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JEE Main levelSingle correct optionDifficulty 2 of 3ev183

Aldrin, once applied to soil, is slowly converted by oxidation (epoxidation) into

  1. ADDT, which is less persistent
  2. Bcarbaryl, a biodegradable carbamate
  3. C2,4-D, a herbicide
  4. Ddieldrin, which is also a persistent organochlorine insecticide

Answer: D

Aldrin is epoxidised in soil and in organisms to dieldrin, itself a persistent organochlorine. So the hazard continues after aldrin itself disappears.
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