Question

Match List-I with List-II

Choose the correct answer from the options given below:

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

Hint:

Alachlor is one of the most widely studied chloroacetamides (C-I).
Identifying this single link eliminates options (A) and (B), leaving only (C) and (D).
Connecting Pyroxasulfone to Isoxazolines (A-IV) confirms option (C).

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Herbicides are grouped into specific chemical families based on their molecular structures and modes of action.

Step 3: Detailed Explanation:
- Isoxazolines (A): Matches with Pyroxasulfone (IV), a modern pre-emergence herbicide belonging to the isoxazoline class that inhibits very-long-chain fatty acid (VLCFA) synthesis.
- Diphenylethers (B): Matches with Aclonifen (III), a well-known diphenyl ether class herbicide.
- Chloroacetamides (C): Matches with Alachlor (I), a classic pre-emergence chloroacetamide herbicide used for grass control in maize and soybeans.
- Carbamates (D): Matches with Asulam (II), a systemic carbamate herbicide used primarily in sugarcane.

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