NEET Chemistry Chemistry in Everyday Life Questions Solved

BOARD

Explain the following terms with an example for each :                (3 marks)

(i) Antibiotics                              (ii) Antiseptics                     (iii) Analgesics

 (i) Antibiotics : Those chemical substances which are produced completely or partially by

     chemical synthesis in low concentration and either kill or inhibit the growth of microorganisms

     by intervening in their metabolic processes, are known as antibiotics.

     Examples :

     Tetracycline  Bacteriostatic antibiotics,

     Penicillin  Bactericidal antibiotics

 

 (ii) 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.

 

(iii) Analgesics : These drugs are the chemical substances which are given to relieve body

      pains. These act on the central nervous system.

      These are classified as Narcotics i.e. habit forming and non-narcotics i.e. not habit forming.

      Examples of Narcotics : Opium which contains alkaloids such as Codeine and Morphine.

      Examples of Non-Narcotics : Aspirin and Ibuprofen.

Difficulty Level:

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