Which of the following solutions is used in the styptic action which prevents bleeding of blood?

What is the range of particle size in the colloidal state?

Consider the following statements for a gold sol:
$(I)$ It is a macromolecular colloid.
$(II)$ It is a lyophobic sol.
$(III)$ It is a negatively charged sol.
$(IV)$ It is a multimolecular colloid.
$(V)$ It is an associated colloid.
The correct statements are:

$A$ system of cellulose dispersed in alcohol is known as a ...... .

Which of the following statements is true for a lyophobic sol?

Fog is an example of a colloidal system.