Chemical Engineering Archives

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.

1311. Shell side pressure drop in a shell and tube heat exchanger does not depend upon the

Baffle spacing & shell diameter

Tube diameter & pitch

Viscosity, density & mass velocity of shell side fluid

None of these

✅ The correct answer is option D.

1312. If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law.

Parabolic

Hyperbolic

Linear

Logarithmic

✅ The correct answer is option A.

1313. For specified tube outside diameter, higher BWG means higher

Tube thickness

Cross-sectional area

Weight per unit length

None of these

✅ The correct answer is option B.

1314. In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of

Concentrations

Chemical potentials

Activity co-efficients

Mass transfer co-efficients

✅ The correct answer is option A.

1315. In an extended surface heat exchanger, fluid having lower co-efficient

Flows through the tube

Flows outside the tubes

Can flow either inside or outside the tubes

Should not be used as it gives very high pressure drop

✅ The correct answer is option B.

1316. Fruit juice (a heat sensitive material) can be concentrated in a __________ evaporator.

Long tube

Falling film

High pressure

None of these

✅ The correct answer is option B.

1317. A BTU/hr.ft.2 °F is equal to

1 kcal/hr. m²°C

4.88 kcal/hr. m.2°C

1 kcal/hr. m².°K

None of these

✅ The correct answer is option B.

1318. Wavelength corresponding to the maximum energy is inversely proportional to the absolute temperature. This is __________ law.

Stefan’s

Dalton’s

Wien’s

Kirchoffs

✅ The correct answer is option C.

1319. 1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is

520

200

400

500

✅ The correct answer is option C.

1320. Forced circulation evaporators are normally used for concentrating liquids having

Scaling characteristics

High viscosity

Both A & B

Neither A nor B

✅ The correct answer is option C.