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21
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.
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Answer: Option C
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22
A pipe is generally made of circular cross-section, because a circular cross-section has the
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Answer: Option C
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23
For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell
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Answer: Option A
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24
Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.
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Answer: Option B
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25
What is the slope of the feed line, if the feed to a distillation column is a saturated liquid?
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Answer: Option B
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26
With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will
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Answer: Option A
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27
LMTD correction factor is used in heat exchanger design for
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Answer: Option B
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28
Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.
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Answer: Option B
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29
Pick out the wrong statement
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Answer: Option C
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30
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
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Answer: Option C
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