(i) What are disinfectants ? Give an example. (3 marks)
(ii) Give two examples of macromolecules that are chosen as drug targets.
(iii) What are anionic detergents ? Give an example.
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(i) Disinfectants : Disinfectants are chemical compounds which kill microorganisms but are not
safe when applied on living organisms.
Example : Phenol, chlorine.
(ii) Macromolecules used as drug targets are carbohydrates, proteins, nucleic acid and lipids.
(iii) Anionic detergents : Those detergents in which large part of their molecules are anions and
used in cleansing action, are called anionic detergents.
Example : Sodium alkyl sulphates
These are obtained from long straight chain alcohols containing 12-18 carbon atoms by
treatment with conc. followed by neutralization with NaOH.
Example : Sodium lauryl sulphate.