Chemical Engineering MCQs

6108 MCQs  (Page 43 of 611)

Attempt Chemical Engineering Quiz
______________________ temperature remains constant during adiabatic saturation process of unsaturated air ?
A. Dew point
B. Dry bulb
C. Wet bulb
D. None of these
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Resilience of a bolt can be increased by increasing its __________________?
A. Length
B. Shank diameter
C. Head diameter
D. None of these
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Maximum permissible air velocity in pipelines is about ______________ metre/second ?
A. 5
B. 10
C. 20
D. 40
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Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA) ?
A. Styrofoam
B. Lucite
C. Perspex
D. Plexiglass
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Elimination of brittleness resulting from welding of saw blades is done by __________________ of the welded portion ?
A. Annealing
B. Toughening
C. Work hardening
D. Tempering
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In a neutral solution__________________?
A. H+ ions are absent
B. Oh- ions are absent
C. Both h+ and oh- ions are present in very small but equal concentration
D. None of these
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At 100% relative humidity, the dew point temperature of moist air is_________________?
A. Less than the wet bulb temperature
B. More than the wet bulb temperature
C. Equal to the wet bulb temperature
D. Equal to the ambient temperature
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____________________ of hard alloy and tool steel is done to make it easily machinable ?
A. Case carburising
B. Tempering
C. Normalising
D. Annealing
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In the Bayer’s process, bauxite is digested under pressure using ___________________?
A. H2so4
B. Naoh
C. Nh3
D. Hcl
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Closeness of packing is maximum in case of ____________________ crystal lattice?
A. Face centred
B. Simple cubic
C. Body centred
D. None of these
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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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