Question

when is sieving used to seperate impurities?​

Answer 1

Answer:

Sieving is used when components of a mixture have different sizes. Sometimes, it may not be possible to separate components of a mixture by winnowing and handpicking. For example, there may be lighter impurities like dust or soil particles in rice or pulses.

Answer 2

. Sieving is used in flour mills to separate broken particles of grains from flour. It is also used at construction sites to separate lumps, smaller stones from the mixture of sand and cement