Question
(i) What class of drug is Ranitidine?
(ii) If water contains dissolved Ca2+ ions, out of soaps and synthetic detergents, which will you use for cleaning clothes?
(iii) Which of the following is an antiseptic?
0.2% phenol, 1% phenol
Solution
(i) Ranitidine belongs to Antihistamines class of drugs.
(ii) If water contains Ca2+ ions then out of soaps and synthetic detergents, we will use synthetic detergents. In case of soaps, Ca2+ ions form insoluble calcium soaps when sodium or potassium soaps are dissolved in hard water.
2C17H35COONa + CaCl2 ---> 2NaCl + (C17H35COO)2Ca
Soap insoluble calcium sterate soap
Whereas the synthetic detergents can be used in both soft and hard water.
(iii) 0.2% phenol is an antiseptic.
