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.
Chemical Engineering MCQs
Hoop (circumferential) stress induced in a thin walled ‘Horton Sphere’ used for the storage of liquid ammonia under pressure is
✅ The correct answer is option A.
Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele’s method, this method
is more accurate in finding the number of equilibrium stages.
accounts for the enthalpy changes in the process.
facilitates direct calculation of heat load on reboiler & condenser from, the diagram used in this method.
all ‘a’, ‘b’ & ‘c’.
✅ The correct answer is option D.
Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle ?
Segmental baffle
Flat plate extending across the wall
Disk type baffle
Helical type baffle
✅ The correct answer is option B.
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.
fixed charges initially
running cost of cooling water for condenser
vapour & liquid load both
running cost of steam for reboiler
✅ The correct answer is option A.
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.
1/10th
1/20th
1/30th
1/50th
✅ The correct answer is option C.
The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the __________ stress.
yield point
breaking
ultimate
none of these
✅ The correct answer is option C.
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.
5-Oct
15-20
30-35
35-40
✅ The correct answer is option B.
A stuffing box is used for
absorbing the contraction/expansion of pipeline due to temperature changes.
prevention of fluid leakage around moving parts.
facilitating smooth opening and closing of a valve.
reducing the resistance of fluid flow.
✅ The correct answer is option B.
The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from
0.5 to 1
1 to 1.5
1.5 to 2
2 to 2.5
✅ The correct answer is option A.