(i) Name a substance which can be used as an antiseptic as well as disinfectant.
(ii) name an artificial sweetener whose use in limited to cold foods and drinks.
(iii) What are contionic detergents ?

Explanation

(i) `0.2%` solution of phenol acts as antiseptic whereas `1%` solution acts as an disinfectant.
(ii) Aspartame is artificial sweetner whose use is limited to cold food and drinks.
(iii) Cationic detergents : Those detergents in which major part of their moleculaes are cations and cationic part involves in their cleansing action. Ex. Quaternary ammonium salts of chloride, bromides, acetates etc.
`[{:(" "CH_(3)),(" "+),(" "|),(CH_(3)(CH_(2))_(15)-N-CH_(3)),(" "|),(" "CH_(3)):}]Br^(-)`
Cetyl trimethyl ammonium bromide