Chemical Engineering MCQs

6108 MCQs  (Page 49 of 611)

Attempt Chemical Engineering Quiz
The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the________________?
A. Fatigue strength
B. Creep strength
C. Resilience
D. Endurance limit
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In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is ?
A. Less
B. More
C. Equal
D. Unpredictable
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Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at________________?
A. High vacuum
B. Zero pressure
C. 0°k
D. Earth’s centre
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Which of the following is the largest quantum of pressure ?
A. 1 kg/cm2
B. 1 bar
C. 1 atmosphere
D. 1 kilo pascal
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Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an ______________ body?
A. Grey
B. Black
C. Opaque
D. White
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Super conduction in metals is observed at a temperature of ________________ °K?
A. <100
B. >100
C. About 273
D. About 373
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The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the ‘Curie temperature’. Its value for cobalt is ______________ °C?
A. 768
B. 1127
C. 1359
D. 1480
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The product out from a cupola is called ____________________?
A. Wrought iron
B. Pig iron
C. Cast iron
D. None of these
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In the blast furnace, incorporation of water vapour in the blast gives the following effect ?
A. Increases the reducing potential of the gas
B. Increases the flame temperature
C. No significant change occurs
D. Increases the hydrogen content in the metal
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With increase in impurities in metals, their corrosion resistances____________________?
A. Increase
B. Decrease
C. Remain same
D. May increase or decrease; depending on the type of metal
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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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