Question

Define fumigation and fumigant. Give an example of a fumigant. How does fumigation differ from spraying ? Give two points.

CBSE Class IX Science LA (5 Marks)

Answer 1

Fumigation is a method in which the insecticide's solution is converted into fumes to kill the insects.

Fumigants are the insecticides that are used for making such fumes.                                                

Example of fumigant : EDB (Ethylene di-bromide).             

In fumigation the solution is converted into fumes and it is done during the storage of food grains
whereas in spraying, the solution remains in liquid form and it is done either before or after the
storage of food grains.

Answer 2

Fumigation is the process of using a fumigant to kill pests, such as insects or rodents, in a contained area, such as a building or a shipping container.

• A fumigant is a poisonous gas that is used for this purpose.

• An example of a fumigant is methyl bromide.

• Fumigation differs from spraying in the following ways:

• Delivery method: Fumigation involves the release of a gas, while spraying involves the use of a liquid.

• Scope of treatment: Fumigation is typically used to treat a large, enclosed space, while spraying is more suited for treating smaller areas or surfaces.

• Efficacy: Fumigation is often more effective at killing pests than spraying, as the gas can reach and penetrate hidden or hard-to-reach areas that liquids cannot. However, fumigation can be more expensive and time-consuming, as it requires the use of specialized equipment and the evacuation of the treated area.

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