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Surface Chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySurface Chemistry5 Marks
Question
Method of formation of solution is given in Column I. Match it with the type of solution given in Column II.
  Column I   Column II
(i) Sulphur vapours passed through cold water. (a) Normal electrolyte solution.
(ii) Soap mixed with water above critical micelle concentration. (b) Molecular colloids.
(iii) White of egg whipped with water. (c) Associated colloid.
(iv) Soap mixed with water below critical micelle concentration. (d) Macro molecular colloids.
✓

Answer

  Column I   Column II
(i) Sulphur vapours passed through cold water. (b) Molecular colloids.
(ii) Soap mixed with water above critical micelle concentration. (c) Associated colloid.
(iii) White of egg whipped with water. (d) Macro molecular colloids.
(iv) Soap mixed with water below critical micelle concentration. (a) Normal electrolyte solution.
Explanation:
  1. By passing vapours of Sulphur through cold water sulphur sol can be prepared which is a molecular colloid.
  2. When soap is mixed with water above critical micelle concentration forms associated colloid.
  3. White of egg whipped with water forms macromolecular colloid.
  4. Soap mixed with water below critical micelle concentration behave as normal electrolyte.

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