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प्रश्न
What is sieving? Where is it used?
उत्तर
Sieving is the method of separation of fine particles from bigger particles by allowing the finer particles to pass through the holes of a sieve, leaving the bigger particles in the sieve itself.
It is generally used in homes to separate flour from impurities such as pieces of stone, stalk, and husk. It is also used at construction sites to separate sand from small stones.
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संबंधित प्रश्न
Define Crystallisation
State the principle involved in separation of solid-solid mixtures by sieving
Draw a neat labelled diagram for the separation of the following mixture.
Coarse sand from fine sand
State the technique involved in separating the following:
Rice powder from soil particles
State the technique involved in separating the following:
Large diamonds from very small diamonds
Give reasons for the following:
Two varieties of wheat flour cannot be separated by sieving.
Give reasons for the following:
Both components of a soluble solid-liquid mixture cannot be recovered by evaporation.
______ is used to separate gravel from the sand at a construction site.
Pure rava, when adultered with wheat flour, is separated by ______.
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?
