Question

name two discoveries of chemistry which have helped mankind in the same discoveries have harmed the mankind and how

Answer 1

DDT is use as a insecticide ...
but it is harmful also.....
becoz..it does not get digested ....
cause health problems ....that's why it banned in many countries ...
but it can be easily available in India ...
I hope it will help u.......

Answer 2

(i) Discovery of chemical fertilizers and insecticides. These have helped in the growth of crops, but they are slow poisons for the mankind.

(ii) Discovery of nuclear energy. It has helped in the production of electricity in nuclear reactors but in led to making of atom bomb for destruction.