Which one of the following statements is/are correct? (a) Aldrin an...

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Which one of the following statements is/are correct?
(a) Aldrin and dieldrin were introduced in the market by pesticide industry.
(b) Sodium chlorate \( \left(\mathrm{NaClO}_{3}\right) \) is used as herbicides.
(c) DDT and BH.C are not good insecticides because they are absorbed by the soil and contaminate root crops.
(d) All give statements are correct.
\( \mathrm{P} \)
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