Why are cimetidine and ranitidine better antacids than sodium hydrogencarbonate or magnesium or aluminium hydroxide?
Explain the following terms with suitable examples:
(i) cationic detergents,
(ii) anionic detergents and
(iii) neutral detergents.
What are biodegradable and non-biodegradable detergents? Give one example of each.
Biodegradable detergents are detergents with straight hydrocarbon chain. These detergents can be destroyed by bacteria.For example Sodium alkyl benzene sulphonate.
Non-biodegradable detergents are detergents with branched hydrocarbon chain. These detergents cannot be destroyed by bacteria. Non-biodegradable detergents are the source of pollutions. For examples: Cetyl methyl ammonium bromide.