increases.
remains same.
decreases.
is unpredictable; may increase or decrease.
✅ The correct answer is option C.
Chemical Engineering MCQs
An underdesigned steam trap will
waste steam.
destroy itself of acceleration wear due to rapid recycling.
back up condensate and cause water hammer in steam line.
none of these.
✅ The correct answer is option C.
For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness ?
hemispherical
ellipsoidal (2 : 1)
conical
flat plate
✅ The correct answer is option B.
Sodium melts (at atmospheric pressure) at a temperature of __________ °C.
58
98
348
588
✅ The correct answer is option B.
In the design of a bag filter, the gas temperature is an important consideration, as it affects the
gas density
gas viscosity
fibre selection
all (a), (b) & (c)
✅ The correct answer is option D.
Which of the following is not an ore of uranium ?
Pitchblende
Kyanite
Carnotite
Rescolite
✅ The correct answer is option B.
Extraction of uranium from its ore is done by __________ method.
chemical
pyrometallurgical
physical beneficiation
electrometallurgical
✅ The correct answer is option A.
Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter )
0.2 D
0.5 D
0.66 D
0.80 D
✅ The correct answer is option A.
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of
1000
3000
5000
10000
✅ The correct answer is option D.
For turbulent flow (NRe > 2100) of low viscosity fluid (μ > 20cp) in steel pipes, the optimum inside pipe diameter is given by(where, Q = fluid flow rate, ft3/sec.ρ = fluid density, lb/ft3 μ = fluid viscosity, centipoise Di = optimum inside pipe diameter, inches)
Di, opt = 3.9 Q0.45 ρ0.13
Di, opt = 3.9 Q0.45 . μ0.95
Di, opt = 4.7 Q0.36 . μ3.2ρ0.13
Di, opt = 3 Q0.36 . μ0.88
✅ The correct answer is option A.