A. Wood’s metal
B. Babbit metal
C. Monel metal
D. Duralumin
✅ The correct answer is option A.
Basic Chemical Engineering MCQs
Free oxygen is removed from boiler feed water, because it
A. Reduces heat transfer co-efficient
B. Is corrosive
C. Causes explosion
D. None of these
✅ The correct answer is option B.
A fluid is termed as the Newtonion fluid, when the shear stress is __________ the velocity gradient.
A. Independent of
B. Inversely proportional to
C. Directly proportional to
D. None of these
✅ The correct answer is option C.
The following is a typical anionic collector used in flotation.
A. Ethyl dixanthogen
B. Trimethyl cetyl ammonium bromide
C. Potassium ethyl xanthate
D. LAuryl amine hydrochloride
✅ The correct answer is option C.
The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?
A. Cyaniding
B. Sheardising
C. Spherodising
D. None of these
✅ The correct answer is option A.
The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air.
A. Ambient
B. Dry bulb
C. Dew point
D. Wet bulb
✅ The correct answer is option C.
The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be
A. 0.8
B. 1
C. 1.4
D. 1.8
✅ The correct answer is option C.
Brazing is the joining of metals
A. Without melting the base metal
B. With a non-ferrous filler
C. Both A & B
D. Neither A nor B
✅ The correct answer is option C.
The hardenability of steel decreases with
A. Decrease in dislocation density
B. Increase in solutionising temperature
C. Increase in strength
D. Decrease in grain size
✅ The correct answer is option D.
__________ forces do not act in case of fluids.
A. Vibratory
B. Centrifugal
C. Elastic
D. Tensile
✅ The correct answer is option D.