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Process Equipment and Plant Design

Process Equipment and Plant Design
Longitundinal stress induced in a thin walled cylindrical storage vessel is

PD/4t
PD/6t
PD/3t
PD/2t

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Process Equipment and Plant Design
Bubble cap plate column is

A finite stage contactor
A continuous contactor
A differential stage contactor
Used only for distillation, not for absorption

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Process Equipment and Plant Design
Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if

Both B & C
Wall thickness is > 30 mm
Plain carbon steel and cast iron parts are used
Material of construction is high alloy steel

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Process Equipment and Plant Design
Pressure differential maintained across a continuous rotary vacuum filter is in the range of __________ mm Hg column.

100 to 150
50 to 100
250 to 500
600 to 700

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Process Equipment and Plant Design
Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.

1.5 to 2
5 to 10
2.5 to 5
10 to 15

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Process Equipment and Plant Design
Back-trapping in a distillation column results due to

Low gas velocity
High gas velocity
Low reflux ratio
Excessive liquid gradient over the tray

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