Stone particles can be separated from rice by
Sieving
Handpicking
Threshing
Winnowing
The size of the stone is larger than that of rice. Hence, when the difference in size is huge, handpicking is used for the given separation.
Question 6
While preparing chapatis, Paheli found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour?
(a) Threshing
(b) Sieving
(c) Winnowing
(d) Filtration
What is winnowing, sieving, threshing, hand picking