Fluidised beds are formed, when the

1.	Fluidised beds are formed, when the
A.	fluid friction is zero
B.	gravity force is less than the fluid friction.
C.	pressure forces equal gravity forces.
D.	sum of the fluid friction and pressure forces is equal and opposite to gravity forces.
Answer» C. pressure forces equal gravity forces.

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Fluidised beds are formed, when the

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