Q19 of 62 Page 17

Consider the Fig. 2.1 and mark the correct option.


In reverse osmosis, solvent molecules move through a semi-permeable membrane from a region of higher solute concentration to a lower solute concentration under the application of hydrostatic pressure, vice versa is true for osmosis.


Thus if the pressure applied to piston B, is greater than osmotic pressure reverse osmosis will take place.


Thus, Option (ii) is correct.

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17

Value of Henry’s constant KH ____________.

 18

The value of Henry’s constant KH is _____________.

 20

We have three aqueous solutions of NaCl labelled as ‘A’, ‘B’ and ‘C’ with concentrations 0.1M, 0.01M and 0.001M, respectively. The value of van’t Hoff factor for these solutions will be in the order______.

 21

On the basis of information given below mark the correct option.

Information:


(A) In bromoethane and chloroethane mixture intermolecular interactions of A–A and B–B type are nearly same as A–B type interactions.


(B) In ethanol and acetone mixture A–A or B–B type intermolecular interactions are stronger than A–B type interactions.


(C) In chloroform and acetone mixture A–A or B–B type intermolecular interactions are weaker than A–B type interactions.