4. When do we use the process of centrifugation? State the principle involved in this process. list its any
two applications in our daily life.
5. How does pressure help in liquefaction of gases?
Answers
Centrifugation is used for churning the milk to make butter or other items.
The centrifuge works using the sedimentation principle, where the centrifugal acceleration causes denser substances and particles to move outward in the radial direction. At the same time, objects that are less dense are displaced and move to the center.
two applications in daily life:
it is used to separate skim milk from whole milk.
a centrifuge is used to separate blood cells from plasma cells.
5)
Pressure, volume and temperature help in liquefaction of gases. Pressure brings close to molecules of a gas that are far apart from each other. When more and more pressure is applied on gas molecules they come closer to each other so inter molecular forces start producing between gas molecules.
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ANSWER:
4. We use centrifugation when we need to separate out small solid particles from a liquid . like cream from milk. principle is CENTRIFUGAL FORCE.
application:
1. to separate cream from milk
2. to separate RBC, plasma ,etc from blood.