Category: Chemical Engineering

Latest multiple choice questions with answers for chemical engineering students.

Chemical Engineering MCQs [Quiz 33]

Q1. Vernier calipers cannot be used to measure the
(A) I.D. & O.D. of the shaft
(B) Thickness of parts
(C) Depth of holes
(D) Clearance between two mating surfaces

Q2. The best lubricants for a machine working at high temperature & load is
(A) Grease
(B) Solid lubricant
(C) Animal oils
(D) Mineral oils

Q3. Powder metallurgy process does not make metal powder by
(A) Atomisation
(B) Grinding/milling
(C) Hammering
(D) Electrolytic deposition

Q4. Ammonia leakage in the refrigeration system is detected by
(A) Sulphur stick, which on detection gives white smoke
(B) Using chemical reagents
(C) Its smell
(D) Soap solution

Q5. Wrought iron is not
(A) Ductile & resistant to corrosion/rusting
(B) Weldable easily
(C) Having uniform strength in all directions
(D) Having maximum tensile strength along the lines of slag distribution

Q6. Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?
(A) Emissivity of pipe surface
(B) Diameter & length of the pipe
(C) Temperature of hot pipe surface & that of air in the room
(D) None of these

Q7. Cast iron contains __________ percent carbon.
(A) 2.5
(B) 3.75
(C) 4.75
(D) 5.25

Q8. Blast furnace slag is mainly molten
(A) Sand
(B) Magnesium silicate
(C) Calcium silicate
(D) Iron pyrite

Q9. Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of
(A) Grashoff number
(B) Grashoff number & Reynolds number
(C) Reynolds number
(D) Grashoff number & Prandtl number

Q10. Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the __________ temperature of air.
(A) Wet bulb
(B) Dry bulb
(C) Saturation
(D) Dew point

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