Question

Match List-I with List-II
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• A. (A)-(IV), (B)-(II), (C)-(III), (D)-(I)
• B. (A)-(IV), (B)-(II), (C)-(I), (D)-(III)
• C. (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
• D. (A)-(IV), (B)-(III), (C)-(I), (D)-(II)

Hint:

To help identify chemical classes from active ingredient names:
- Suffix -thrin (e.g., Cypermethrin, Deltamethrin) indicates a Synthetic Pyrethroid.
- Suffix -prid (e.g., Acetamiprid, Imidacloprid) indicates a Neonicotinoid.
- Suffix -phos (e.g., Chlorpyriphos, Monocrotophos) indicates an Organophosphate.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Chemical insecticides are classified into distinct chemical families or classes based on their active ingredients, molecular structures, and modes of action on target pests.

Step 3: Detailed Explanation:
Let us match each insecticide with its chemical class:
- (A) Acetamiprid: This is a systemic insecticide that acts on the central nervous system of insects. It belongs to the (IV) Neonicotinoid class, which is derived from or structurally similar to nicotine.
- (B) Cypermethrin: This is a synthetic insecticide based on the chemical structure of natural pyrethrins found in chrysanthemum flowers. It belongs to the (III) Synthetic pyrethroid class.
- (C) Chlorpyriphos: This organophosphorus compound inhibits the acetylcholinesterase enzyme, disrupting nervous transmission. It belongs to the (I) Organophosphate class.
- (D) Lindane: This is the gamma isomer of hexachlorocyclohexane (\(\gamma\)-HCH). It is an organochlorine compound that belongs to the (II) Chlorinated hydrocarbon class.
This matching sequence yields: (A)-(IV), (B)-(III), (C)-(I), (D)-(II), which corresponds to Option (D).

Step 4: Final Answer:
The correct matching sequence is (A)-(IV), (B)-(III), (C)-(I), (D)-(II).