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Drawback of DDT as pesticide is

1. It becomes ineffective after sometime
2. It is less effective than others
3. It is not easily/rapidly degraded in nature
4. Its high cost

Correct answer: It is not easily/rapidly degraded in nature

Solution

The major drawback of DDT is its persistence in the environment, as it is not easily degraded and accumulates in the food chain, leading to biomagnification.

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