Which of the following methods cannot be applied to remove rice weevil?

Drying rice grains under the sun

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Spraying fungicides

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Spraying insecticides

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Handpicking

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Solution

The correct option is B Spraying fungicides
Spraying fungicides can kill harmful fungus that infect crops but not rice weevil, which is an insect. Spraying insecticides, handpicking and sun drying are the methods that can be applied to remove rice weevil.

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Give as many methods as you can for the following :

(a) Separating light materials from grain.

(2) Removing weevils from grain.

(d) Cleaning grain which has a lot of soil mixed in it.

(e) Cleaning muddy water.

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