1411. For large heat transfer area requirement, shell and tube heat exchanger is preferred, because it
Occupies smaller space
Is more economical
Is easy to operate and maintain
All of the above
✅ The correct answer is option D.
Chemical Engineering
Prepare with the best Chemical Engineering MCQs with answers and detailed explanations for exams and job tests. Our collection covers key topics such as chemical process calculations, thermodynamics, fluid mechanics, heat transfer, mass transfer, reaction engineering, instrumentation, and plant design. These Chemical Engineering multiple-choice questions are ideal for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and job interviews. Practice online with updated Chemical Engineering MCQs to strengthen your concepts and improve technical problem-solving skills.
1412. The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium. This is __________ law.
Kirchoffs
Planck’s
Wien’s displacement
Stefan-Boltzman
✅ The correct answer is option A.
1413. Reynold’s analogy states that
Nst α f
Nst α NRe
NNu α f
NRe α f
✅ The correct answer is option A.
1414. In the equation Q = UAΔt; Δt is
Geometric mean temperature difference
Arithmetic mean temperature difference
Logarithmic mean temperature difference
The difference of average bulk temperatures of hot and cold fluids
✅ The correct answer is option C.
1415. In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is
Linear
Hyperbolic
Parabolic
None of these
✅ The correct answer is option C.
1416. jH factor for heat transfer is not a function of the __________ number.
Reynolds
Nusselt
Grashoff
Both B & C
✅ The correct answer is option D.
1417. In case of a vertical tube evaporator, with increase in the liquor level, the
Capacity of the evaporator is decreased
Capacity of the evaporator is increased
True temperature drop increases
Both B and C
✅ The correct answer is option A.
1418. An insulator should have
Low thermal conductivity
High thermal conductivity
Less resistance to heat flow
A porous structure
✅ The correct answer is option A.
1419. In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is __________ the outlet temperature of the cold fluid.
Equal to
More than
Less than
Either more or less than (depending upon the fluid)
✅ The correct answer is option A.
1420. Heat transfer co-efficient (h1) for liquids increases with
Increasing temperature
Decreasing temperature
Decreasing Reynolds number
None of these
✅ The correct answer is option A.