How can we separate bran,flour and sand. If they are mixed together.

Dear Student
First...add water. The sand will sink and the flour should wash away. and barn come on the surface of water

If you need to keep the flour, then you can sift instead. 
first barn take out on the surface of water using any filtering equipment 

Dump mixture into a pan and shake. this will cause the 2 to seperate. This will have to be done several times to completely seperate the two. 


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