4-Aug
17-34
52-68
88-105
✅ The correct answer is option B.
Chemical Engineering MCQs
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
decreases upwards.
increases upwards.
remains same throughout.
may decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell.
✅ The correct answer is option A.
In a shell and tube heat exchanger, triangular pitch arrangement as compared to square pitch arrangement
results in higher shell side pressure drop.
can accomodate less number of tubes for a given shell diameter.
facilitates easier shell side cleaning; hence is more suitable for handling high dirt factor shell side fluid.
creates relatively lower turbulence on the shell side resulting in lower shell side heat transfer co-efficient.
✅ The correct answer is option A.
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.
1
5
15
25
✅ The correct answer is option D.
In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of __________ mm.
3-May
5-Nov
Aug-15
Dec-18
✅ The correct answer is option B.
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.
1.1 to 1.5
1.6 to 2
2.2 to 2.6
2.7 to 3
✅ The correct answer is option A.
In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)
Aa = Sa
1.2 Aa = 1.2 Sa
Sa = 1.5 Aa
Aa = 1.5 Sa
✅ The correct answer is option A.
Hole diameter of the seive trays in the distillation column ranges from __________ mm.
lto3
4 to 8
3 to 12.5
12.5 to 18.5
✅ The correct answer is option C.
In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ __________ cms.
1.2
0.5
3.8
6.8
✅ The correct answer is option C.
Height of the flights in the rotary drier is in the range of
0.08 to 0.12 d
0.02 to 0.05 d
0.2 to 0.5 d
0.5 to 0.6 d
✅ The correct answer is option A.