Mcqs bhc and malathion are option pesticides insecticides fungicides weedicides
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- done Chemical Pesticide. Question Bank. question_answer1) Houseflies and mosquitoes have become resistant to the. A) BHC ...
BHC & Malathion are insecticides.
Malathion - Malathion is actually an organophosphate insecticide which acts as an acetylcholinesterase inhibitor. It's chemical formula is C10H19O6PS2 and it's molar mass 330.358 g/mol. This insecticide's density is 1.23 g/cm³ and it's solubility in water is 145 mg/l. It's melting point is 2.9 degree Centigrade & boiling point is 156-157 degree Centigrade.
BHC - The full name of BHC is Benzene Hexachloride. It's chemical formula is C6H6Cl6. It is formed by the light-induced addition of chlorine to benzene. One of these isomers is an insecticide called lindane, or Gammexane.Benzene hexachloride was first prepared in 1825; the insecticidal properties were identified in 1944 with the γ-isomer (gamma-isomer), which is about 1,000 times more toxic than any of the other diastereomers formed in the reaction. The structural differences between these individuals are in the orientations of the chlorine atoms with respect to the ring of carbon atoms.