A) very costly
B) not available
C) inflammable
D) not degraded easily
Correct Answer: D
Solution :
DDT (Dichlorodiphenyltrichloroethane) either does not degrade or degrade extremely slowly in the natural environment. DDT is still detected after 24 years. It?s half-life period is up to 10 years. So the use of DDT is banned now-a-days.
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