Question

Which among the following compounds is used as selective weed killer?

Options

• Picric acid

• 2, 4-dichlorophenoxy acetic acid

• 2, 4, 6-trichlorophenoxy acetic acid

• Salol

Answer 1

2, 4-dichlorophenoxy acetic acid

Explanation:

Selective weed killers include 2, 4-dichlorophenoxy acetic acid (also known as 2, 4-D). It's a systemic pesticide that selectively kills most broad-leaved weeds while leaving grasses like cereals and grasses mostly untouched.