Process Equipment and Plant Design
In which of the following evaporators, steam is fed inside the tube while the liquor is outside the tube?

Long tube vertical evaporator
Short tube vertical evaporator
Horizontal tube evaporator
None of these

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Process Equipment and Plant Design
In a bag filter, the pressure drop increases directly as the

Viscosity of the gas and inversely as density of the gas
Density of the gas, but is independent of the viscosity of the gas
Density of the gas and inversely as viscosity of the gas
None of these

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