A. Liquid iron
B. Solid iron
C. Sponge iron
D. Iron saturated with carbon
✅ The correct answer is option C.
Basic Chemical Engineering MCQs
Mechanism/phenomenon involved in the improvement of fatigue strength of a material by shot peening is the
A. Induction of residual compressive stress on the surface
B. Removal of stress concentration from the surface
C. Grain refinement
D. Surface polishing
✅ The correct answer is option A.
Toughness of a material is measured by the
A. Vicker’s hardness test
B. Scratch test
C. Universal testing machine
D. Notched bar test
✅ The correct answer is option C.
Which of the following hardness tests uses the depth of penetration caused by the indentor as the parameter for arriving at the hardness value of a material ?
A. Shore sceleroscope test
B. Vicker’s hardness test
C. Brinell hardness test
D. Rockwell hardness test
✅ The correct answer is option D.
Constituents of stellite are
A. Zinc, copper & nickel
B. Cobalt, chromium & tungsten
C. Zinc, aluminium & nickel
D. Nickel, cobalt & vanadium
✅ The correct answer is option B.
Eutectoid reaction for iron-carbon system occurs at a temperature of __________ °C.
A. 597
B. 959
C. 1147
D. 1493
✅ The correct answer is option D.
Baffles provided on the shell side of a shell and tube heat exchanger are meant for
A. Providing support for the tubes
B. Improving heat transfer
C. Both A & B
D. Preventing the fouling of tubes & stagnation of shell side fluid
✅ The correct answer is option C.
Which of the following manufacturing processes produces the strongest components ?
A. Forging
B. Cold rolling
C. Hot rolling
D. Die casting
✅ The correct answer is option A.
Co-efficient of performance of a Carnot cycle refrigerator operating between – 23°C and + 27°C is
A. 3
B. 5
C. 0.5
D. 1.5
✅ The correct answer is option B.
The most commonly used moderator in nuclear power plant is
A. Graphite
B. Light water
C. Heavy water
D. Berellium
✅ The correct answer is option A.