Question

Lighter impurities like dust when mixed
with rice or pulses can be removed by
a. filtration
b. sedimentation
c. decantation
d. winnowing

Answer 1

Lighter impurities like dust when mixed with rice or pulses can be removed by winnowing as well as decantation.

Winnowing blows the dust particles away with air and decantation pours down the lighter dust particles along with water keeping the heavy material below when poured out.

 Both the methods can be applied to get a better result and get clean rice or pulses. This process is very easy and popular.

Answer 2

Answer:

winnowing, decantation