Question

rice and wheat can be easily seperated by.....

Answer 1

I hope this may be seiving. Because the different particles can separated by the process of seiving. The process if separating husk is winnowing. The process of separating two same size of particles is handpicking . The process of separating smaller substances is threshing.
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These explanations are not so exact . This is only to understand the fact.

Hope this is helpful to you .

Answer 2

The correct ans will be seiving for this because Sieving is used when two component of a mixture have different particle size.