A. Flow rate of molten metal
B. Specific gravity of a liquid
C. Composition of alloys
D. Concentration of a solution
✅ The correct answer is option B.
Chemical Engineering MCQs
Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area ; in the casting)
A. V/A
B. V/A²
C. V²/A
D. V²/A²
✅ The correct answer is option D.
Iron has got __________ isotopes.
A. No
B. Four
C. Three
D. Two
✅ The correct answer is option B.
Lead pencil contains
A. Graphite
B. Lead sulphide
C. Lead
D. Both B & C
✅ The correct answer is option A.
Mho’s scale of hardness, which consists of 10 standard minerals is used for the measurement of __________ hardness.
A. Scratch
B. Indentation
C. Dynamic
D. Rebound
✅ The correct answer is option A.
Which of the following pairs regarding the effect of alloying elements in steels are not matched correctly?
A. Cobalt: It contributes to rerl hardness by hardening ferrite
B. Molybdenum: It forms abrasion resisting particles
C. Phosphorous: It improves machinability in free cutting steels
D. Silicon: It reduces oxidation resistance
✅ The correct answer is option A.
The routing function in a production system design is concerned with the
A. Material flow optimisation through the plant
B. Machine utilisation
C. Quality control of the product
D. Manpower utilisation
✅ The correct answer is option B.
Material having maximum density is
A. Plutonium
B. Osmium
C. Titanium
D. Uranium
✅ The correct answer is option B.
__________ test determines the yield strength, Young’s modulus of elasticity, percentage reduction in area & percentage elongation of a material.
A. Tensile
B. Fatigue
C. Impact
D. None of these
✅ The correct answer is option A.
__________ is used as a material of construction for the blade of power saw.
A. Wrought iron
B. Stainless steel
C. Mild steel
D. High speed steel
✅ The correct answer is option D.