A. Normalising
B. Tempering
C. Annealing
D. None of these
✅ The correct answer is option B.
Chemical Engineering MCQs
High __________ of cast iron makes it suitable for use in machine beds.
A. Compressive strength
B. Endurance strength
C. Damping capacity
D. Tensile strength
✅ The correct answer is option A.
The instrument based on the following principle is used for the measurement of oxygen only in the flue gases.
A. Chemical absorption
B. Thermal conductivity
C. Infrared absorption
D. Paramagnetism
✅ The correct answer is option D.
The lightest non-inflammable gas is
A. H₂
B. He
C. Ar
D. O₂
✅ The correct answer is option B.
Which of the following metals occurs in nature in their free metallic state?
A. Au & Ag
B. Pb & Zn
C. Cu & Ni
D. None of these
✅ The correct answer is option D.
It is possible to form martensite
A. Sometimes by cold working
B. Sometimes without nucleation
C. Sometimes by gas quenching
D. Only in iron based alloys
✅ The correct answer is option D.
Which of the following has the highest value of refractive index?
A. Brine (sea water)
B. Diamond
C. Distilled water
D. Glass
✅ The correct answer is option B.
A __________ type pressure sensing element is commonly used in aneroid barometer.
A. Capsule
B. Bellow
C. Spiral tube
D. Flat diaphragm
✅ The correct answer is option A.
Which of the following materials has the poorest electrical conductivity?
A. Carbon
B. Aluminium
C. Silver
D. Stainless steel
✅ The correct answer is option A.
The escape velocity of a body on earth which is independent of its mass is about __________ km/second.
A. 3
B. 7
C. 11
D. 15
✅ The correct answer is option C.