<prompt> Which of the following is a polychlorinated hydrocarbon?ParathionMalathionDiazinonDieldrinEndrin  <response>: Organochlorine insecticides are chlorinated hydrocarbons and are divided into four types as: DDT dichlorodiphenyl-trichloroethane and analogues Benzene hexachloride group -- e.g. BHC, lindane Cyclodines and related compounds -- e.g. endrin, aldrin,dieldrin, endosulfan, sobenzan polycyclic polychlorinated hydrocarbon Toxaphene and related compounds -- e.g. toxaphen Ref: K.S.Narayan Reddys Synopsis of Forensic Medicine and Toxicology, 29th edition, Chapter 24, page-286. 