InterviewSolution
Saved Bookmarks
| 1. |
Define the term pesticides? What are three categories of pesticides? |
|
Answer» Pesticides are substances which are used to kill or block the reproductive process of unwanted organisms. The three main categories of pesticides are: (i) Insecticides: These are used to control insects and curb diseases and protect crops. (ii) Herbicides: These are used to kill weeds .Example- sodium chlorate (NaClO3), sodium arsinite(Na3AsO3) (iii) Fungicides: These are used to check the growth of fungi. Example-methyl, mercury. |
|