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Process Equipment and Plant Design

Process Equipment and Plant Design
Welded joint efficiency in the design of chemical process equipment is taken as

0.75
0.85
0.95
0.55

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Process Equipment and Plant Design
Nominal size of a pipe is an indication of its __________ diameter.

Outer
None of these
Approximate
Inner

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Process Equipment and Plant Design
The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the

Larger reactor should come first
Smaller reactor should come first
Equal sized reactors are the best
None of these

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Process Equipment and Plant Design
Maximum plate efficiency is achieved in case of __________ flow.

Reverse
Cross
Cascade
Split

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Process Equipment and Plant Design
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always

< 1
>1
1
Equal to the order of reaction

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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
Facilitate handling of large flow rate of liquid
Increase the residence time

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