Explanation
Winnowing is a farming method developed by ancient people for separating grain from the chaff. It is also used to remove weevils or other pests from stored grain. Threshing, which is the loosening of grain or seeds from the husks and straw, comes before winnowing. It is used for heterogeneous solid-solid mixtures.
The process of settling down of heavier, insoluble particles in an undisturbed mixture solution is called:
Sieving can be used only when the components of the mixture have:
A mixture contains two solids A and B. Solid A is light in weight while solid B is very heavy. Their sizes are almost the same. Here, A is the unwanted component. To get pure solid B, which separation method would you suggest?
A few coloured glass pieces that are big in size are mixed with sugar. The easiest way to separate them is:
Wheat flour can be separated from the wheat bran by:
How will you obtain common salt from sea water?
Evaporation followed by condensation occurs in:
Which technique can be used to separate iron from a mixture of iron and copper?
Assertion and reason both are correct statements and reason is the correct explanation for assertion.
Assertion and reason both are correct statements but the reason is not the correct explanation for assertion.
Assertion is correct statement but reason is the wrong statement.
Assertion is wrong statement but reason is correct statement
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