Is Matter Around Us Pure — Science STD 9 — Question
Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure3 Marks
Question
Name the process associated with the following: Milk is churned to separate cream from it.
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Answer
This process is centrifugation. Milk is put in a closed container in big centrifuge machine. When machine is switched on, milk is rotated at a very high speed. Due to this, milk separates into ‘cream’ and ‘skimmed milk’. The cream being lighter, floats over the skimmed milk and then can be removed.
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