Question
Chemistry Question on food preservatives
The rotenone is
A
a natural herbicide
B
a natural insecticide
C
an insect hormone
D
a bioherbicide.
Answer
a natural insecticide
Explanation
Solution
Natural insecticides are those which are obtained from microorganisms and plants. The first natural insecticide used by man is azadirachtin obtained from Azadirachta in die a. Rotenone is another natural insecticide which is obtained from the roots of Derris and Lonchocarpers. It is harmless to warm blooded animals.