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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the_______________?
A Water alkalinity & leakage
B Hydrazine addition during feed water treatment
C Release of non-condensable gas from water in the boiler
D Scale formation
Correct Answer: Release of non-condensable gas from water in the boiler
______________ pipe is the most suitable for carrying sanitary drainage?
A Stainless steel
B Reinforced cement concrete
C Cast iron
D Asbestos cement
Correct Answer: Cast iron
Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode________________?
A Occurs higher in the electro-chemical series of metals
B Is exemplified by magnesium plate
C Is much cheaper than the cathodic base material to be guarded against corrosion
D All A, B. & C.
Correct Answer: All A, B. & C.
Electrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to___________________?
A Achieve very high purity of aluminium (99.9%)
B Keep the electrolyte in liquid condition by the generation of heat
C Electrolytically dissociate alumina
D Both B. & C.
Correct Answer: Both B. & C.
Holes for riveting purposes should be preferably made by________________?
A Cutting torch
B Drilling
C Punching
D None of these
Correct Answer: Drilling
Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?
A 9,100
B 13,000
C 7,000
D 2,550
Correct Answer: 9,100
Triple point of water is__________________?
A 0.01 °C
B 492°R
C 0°K
D -273°C
Correct Answer: 0.01 °C
Ganister contains maximum percentage of_________________?
A FeO
B SiO2
C MgO
D MnO2
Correct Answer: SiO2
Energy to be supplied to the radioactive nucleus for the emission of a neutron is ________________ MeV?
A 0.8
B 7.8
C 200
D 10000
Correct Answer: 0.8
Euler number is defined as the ratio of inertia force to _______________ force?
A Pressure
B Elastic
C Gravity
D Viscous
Correct Answer: Pressure
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