Question

Which of the following pesticides are non - biodegradable?

• A. Triazines
• B. Organophosphates
• C. Organochlorines
• D. None of the above

Answer 1

Answer: (C)

Organochlorines

The organochlorines are the first generation insecticides. They are also known as chlorinated hydrocarbons. These compounds are mainly used as contact insecticides and ectoparasiticides. Many organochlorines are harmful because they do not break down easily. This means they stay in the environment and our bodies for a long time. The organophosphorus groups of pesticides are the second generation insecticides which are employed as contact insecticides. They readily undergo biodegradation and do not bioaccumulate. The triazine herbicides constitute a class of crop protection chemicals of great agronomic importance around the world. They are also biodegradable.

Thus, the correct answer is option C.