What is centrifugation? which substance is separated by this method?

Centrifugation is a technique which involves the application of centrifugal force to separate particles from a solution according to their size, shape, density, viscosity of the medium and rotor speed.

Explanation:

for example

You can separate cream from milk using this process , heavier particles can be separated from lighter from liquids.

centrifugation is when you use force to separate components of a substance you use centrifugation on blood when you separate plasma cells from blood cells

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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