DDT is a: March 2013 (a, h)
Correct Answer: Contact poison
Description: Ans. A i.e. Contact poison DDT/ dichlorodiphenyltrichloroethane It is an organochlorine insecticide which is a colorless, crystalline solid, tasteless and almost odorless chemical compound. The Swiss chemist Paul Hermann Muller was awarded the Nobel Prize in Physiology or Medicine in 1948 "for his discovery of the high efficiency of DDT as a contact poison against several ahropods."
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