boiling points are _______ (p) properties. Osmosis is the passage of _______ (q) through a semipermeable membrane from a solution of _______ (r) towards a solution of ______ (s). Osmotic pressure is equivalent to mechanical pressure which must be applied on _______ (t) to prevent osmosis.
In the above paragraph p,q,r,s and t respectively are

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