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Process Equipment and Plant Design

Process Equipment and Plant Design
A binary liquid azeotropic mixture has boiling point lower than either of the components, when it shows __________ deviation from Raoult's Law.

Positive
None of these
No
Negative

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Process Equipment and Plant Design
The main purpose of providing stepping on the trays is to

Improve the flow condition
Decrease the pressure drop
Increase the residence time
Facilitate handling of large flow rate of liquid

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Process Equipment and Plant Design
Which of the following lengths of heat exchanger tubes are normally not used in practice?

6 metres
0.5 metre
2.5 metres
10 metres

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Process Equipment and Plant Design
The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.

5
10
2
15

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Process Equipment and Plant Design
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

1.5-2.5
44119
3.5-5.5
7.5-10.0

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Process Equipment and Plant Design
Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as

0.95
0.01
0.3
0.75

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