A. Check the water level in the boiler
B. Check the feed water flow rate
C. Feed high pressure water to boiler and guard against its backflow through it
D. None of these
✅ The correct answer is option C.
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.
42. The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.
A. Flow output
B. Head developed
C. Overall efficiency
D. Weight
✅ The correct answer is option A.
43. Pick out the wrong statement about nucleate boiling.
A. Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface
B. Surface temperature is greater than the saturation temperature of the liquid
C. Heat transfer from the surface of the liquid is less than that in film boiling
D. The temperature is less than that of film boiling
✅ The correct answer is option D.
44. Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.
A. 746
B. 3000
C. 1000
D. 550
✅ The correct answer is option B.
45. LASER
A. Stands for Light Amplification by Stimulated Emission of Radiation
B. Has the same intensity as visible light
C. Can’t be used for cutting metals
D. None of these
✅ The correct answer is option A.
46. Semi-conductors normally employ __________ bonding.
A. Co-ordinate
B. Ionic
C. Covalant
D. Metallic
✅ The correct answer is option C.
47. The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.
A. 60 – 100
B. 400 – 700
C. 1200 -1500
D. 2000 – 2300
✅ The correct answer is option B.
48. In chemical dehumidification process
A. Wet bulb temperature increases
B. Dry bulb temperature remains constant
C. Dew point temperature increases
D. Dry bulb temperature increases
✅ The correct answer is option B.
49. In the floatation process, pine oil is used as the
A. Collector
B. Activator
C. Frother
D. Depressant
✅ The correct answer is option C.
50. Pick out the wrong conversion of absolute & kinematic viscosities.
A. 1 stoke = 1 cm²/sec
B. 1 N.sec/m² = 10 paise
C. 1 stoke = 1 m²/sec
D. 1 m²/sec = 10⁴ stokes
✅ The correct answer is option C.