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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

Calorific value of coke even gas produced by low temperature carbonisation of coal is about ____________ Kcal/Nm3?
A 4000
B 2500
C 6500
D 10000
Correct Answer: 6500
Softening temperature of coal ash is a measure of the _____________ of coal?
A Caking tendency
B Coking tendency
C Clinkering tendency
D Size stability
Correct Answer: Clinkering tendency
A sample of natural gas containing 80% methane (CH4) and rest nitrogen (N2) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the remainder going to CO, the Orsat analysis in volume percent is_________________?
A CO2 : 6.26, CO : 1.56, O2 : 3.91, H2O :15.66, N2 : 72.60
B CO2 : 7.42, CO : 1.86, O2 : 4.64, N2:86.02
C CO2 : 6.39, CO : 1.60, O2 : 3.99, H2O:25.96, N2:72.06
D CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74
Correct Answer: CO2 : 7.42, CO : 1.86, O2 : 4.64, N2:86.02
Higher fuel combustion efficiency cannot be achieved by_________________?
A Preheating of fuel gases & combustion air
B Reducing sulphur content in the fuel
C Adopting proper fuel firing technique & fuel preparation
D Supplying correct amount of combustion air
Correct Answer: Reducing sulphur content in the fuel
Tolerable concentration of toxic carbon monoxide in atmospheric air is about ______________ ppm?
A 50
B 1000
C 5000
D 10000
Correct Answer: 50
Which of the following combustibles is absent in blast furnace gas ?
A H2
B CH4
C CO
D None of these
Correct Answer: CH4
A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that___________________?
A 21% excess air has been used for combustion
B 21% excess oxygen has been used for combustion
C Complete combustion of fuel has taken place
D No excess air has been used for combustion
Correct Answer: Complete combustion of fuel has taken place
Percentage of methane in coke oven gas may be around _____________________?
A 5
B 15
C 25
D 50
Correct Answer: 5
Gobar gas is produced by the _______________ of ‘gobar’ (cow dung) ?
A Hydrolysis
B Fermentation
C Oxidation
D Dehydration
Correct Answer: Fermentation
Atomising steam to fuel oil ratio in a burner should be around__________________?
A 0.5
B 1.5
C 2.5
D 3.5
Correct Answer: 0.5
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