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Process Equipment and Plant Design

Process Equipment and Plant Design
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).

250
750
450
650

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Process Equipment and Plant Design
Theoretically calculated diameter of the stripping section of the continuous rectification column is __________ that of the enriching section.

Same as
Less than
More than
Either more or less (depending upon relative volatility)

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Process Equipment and Plant Design
The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about __________ times.the design pressure.

1.5 to 2
3 to 4
>5
4 to 5

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Process Equipment and Plant Design
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.

17-34
43929
88-105
52-68

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Process Equipment and Plant Design
For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.

Thrice
Half
Five times
Twice

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Process Equipment and Plant Design
Hold up of material in a operating rotary drier is in the range of

0.25 to 0.50
0.5 to 0.8
0.05 to 0.15
0.8 to 0.9

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