The group of chemicals used as pesticide is
(1) Sodium chlorate, DDT, PAN
(2) DDT, Aldrin
(3) Aldrin, Sodium chlorate, Sodium arsinite
(4) Dieldrin, Sodium arsinite, Tetrachlorothene

Answer: 2
Explanation: DDT (Dichlorodiphenyltrichloroethane) and Aldrin are both examples of chemicals used as pesticides.
DDT was commonly used as an insecticide in the past but has been banned or restricted in many countries due to its harmful effects on the environment and wildlife. Aldrin is another organochlorine insecticide that has also been banned or restricted in several countries due to its persistence and toxicity.

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