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

Each chemical here belongs to a distinct pesticide group, so the fastest method is to recall the group each one is classified under. Thiophanate-methyl belongs to the benzimidazole group of fungicides, used to control fungal infections in crops, which links it to Fungicide. Atrazine is a well known triazine-group herbicide sprayed to control weeds, linking it to Weedicide. Fenamiphos is an organophosphate compound applied to soil to control nematodes, linking it to Nematicide. Afidopyropen is a newer pyropene-class chemical developed to control aphids and other sucking insects, linking it to Insecticide. Putting these four links together gives (A)-(III), (B)-(I), (C)-(IV), (D)-(II). \[\boxed{\text{Option 2}}\]