NEET Chemistry Surface Chemistry Questions Solved


Explain the following phenomenon giving reasons :                                             3mark

(i)  Tyndall effect

(ii)  Brownian movement 

(iii)  Physical adsorption decreases with increase in temperature.

i)The colloidal particles scatter light in all directions in space.                           1mark

ii)The zig-zag movement of particles of the dispersed phase due to unbalanced bombardment of the colloidal particles by the molecules of dispersion medium.                                1mark

iii)As the adsorption is an exothermic process, it decreases with increase in temperature.     1mark

Difficulty Level:

  • 79%
  • 11%
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