Question

Given below is the list of few chemicals that are used for protection of crops
i) dalapon

ii) butachlor

iii) malathion

iv) simazine

v) disyston

vi) gammexane
How many of these are used as insecticides?

• A. 3
• B. 4
• C. 2
• D. 5

Answer 1

The correct option is A 3

Name of the compound	uses
Dalapon	It is used as a herbicide and acts on the perennial grasses. It controls the specific weed species and leaving the desired crops relatively unharmed.
Butachlor	It is used as a herbicide. It is mainly used in the form of granules in rice.
Malathion	It is used as an insecticide. It is basically used in mosquitoes eradication.
Simazine	It is used as a herbicide. It is used to control broad-leaved weeds and annual grasses.
Disulfoton	It is used as an insecticide. It is effective against the sucking insects e.g. beet flies,
Gammexane	It is used both as an agricultural insecticide and pharmaceutical purpose.

So, the correct answer is ' 3'.