Question

The gold number range of some of the lyophilic colloids is given below: 
A: 0.005 - 0.01,  B: 0.15 - 0.25,  C: 0.04 - 1.0,  D: 15 - 25.

• A. A
• B. B
• C. C
• D. D

Hint:

Lyophilic colloids with lower gold numbers have greater protective power and are more effective in stabilizing the dispersed phase.

Answer 1

The Correct Option is D

The gold number is a measure of the protective power of colloids. The lower the gold number, the more effective the colloid is in preventing the coagulation of gold.
- A lower gold number indicates better protection (A has the best protective power).
- Higher values of gold number are observed for less protective colloids (D has the lowest protective power).