Question

Which of the following is a positively charged sol?

• A. Methylene blue sol
• B. $A{s}_2{S}_3$
• C. $S{b}_2{S}_3$
• D. Gold sol

Answer 1

Answer: (A)

Negatively charged sols : $A{s}_2{S}_3,S{b}_2{S}_3$ and gold sol while methylene blue sol is positively charged sol.