M C Q s D r i v e

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.

______________ is an indirectly heated furnace?
A Open hearth furnace
B Muffle furnace
C Soaking pit
D Reheating furnace
Correct Answer: Muffle furnace
Furnace pressure is normally controlled by regulating the__________________?
A Air pressure
B Fuel gas pressure
C Speed of I.D. fan
D Damper
Correct Answer: Damper
Pick out the wrong statement ?
A Addition of methane to the furnace atmosphere reduces decarburising by hydrogen
B Nitrogen in presence of steam decor-burises high carbon steel, whereas hydrocarbon gases
C Active nitrogen (formed by cracking ammonia at the metal surface) cause nitride formation
D None of these
Correct Answer: None of these
Ostwald charts are meant for__________________?
A Computing the excess/deficiency of combustion air
B Calculation of flue gas temperature
C Computation of flue gas analysis
D None of these
Correct Answer: Computing the excess/deficiency of combustion air
Which of the following furnaces will have maximum thermal efficiency ?
A Soaking pits
B Walking beam reheating furnace
C Boiler furnace
D Rotary kilns
Correct Answer: Boiler furnace
The function of an economiser in a boiler is to preheat the _____________________?
A Feedwater
B Combustion air
C Pulverised coal
D Furnace oil
Correct Answer: Feedwater
Which of the following is not an additive for flue gases from furnace to reduce its dewpoint ?
A Ammonia
B Fine dolomite
C Alkaline powders
D None of these
Correct Answer: None of these
Out of the following fuels used in a furnace exhausting flue gas at a temperature of 600°C, the percentage stack loss will be maximum in case of complete combustion of_________________?
A Furnace oil with air
B Furnace oil with oxygen
C Blast furnace gas with air
D Blast furnace gas with oxygen
Correct Answer: Blast furnace gas with air
Fuel economy in an industrial furnace operation cannot be achieved by the use of__________________?
A Stoichiometric combustion air
B Non-preheated combustion air
C Combustion air not enriched with oxygen
D Recuperators
Correct Answer: Stoichiometric combustion air
Which furnace employs preheating, heating and soaking zones ?
A Soaking pit
B Reheating furnace
C Open hearth furnace
D Cupola
Correct Answer: Reheating furnace