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Process Equipment and Plant Design

Process Equipment and Plant Design
The absorption factor is defined as (where, S₁ = slope of the equilibrium curve, S₂ = slope of the operating line)

1/S₁.S₂
S₁/S₂
S₁.S₂
S₂/S₁

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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.

CO₂
SO₂
None of these
NH₃

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Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

Remains same
Decreases
Increases
Remains same, only if the number of tube passes does not change

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Process Equipment and Plant Design
Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as

D = 1.5 t
D = 1.6 √t
D = 1.1 t
D = 3√t

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Process Equipment and Plant Design
For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness?

Hemispherical
Conical
Flat plate
Ellipsoidal (2 : 1)

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Process Equipment and Plant Design
What is the slope of the operating line in the stripping section of a distillation column?

< 1
?
> 1

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