Identify the negatively charged sol from the following.

Which characteristic is true in respect of colloidal particles?

Which of the following is not correct?

Critical Micelle Concentration $(CMC)$ for a soap solution is $1.5 \times 10^{-4} \ mol \ L^{-1}$. Micelle formation is possible only when the concentration of soap solution in $mol \ L^{-1}$ is:

The minimum concentration of an electrolyte in $mol \ L^{-1}$ required to cause coagulation or precipitation of a sol is known as:

High concentration of gelatin in water on heating gives a colloidal solution,which is called