The insecticides with longest residual effect belongs to___________________?
Correct answer: C. Organo-chlorine
- A. Pyrethroid
- B. Carbamates
- C. Organo-chlorine
- D. Organio-phosphate
Explanation
Organochlorines generally persist longest because they are chemically stable and degrade slowly in the environment. Pyrethroids, carbamates and organophosphates usually have shorter residual activity.
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