Category: Chemical Engineering

Latest multiple choice questions with answers for chemical engineering students.

Chemical Engineering MCQs [Quiz 32]

Q1. Sudden fall of atmospheric pressure by a large amount is an indication of the
(A) Rain
(B) Cold wave
(C) Storm
(D) Fair weather

Q2. Angular displacement can be measured suitably by a
(A) Shaft encoder
(B) Linear variable differential transducer (LVDT)
(C) Stroboscope
(D) Tachometer

Q3. __________ of grey cast iron produces white cast iron.
(A) Tempering
(B) Rapid heating
(C) Rapid cooling
(D) Slow cooling

Q4. Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as
(A) Gr0.25 , Gr
(B) Gr0.25 , Gr0.33
(C) Gr, Gr0.25
(D) Gr0.33 , Gr0.25

Q5. Stainless steel is welded with difficulty because of
(A) Its high melting temperature
(B) Chances of cracking
(C) Oxide film formation
(D) Chromium carbide formation

Q6. Titanium is added to molten aluminium alloys before casting for the purpose of
(A) Grain refinement
(B) Increasing corrosion resistance
(C) Reducing porosity
(D) Improving fluidity

Q7. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
(A) Hard
(B) Soft
(C) Silicon carbide
(D) Aluminium oxide

Q8. Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxy-acetylene welding is __________ Nm3
(A) 0.5
(B) 1
(C) 1/3
(D) 2.5

Q9. What is the value of entropy at 273°K?
(A) 0
(B) 1
(C) ∞
(D) None of these

Q10. A high pressure boiler generates steam at a pressure greater than __________ kg/cm2
(A) 10
(B) 30
(C) 50
(D) 80

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