Chemical Engineering MCQs

6108 MCQs  (Page 37 of 611)

Attempt Chemical Engineering Quiz
Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when_________________?
A. Strain rate is increased
B. Grain size is increased
C. Prior cold deformation is increased
D. Not affected by any of the above parameters
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Corrosion of metals cannot be prevented by its__________________?
A. Tempering
B. Chromising
C. Aluminising
D. Alloying
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Absolute zero pressure can be attained at a temperature of___________________?
A. 0°c
B. 50°k
C. 0°r
D. None of these
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Recrystallisation temperature of steel is ______________________ °C?
A. 50
B. 300
C. 500
D. 800
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Which of the following does not have a sharp melting point ?
A. Thoria
B. Glass
C. Ice
D. Pig iron
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The usual energy consumption in electric arc furnace steel making is _____________ KWh/ton of steel ?
A. 60 – 100
B. 400 – 700
C. 1200 -1500
D. 2000 – 2300
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On being hit with a hammer, ___________________ will readily fracture?
A. Brass
B. Mild steel
C. Cast iron
D. Lead
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Nuclear fission of one atom of uranium-235 produces the energy equivalent to about ____________ MeV?
A. 20
B. 200
C. 500
D. 2000
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One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m-1. k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is____________________?
A. 100
B. 900
C. 9000
D. 10000
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Fibre glass is a composite material of_________________?
A. Glass fibre in a polymer matrix
B. Glass fibre in a metallic matrix
C. Polymer fibre in a glassy matrix
D. Both ‘b’ & ‘c’
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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