What are the following substances ? Give one example of each type. (3 marks)
(i) Antacid (ii) Non-ionic detergents (iii) Antiseptics
(i) Antacid :Those substances which neutralize the excess acid and raise the pH to an appropriate
level in stomach are called antacids.
Example : Sodium bicarbonate,
(ii) Non-ionic detergents : These are esters of high molecular mass alcohols obtained by reaction
between polyethylene glycol and steric acid.
(iii) Antiseptics : These are chemical substances which prevent the growth of micro-organisms
and may even kill them and safe to be applied on living tissues.
Example : Furacin, soframycin etc.