Chemical Engineering MCQs

6108 MCQs  (Page 13 of 611)

Attempt Chemical Engineering Quiz
A reduction in thermal resistance during heat transfer does not occur in the___________________?
A. Convection heat transfer by stirring the fluid and cleaning the heating surface
B. Conduction heat transfer by reduction in the material thickness and increase in the thermal
C. Radiation heat transfer by increasing the temperature and reducing the emissivity
D. None of these
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Plastics as a material of construction suffer from the drawback of low_________________?
A. Machinability
B. Density
C. Strength
D. Plastic deformation
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The thickness of oxide film is y at time t. If K1, K2 and K3 are the temperature dependent constants, the parabolic law of oxidation is given by __________________?
A. Y2 = 2k1t + k2
B. Y = k1 ln (k2t + k3)
C. Y = k1 t + k2
D. Y = k1t3 + k2
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Biological shield in a nuclear reactor is generally provided to protect against the__________________?
A. Α-rays
B. Β-rays
C. Gamma rays & neutrons
D. Electrons
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The most detrimental impurity in high pressure boiler feed water is ___________________?
A. Suspended salt
B. Dissolved salt
C. Silica
D. Turbidity
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Sub zero treatment of steel is done to____________________?
A. Suppress martensite transformation
B. Enhance its working performance in sub zero atmosphere
C. Reduce the retained austenite in hardened steel
D. Induce temper brittleness after its hardening
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In Newton’s law of viscosity, which states that the shear stress is proportional to the _____________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient) ?
A. V2
B. 1/v2
C. 1/vg
D. Vg
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Which of the following is not categorised as the ore agglomeration process ?
A. Nodulising
B. Pelletising
C. Balling
D. Briquetting
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Tumbling is the process of improving the ________________ of the materials/parts ?
A. Surface finish
B. Fatigue limit
C. Creep limit
D. Surface cleanliness
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Young’s modulus of a material is the measure of its ___________________?
A. Stiffness
B. Malleability
C. Creep resistance
D. Tensile strength
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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