Explore topic-wise MCQs in Mass Transfer.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Mass Transfer knowledge and support exam preparation. Choose a topic below to get started.

1.

Find the permeability if diffusivity is 2 units and solubility coefficient is 5 units assume all are in SI units.

A. 10 units
B. 2.5 units
C. 0.4 units
D. None of the mentioned
Answer» B. 2.5 units
Discussion
2.

Macroporic surrounding of microscopic pellets powders of different magnitude in size is _______

A. Disperse
B. Bi-disperse
C. Tri-disperse
D. None of the mentioned
Answer» C. Tri-disperse
Discussion
3.

If the pore of the solid is inaccessible to external fluids then it is known as dead end.

A. True
B. False
Answer» C.
Discussion
4.

If the two gases are separated by a polymer membrane, the extent of diffusion depends on _______ law.a) Hendyb) Raoultc) Newtond) None of the mentioned 6.For permanent gases diffusivity the order is _________ sq.m/s

A. Hendyb) Raoultc) Newtond) None of the mentioned 6.For permanent gases diffusivity the order is _________ sq.m/sa) 10-7
B. Raoultc) Newtond) None of the mentioned 6.For permanent gases diffusivity the order is _________ sq.m/sa) 10-7b) 10-8
C. Newtond) None of the mentioned 6.For permanent gases diffusivity the order is _________ sq.m/sa) 10-7b) 10-8c) 10-9
D. None of the mentioned 6.For permanent gases diffusivity the order is _________ sq.m/sa) 10-7b) 10-8c) 10-9d) 10-10View Answer
Answer» B. Raoultc) Newtond) None of the mentioned 6.For permanent gases diffusivity the order is _________ sq.m/sa) 10-7b) 10-8
Discussion
5.

Find the activated diffusivity of carbon if energy of activation is 6 kJ; the value of constant diffusivity is 2.5 sq.m/sec. (Hint: the value of exponential of (-6/RT) is 2.55)

A. 6.375 sq.m/s
B. 1.02 sq.m/s
C. 15.3 sq.m/s
D. 16.25 sq.m/s
Answer» B. 1.02 sq.m/s
Discussion
6.

FIND_THE_PERMEABILITY_IF_DIFFUSIVITY_IS_2_UNITS_AND_SOLUBILITY_COEFFICIENT_IS_5_UNITS_ASSUME_ALL_ARE_IN_SI_UNITS.?$

A. 10 units
B. 2.5 units
C. 0.4 units
D. None of the mentioned
Answer» B. 2.5 units
Discussion
7.

MACROPORIC_SURROUNDING_OF_MICROSCOPIC_PELLETS_POWDERS_OF_DIFFERENT_MAGNITUDE_IN_SIZE_IS________?$

A. Disperse
B. Bi-disperse
C. Tri-disperse
D. None of the mentioned
Answer» C. Tri-disperse
Discussion
8.

If the pore of the solid is inaccessible to external fluids then it is known as dead end?

A. True
B. False
Answer» C.
Discussion
9.

The solute movement of fluid on solids are __________

A. Hygrodynamic
B. Hydrodynamic
C. Fluid dynamic
D. None of the mentioned
Answer» C. Fluid dynamic
Discussion
10.

For permanent gases diffusivity the order is _________ sq.m/s

A. 10<sup>-7</sup>
B. 10<sup>-8</sup>
C. 10<sup>-9</sup>
D. 10<sup>-10</sup>
Answer» E.
Discussion
11.

If the two gases are separated by a polymer membrane, the extent of diffusion depends on _______ law.

A. Hendy
B. Raoult
C. Newton
D. None of the mentioned
Answer» B. Raoult
Discussion
12.

The term activated means _____________

A. Pressure dependency
B. Temperature dependency
C. Volume dependency
D. None of the mentioned
Answer» C. Volume dependency
Discussion
13.

Find the activated diffusivity of carbon if energy of activation is 6 kJ; the value of constant diffusivity is 2.5 sq.m/sec. (Hint: the value of exponential of (-6/RT) is 2.55)

A. 6.375 sq.m/s
B. 1.02 sq.m/s
C. 15.3 sq.m/s
D. 16.25 sq.m/s
Answer» B. 1.02 sq.m/s
Discussion
14.

Find the diffusivity through slab if N flux of A 4 mol/sq.m sec, concentration difference is 2mol/cu.m and distance is 3 m.

A. 2 sq.m/s
B. 4 sq.m/s
C. 6 sq.m/s
D. 8 sq.m/s
Answer» D. 8 sq.m/s
Discussion
15.

Find the operation where diffusion of solids not occurs

A. Adsorption
B. Leaching
C. Drying
D. Distillation
Answer» E.
Discussion