Question

Given below are Four statements :
Statement (I) : Bromadiolone is used as a rodenticide.
Statement (II) : Atrazine is a herbicide.
Statement (III) : Carbamate group of pesticides was related to the Bhopal gas incident.
Statement (IV) : Rotenone a, natural compound is used as an insecticide and herbicide.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Statements (I) and (II) and Statements (III) and (IV) are true.
• B. Statements (I) and (II) and Statements (III) and (IV) are false.
• C. Statement (I) is true but Statement (II) is false.
• D. Statement (III) is false but Statement (IV) is true.

Hint:

To remember key pesticide classes:
- Atrazine, Simazine $\rightarrow$ Triazine Herbicides.
- Bromadiolone, Warfarin $\rightarrow$ Anticoagulant Rodenticides.
- Carbaryl, Carbofuran $\rightarrow$ Carbamate Insecticides.
- Rotenone, Pyrethrin, Neem $\rightarrow$ Natural/Botanical Pesticides.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
This question covers the classification, chemical categories, historical context, and applications of different agricultural pesticides.

Step 3: Detailed Explanation:
Let us evaluate each of the four statements:
Statement (I): "Bromadiolone is used as a rodenticide."
This statement is correct.
Bromadiolone is a potent, second-generation anticoagulant compound widely used as a rodenticide to control rat and mice populations.
Statement (II): "Atrazine is a herbicide."
This statement is correct.
Atrazine is a selective triazine herbicide used to control pre- and post-emergence broadleaf and grassy weeds in crops like maize and sugarcane.
Statement (III): "Carbamate group of pesticides was related to the Bhopal gas incident."
This statement is correct.
The Union Carbide factory in Bhopal manufactured Carbaryl (Sevin), which is a carbamate insecticide.
The tragic 1984 gas leak involved methyl isocyanate (MIC), which was a key chemical intermediate used to manufacture this carbamate pesticide.
Statement (IV): "Rotenone a, natural compound is used as an insecticide and herbicide."
This statement is correct.
Rotenone is a naturally occurring, odorless ketone compound extracted from the roots of several tropical leguminous plants (such as *Derris* species).
It is used as a natural, broad-spectrum insecticide and piscicide, and sometimes as a selective organic herbicide to suppress specific weed species.

Step 4: Final Answer:
All four statements (I, II, III, and IV) are correct.
This corresponds to Option (A).