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Process Equipment and Plant Design

Process Equipment and Plant Design
In shell and tube heat exchangers, straight tie rods are used to

Account for thermal strain
Fix the tubes in position
Hold baffle in space
None of these

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Process Equipment and Plant Design
The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)

0.75 d
0.5 d
2 d
D

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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.

CO₂
NH₃
None of these
SO₂

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Process Equipment and Plant Design
In a distillation column, minimum clearance to be maintained betweeen the overflow weir and the last row of the bubble caps is __________ cms.

15
7.5
2.5
20

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Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

55
35
20
5

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Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Running cost of steam for reboiler
Running cost of cooling water for condenser
Vapour & liquid load both
Fixed charges initially

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