Question

Match the classes of drugs given in Column I with their action given in Column II.

Column I	Column II
(i) Analgesics	(a) Inhibit the growth of microorganisms can be given orally
(ii) Antiseptics	(b) Treatment of stress
(iii) Antihistamines	(c) Applied to inanimate objects
(iv) Antacids	(d) Prevents the interaction of histamine with its receptor
(v) Tranquilisers	(e) Pain killing effect
(vi) Antibiotics	(f) Applied to diseased skin surfaces
(vii) Disinfectants	(g) Treatment of acidity

Answer 1

Column I	Column II
(i) Analgesics	(e) Pain killing effect
(ii) Antiseptics	(f) Applied to diseased skin surfaces
(iii) Antihistamines	(d) Prevents the interaction of histamine with its receptor
(iv) Antacids	(g) Treatment of acidity
(v) Tranquilisers	(b) Treatment of stress
(vi) Antibiotics	(a) Inhibit the growth of microorganisms can be given orally
(vii) Disinfectants	(c) Applied to inanimate objects

Explanation:

(i) Analgesics reduce or abolish pain without causing impairment of consciousness, mental confusion, in coordination or paralysis or some other disturbances of nervous system, e.g., aspirin.

(ii) Antiseptics are the chemicals that either kill or prevent the growth of microorganisms. They are applied to living tissues such as wounds, cuts etc. e.g., tincture of iodine.

(iii) Antihistamines are anti-allergic drugs. These drugs interfere with the natural action of histamine by competing with histamine for binding sites of receptor where histamine exerts its effect, e.g., seldane.

(iv) Antacids are used to neutralize excess of acid released in stomach e.g., mixture of \[\ce{Mg(OFl)2}\] and \[\ce{Al(OH)3}\].

(v) Tranquilizers are used for the treatment of stress, and mid or even severe mental diseases e.g., equanil.

(vi) Antibiotics are antimicrobial drugs. Antibiotics are used as drugs to treat infections because of their low toxicity for humans and animals e.g., chloramphenicol.

(vii) Disinfectants are the chemicals that either kill or prevent the growth of microorganisms but they can be applied on non-living objects e.g., 1 per cent solution of phenol.