Which of the following statement about DDT is false-
Correct Answer: It is contact poison
Description: Ans. is `a' i.e., Immediately kills the prey DDT (Dichloro-diphenyl-trichloroetheine) o DDT is an amorphous white powder. o Para-para isomer is the most active fraction --> contains 70-80% ofpara-para isomers. o It is primarily a contact poison. o It acts on CNS of insects and causes paralysis of legs and wings, convulsions and finally death. o It does not cause immediate death and takes several hours to kill the prey. o Its residual action may last as long as 18 months depending upon the treated surface. o It has no repellant action on insects. o Dose of DDT required is 100-200 mg per square foot. o Pyrethrum and DDT have synergistic action.
Category:
Social & Preventive Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now