Question

Match Chemicals with their Use.

Chemical	Used as
(A) Thiophanate-methyl	(I) Weedicide
(B) Atrazine	(II) Insecticide
(C) Fenamiphos	(III) Fungicide
(D) Afidopyropen	(IV) Nematicide

Choose the correct answer from the options given below:

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

Hint:

Match each chemical to the pest group it controls: fungus, weed, nematode, or insect.

Answer 1

The Correct Option is B

Step 1: Thiophanate-methyl is a systemic fungicide used against fungal diseases, so (A) matches (III) Fungicide. Step 2: Atrazine is a triazine herbicide used to kill weeds, so (B) matches (I) Weedicide. Step 3: Fenamiphos is an organophosphate nematicide used against plant-parasitic nematodes, so (C) matches (IV) Nematicide. Step 4: Afidopyropen is an insecticide used mainly against sap-sucking insects like aphids, so (D) matches (II) Insecticide. This gives (A)-(III), (B)-(I), (C)-(IV), (D)-(II), which is option 2.