Multiple choice

Which of the following statements are TRUE?

  1. The protecting power of lyophilic colloidal sol is expressed in terms of gold number.
  2. Rate of physical adsorption increase with decrease in temperature.
  3. In Freundlich Adsorption isotherm, the value of 1/n is 0 in case of physical adsorption and 1 in case of chemisorptions.
  4. In Langmuir's model of adsorption of a gas on a solid surface the mass of gas striking a given area of surface is independent of the pressure of the gas. Select the correct answer.

  1. only 1 and 2

  2. 1, 2 and 3

  3. 1 and 4

  4. 2 and 3

  5. 3 and 4

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Only statement 1 and 2 are true statements. The protecting power of lyophilic colloidal sol is expressed in terms of gold number. Rate of physical adsorption increase with decrease in temperature.

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