A. 1/k
B. k
C. k²
D. 1/k²
✅ The correct answer is option B.
Basic Chemical Engineering MCQs
In case of simple harmonic motion, displacement is proportional to the
A. Velocity
B. Acceleration
C. Both A & B
D. Neither A nor B
✅ The correct answer is option B.
For the Stoke’s law to be valid in the case of a falling sphere in a fluid, the
A. Reynolds number (based on sphere diameter) should be < 1
B. Flow around the sphere should be in turbulent region
C. Sphere must be metallic
D. Fluid density should be constant
✅ The correct answer is option C.
__________ is not a case hardening process.
A. Carburising
B. Nitriding
C. Cyaniding
D. Annealing
✅ The correct answer is option A.
The entropy change for a spontaneous process is
A. > 0 for the system
B. < 0 for the system
C. > 0 for the system & the surrounding
D. < 0 for the system & the surrounding
✅ The correct answer is option D.
For hardening high alloy steel, it is to be heated slowly and uniformly to avoid
A. Local hardening
B. Scale formation
C. Segregation
D. Warpage
✅ The correct answer is option D.
Which of the following is a neutral flux used in the pyrometallurgy of metal extraction?
A. Quartz
B. Flourspar
C. Dolomite
D. Manganese ore
✅ The correct answer is option B.
Pick the odd man out of the following.
A. Calorising
B. Pack carburising
C. Nitriding
D. Cyaniding
✅ The correct answer is option A.
Annealing of cast iron
A. Softens it to facilitate machining
B. Decreases the free carbon
C. Increases the strength
D. None of these
✅ The correct answer is option A.
Protection of ship hulls against sea water corrosion is done by coating with zinc because of the fact that zinc compared to iron is
A. Reduced preferentially
B. Cheaper
C. Oxidised preferentially
D. Lighter
✅ The correct answer is option C.