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Which of the following is not a constituent of DDT?(a) Carbon(b) Fluorine(c) Chlorine(d) HydrogenI have been asked this question in class test.My question is taken from Environmental Pollution topic in division Environmental Chemistry of Chemistry – Class 11

Answer»

Right choice is (b) Fluorine

The best I can explain: Fluorine is not a CONSTITUENT of DDT. DDT is dichlorodiphenyltrichloroethane which has a chemical formula of C14H9Cl5. THEREFORE, DDT does not CONTAIN fluorine, which is evident from the chemical formula. It also contains impurities in small quantities, i.e., about 15% of its composition. The major COMPONENT which comprises of 77% of the substance is its PARA isomer.



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