Multiple choice

Which component from a mixture of grains, sand, stone and sawdust can be blown away by the wind?

  1. Grains

  2. Stone

  3. Sawdust

  4. Sand

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The component which can be blown away by the wind has to be lighter. Out of grains, sand, stone and sawdust, only sawdust is the impurity which is lighter in weight and can easily be blown off by wind.