A. Tempering
B. Chromising
C. Aluminising
D. Alloying
✅ The correct answer is option A.
Basic Chemical Engineering MCQs
The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)
A. X1.5
B. X0.8
C. X-1.5
D. X-0.8
✅ The correct answer is option B.
Current asset of a factory includes the
A. Goodwill of the company
B. Common stocks held by the company
C. Manufacturing plant & equipment
D. Inventory
✅ The correct answer is option C.
Fatigue strength of a metal is improved by
A. Overstressing
B. Scratching the surface
C. Raising the temperature
D. Understressing
✅ The correct answer is option D.
Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)
A. H
B. H/2
C. H/4
D. H/6
✅ The correct answer is option D.
Cast iron contains __________ percent carbon.
A. 2.5
B. 3.75
C. 4.75
D. 5.25
✅ The correct answer is option A.
Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.
A. Joule
B. Carnot
C. Rankine
D. Brayton
✅ The correct answer is option C.
Eutectoid composition of carbon steel at room temperature is
A. Cementite
B. Pearlite
C. Martensite
D. Ferrite
✅ The correct answer is option B.
The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.
A. Tension
B. Shear
C. Compression
D. Bending & tension
✅ The correct answer is option A.
Normalising of a casting does not
A. Induce stresses in it
B. Refine its grain structure
C. Reduce seggregation
D. Improve its mechanical properties
✅ The correct answer is option A.