chemical engineering process equipment and plant design MCQs – Page 15

Practise multiple-choice questions from chemical engineering process equipment and plant design for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering process equipment and plant design Mcqs
281. The shell side pressure drop in a shell and tube heat exchanger is maximum for _______________ baffle?
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A. Independent of the type of

B. Orifice

C. Segmental

D. Disk and ring

282. The maximum liquid gradient over a tray must not exceed__________________?
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A. 5?

B. 2?-3.5?

C. 0.5? -1.25?

D. Half the tray spacing

283. Rate of filtrate delivery is inversely proportional to the___________________?
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A. Filtering area & the pressure difference driving force

B. Viscosity of filtrate

C. Cake & filter medium resistance

D. Both A. and B.
284. The value of fouling factor depends upon the__________________?
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A. Velocity of process fluid containing suspended solids

B. Suspended solids in the fluid

C. Characteristic of process fluid

D. All A., B. and C.
285. The thermal stress in a metallic bar does not depend upon the_____________________?
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A. Changes in temperature

B. Cross-sectional area

C. Both A. and B.

D. Neither A. nor B.

286. Longitudinal stress induced in a thin walled cylindrical storage vessel is __________________?
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A. pD/4t

B. pD/3t

C. pD/2t

D. pD/6t

287. Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure ?
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A. Smaller dia vessel

B. Strength of the vessel is same irrespective of the diameter

C. Larger dia vessel

D. Larger dia long vessel

288. Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation ?
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A. Sorel-Lewis method

B. McCabe-Thieles method

C. None of these

D. Ponchon-Savarit method

289. Which of the following is used to set the diameter of the distillation column ?
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A. Length of straight rectangular weir on cross-flow tray

B. Static submergence

C. Allowable vapour velocity

D. Number of theoretical plates

290. Optimum reflux ratio in a continuous distillation column is determined by the__________________?
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A. None of these

B. Total cost consideration (fixed cost of the column plus the cooling water & steam cost)

C. Flooding limit of the column

D. Maximum permissible vapour velocity

291. Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower ?
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A. All A., B. and C.

B. Size, shape, orientation and surface of the packing particles

C. Density and viscosity of fluids

D. Fluid flow rates

292. For a given fluid, as the pipe diameter increases, the pumping cost ____________________?
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A. Increases

B. Remain unaffected

C. May increase or decrease depending upon whether the fluid is Newtonian or non-Newtonian

D. Decreases
293. In sieve plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally ______________ times the hole diameter to give the required hole area?
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A. 0.5 to 1.5

B. 10 to 15

C. 5 to 10

D. 2.5 to 4.0
294. Excessive liquid gradient on a tray may result in the______________________?
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A. Back trapping

B. Gas blowing beneath cap skit

C. All A., B. and C.

D. Maldistribution of gas

295. In case of a continuous distillation column, increase in reflux ratio may result in the______________?
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A. Greater cost for the reboiler heat supply

B. Greater cost for the condenser coolant

C. Lower fixed charges for the column

D. All A., B. and C.
296. Hazards associated with the relief valve leakage for extremely hazardous material storage can be taken care of by providing___________________?
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A. Dikes

B. None of these

C. Rupture diaphragm

D. Surge chamber

297. Height of the flights in the rotary drier is in the range of___________________?
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A. 0.08 to 0.12 d

B. 0.02 to 0.05 d

C. 0.2 to 0.5 d

D. 0.5 to 0.6 d

298. Pick out the correct statement___________________?
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A. Centre to centre distance between two consecutives rivets in a row is called the pitch

B. A riveted joint made in overlapping plates is called butt joint

C. Hole size drilled in riveted plates is less than the actual size of the rivet

D. None of these

299. The normal range of velocity of steam in pipes is _________________________ m/sec?
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A. 0.1-0.5

B. 20-Oct

C. 80-100

D. 5-Jan

300. Bubble cap diameter used for the distillation column having diameter ranging from 1.5 to 4.5 metres is about ______________ mm?
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A. 200

B. 10

C. 50

D. 100