Chemical Engineering Basics
The velocity at which individual particles from a fluidised bed are carried away by the fluid passing through it, is defined as the

Superficial velocity
Elutriation velocity
Terminal velocity
Minimum fluidisation velocity

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Chemical Engineering Basics
The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

Increasing the concentration of copper sulphate solution
Increasing the surface area of the electrodes
Decreasing the surface area of the electrodes
Increasing the concentration of zinc sulphate solution

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