Chloramphenicol is an

(a) Antifertility drugs are used to control pregnancy. These drugs prevent conception or fertilization e.g., Mifepristone, narethindrone, mestranol etc. (b) Antihistamines are used for the relief of allergies. e.g., diphenlhydramine, chlorpheniramine, promethazine etc. (c) Antiseptic are the used to reduce the number and growth of microorganism. e.g., dettol soap etc, whereas disinfectants kill bacteria and are used for sterilization of inanimate objects like instruments, utensils, cloths, floors etc. e.g., phenol, $\mathrm{H}_2 \mathrm{O}_2, \mathrm{SO}_2$, dettol, iodol etc. (d) Broad spectrum antibiotics are such antibiotics that acts against a wide range of disease causing bacteria. They act against both Gram-positive and Gram-negative bacteria. e.g., ampicillin chloramphenicol etc.