Pick out the wrong statement (s).
(i) Vapour pressure of a liquid is the measure of the strength of intermolecular attractive forces .
(ii) Surface tension of a liquid acts perpendicular to the surface of the liquid .
(iii) Vapour pressure of all liquids is same at their freezing points .
(iv) Liquids with stronger intermolecular attractive forces are more viscous than those with weaker intermolecular force .

Options

A. 2, 3 and 4
B. 2 and 3
C. 1, 2 and 3
D. 3 only

Answer

D

Explanation

(1) Vapour pressure will be more if the inter molecular attractive forces are weak.
(2) The direction of surface tension in a liquid is perpendicular to the surface of the liquid.
(3) At freezing point, vapour pressure of solid phase is equal to that of liquid phase. So it depends on the liquid.
(4) True.