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shaalaa.com | Introduction
Chemicals in medicines : analgesics, tranquilizers, antiseptics, disinfectants, antimicrobials, antifertility drugs, antibiotics, antacids, antihistamines elementary idea of antioxidants 2. Chemicals in food : Preservatives, artificial sweetening agents. 3. Cleansing agents : Soaps and detergents, cleansing action.