Which of the following colloids is $NOT$ a gel?

An example of a water-in-oil $(W/O)$ type emulsion is ......

How is the dispersion medium in Aerosol?

The flocculation value of $HCl$ for arsenic sulphide sol is $30 \; mmol \; L^{-1}$. If $H_{2}SO_{4}$ is used for the flocculation of arsenic sulphide,the amount,in grams,of $H_{2}SO_{4}$ in $250 \; mL$ required for the above purpose is (molecular mass of $H_{2}SO_{4} = 98 \; g/mol$)

For a positive sol, which of the following has the maximum coagulation power?

The coagulation power of an electrolyte for arsenious sulphide sol decreases in the order: