Chemical Engineering MCQs

The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

by
1-May
20-40
100-150
1000-1500
✅ The correct answer is option B.

In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a

by
clearance of 25-75 mm.
cap pitch of 1.3-2 times the cap diameter.
either ‘a’ or ‘b’.
neither ‘a’ nor ‘b’.
✅ The correct answer is option C.

In the design of a shell and tube heat exchanger, the corrosion allowance

by
need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc.
for carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm.
for internal cover and tube sheet is provided on both the sides.
all (a), (b) & (c).
✅ The correct answer is option D.

Normally, the plate thickness of the bottoms and roofs of vertically cylindrical storage vessels as compared to that of the cylindrical shell is

by
more
less
same
more or less depending upon the pressure & temperature inside the vessel and the nature of the fluid contained therein.
✅ The correct answer is option B.