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

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

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Process Equipment and Plant Design
Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger

Permits the use of more tubes in a given shell diameter
Both B and C
Facilitates comparatively easier external cleaning because of large clearance
Permits the use of less tubes in a given shell diameter

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