AIIMS May 2011 – MCQ 89

Which of the following statements regarding DDT is false?
A. Pyrethrum has synergistic action
B. It is a contact poison
C. Immediately kills the prey
D. Residual effect lasts 18 months

Please contribute to the discussion by posting the answer with references and pointing out any errors in the question!

2 Comments

dr kishore May 9, 2011

as DDT causes paralysis of wings so it cann’t kill the pray immediately
venkatesh May 11, 2011

yes,ddt can’t kill immediately

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