The coagulation of $10 \, mL$ of gold sol is prevented by the addition of $0.025 \, g$ of starch to it before adding $1 \, mL$ of $10 \% \, NaCl$ solution. The gold number of starch is .............

What happens when an electric field is applied to a colloidal solution?

How many of the following statements are correct $:$
$(i)$ When freshly prepared precipitate are converted into colloidal solution then process is called peptization.
$(ii)$ Lyophilic sol are mostly of inorganic nature.
$(iii)$ Lyophilic sol are highly solvated as particles have great affinity for solvent.
$(iv)$ Lyophobic sols are reversible sols so special methods are required to prepare them.

Gelatin,which is a peptide,is added to ice creams. What is its role?

For coagulating $As_2S_3$ colloidal sol,which of the following will have the lowest coagulation value?

Hair cream is an example of which of the following?