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Process Equipment and Plant Design

Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Higher
Lower
Unpredictable
Same

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Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

25
1
15
5

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Process Equipment and Plant Design
At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

Increases
May increase or decrease depending upon the solubility of the gas in the liquid
Remains same
Decreases

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Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dt)/ph
(ph - dh . dt/2)/ph
(ph - dh)/ph
(ph - dh)/dh

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Process Equipment and Plant Design
The normal range of velocity of water in pipes is __________ m/sec.

0.1-0.5
15-30
1-2
10-50

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Process Equipment and Plant Design
In chemical process equipments, the conical bottom heads used, usually has an apex angle of

40°
20°
80°
60°

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