Which of the following is not a Synthetic Pyrethyroid Compound?: (A) DDT, (B) Permethrin, (C) Propahrin, (D) Cypermethrin
Answer is A. DDT is not a synthetic Pyrethroid compound while the other three (Propahrin, Cypermethrin and Permthrin) are synthetic pyrethroid compounds Ref: Goldfrank's Toxicological Emergencies, 8th Edition, Page 1529; Park's Textbook of Preventive and Social Medicine, 19th Edition, Pages 637-639.