Question:
Which of the following is not a synthetic pyrethroid compound?
Which of the following is not a synthetic pyrethroid compound?
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Three names share the pyrethroid suffix, one is a classic organochlorine.
Updated On: Jun 24, 2026
- DDT
- Permethrin
- Proparthrin
- Cypermethrin
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The Correct Option is A
Solution and Explanation
Step 1: The question asks which agent is NOT a synthetic pyrethroid. Pyrethroids are synthetic analogues of pyrethrins, the natural insecticides found in chrysanthemum flowers.
Step 2: Permethrin, prallethrin (proparthrin) and cypermethrin all end in the typical pyrethroid suffix and are man-made pyrethroids used in household sprays, coils and mosquito repellents. So options B, C and D are all true pyrethroids.
Step 3: DDT (dichlorodiphenyltrichloroethane) is an organochlorine insecticide, a completely different chemical class. It works by keeping sodium channels open and is highly fat soluble, so it persists in the environment and the body.
Step 4: Because DDT belongs to the organochlorine group and not to the pyrethroid group, it is the odd one out.
Answer: A. DDT.
Step 2: Permethrin, prallethrin (proparthrin) and cypermethrin all end in the typical pyrethroid suffix and are man-made pyrethroids used in household sprays, coils and mosquito repellents. So options B, C and D are all true pyrethroids.
Step 3: DDT (dichlorodiphenyltrichloroethane) is an organochlorine insecticide, a completely different chemical class. It works by keeping sodium channels open and is highly fat soluble, so it persists in the environment and the body.
Step 4: Because DDT belongs to the organochlorine group and not to the pyrethroid group, it is the odd one out.
Answer: A. DDT.
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