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1 . Which of the following is used in "Mosquito Coil" ?
[ A ]    Ephidrine
[ B ]    Pyrethrine right
[ C ]    Zinc sulphide
[ D ]    Rotinon
Answer : Option B
Explanation :
The pyrethrins are a class of organic compounds normal ly derived f rom chrysanthemum cinerariifolium that have potent insecticidal activity by targeting the nervous system of insects.
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