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ORCHIDS The International School

Methods of Separation

1) What Do You Understand by Churning?

  • Churning is a process done using a manual or mechanised churner.
  • It is used to separate the fat from a mixture.
  • Butter is separated from cream or curd by this process.

2) Write the Functions of a Membrane Filter.

  • Membrane filters are installed in water purifiers.
  • These filters have minute pores through which water can pass, but the insoluble impurities in the water are strained and separated.
  • As membrane filters collect all the impurities, they easily become dirty within a few months. So, the membranes have to be changed from time to time.


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