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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.

None of these
Bubble cap plate
Sieve plate
Packed

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Process Equipment and Plant Design
In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.

10 to 15
2.5 to 4.0
0.5 to 1.5
5 to 10

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Process Equipment and Plant Design
A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of

20.8
20.2
2
None of these

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Process Equipment and Plant Design
Bubble cap plate column is

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

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Process Equipment and Plant Design
For identical operating conditions, the pressure drop over __________ tray is the highest out of the following.

Valve
Bubble cap
Sieve
Counterflow

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Process Equipment and Plant Design
Brass valves are usually made for pipe sizes __________ inches.

>3.5
?2
>2.5
?1

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