Which of the following are anionic detergents?
I. Sodium salts of sulphonated long chain alcohol.
II. Ester of stearic acid and polyethylene glycol.
III. Quaternary ammonium salt of amine with acetate ion.
IV. Sodium salts of sulphurated long chain hydrocarbons.
The correct option is
Sodium salts of sulphonated long chain alcohol and hydrocarbons are anionic detergents.