The difference between colloids and crystalloids is based on

Which of the following will show Tyndall effect?

Which mixture of the solutions will lead to the formation of a negatively charged colloidal $[AgI]I^{-}$ sol?

Fog is a colloidal solution of

Albumin has a gold number of $0.09$. What is the minimum amount of albumin (in $mg$) required to protect the coagulation of $40 \ mL$ of gold sol from $4 \ mL$ of $10 \% \ NaCl$ solution?

Which of the following statements are not true?