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Process Equipment and Plant Design

Process Equipment and Plant Design
Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

Same
Less
More
Either A or B; no generalisation can be made

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Process Equipment and Plant Design
Liquid gradient over the tray results due to the

Resistance offered to flow of liquids by caps & risers and the flow of gas
Large reflux ratio
Low gas velocity
Large plate spacing

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Process Equipment and Plant Design
The LMTD correction factor (FT) is applied in __________ heat exchangers.

All of these
1-1 cocurrent
All multipass
Double pipe

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Process Equipment and Plant Design
A minimum clearance of about __________ mm is maintained between the distillation column wall and the bubble cap.

19
95
76
38

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Process Equipment and Plant Design
The slope of the feed line in distillation opeartion is given by (where, q = fraction of the feed stream that is liquid.)

-q
None of these
-q/(q-1)
-q/(1-q)

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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.

None of these
NH₃
SO₂
CO₂

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