ChemistryIs it true that rice flakes and rice grains can be separated by winnowing?

Is it true that rice flakes and rice grains can be separated by winnowing?


  1. A
    True
  2. B
    False 

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    Solution:

    The above statement is true. Farmers use a process known as winnowing to remove rice flakes from grains. In this process, heavier and lighter components of a mixture are separated by the help of wind or blowing air. Coffee beans are also removed from sugar using this process. In this process, grains are allowed to fall from a certain height. Since flakes are lighter than grains, they are removed easily by air blow.
     

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