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Process Equipment and Plant Design

Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

NH₃
CO₂
None of these
SO₂

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Process Equipment and Plant Design
Vertical vessels are not supported by

Columns
Brackets
Skirts
Saddles

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Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

1.2
1
0.85
< 0.5

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Process Equipment and Plant Design
Stage efficiency for packed tower varies with the

Fluid rates and fluid properties
All of these
Type & size of packing
Operating pressure and column diameter

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Process Equipment and Plant Design
The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

Less than
More than
Either B or C; depends on maximum permissible internal pressure
Equal to

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Process Equipment and Plant Design
__________ liquor is best handled in a long tube vertical evaporator.

Scaling
Foamy
Viscous
Salting

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