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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

Specific gravity of a petroleum product gives an indication of its _________________?
A Degree of refinement
B Hydrocarbon content type (aromatic or paraffinic)
C Ease of atomisation
D Sulphur content
Correct Answer: Hydrocarbon content type (aromatic or paraffinic)
Solvent used in duo-sol extraction for lube oil upgradation is a mixture of______________?
A Propane & phenol-cresol mixture
B Methyl ethyl ketone & glycol
C Phenol & furfural
D Propane & liquid sulphur dioxide
Correct Answer: Propane & phenol-cresol mixture
Name the endothermic reaction out of the following ?
A Catalytic cracking
B Hydrocracking
C Dehydrogeneration of Naphthene to produce aromatic
D Catalytic polymerisation
Correct Answer: Dehydrogeneration of Naphthene to produce aromatic
Operating temperature and pressure in catalytic reforming is about_____________?
A 1-5 Kgf/cm2 & 200°C
B 15-45 Kgf/cm2 & 450-550°C
C 50 – 75 kgf/cm2 & 600 – 800°C
D 5-10 kgf/cm2 & 150 – 250°C
Correct Answer: 15-45 Kgf/cm2 & 450-550°C
Which of the following has the lowest viscosity (at a given temperature) of all ?
A Naphtha
B Kerosene
C Diesel
D Lube oil
Correct Answer: Naphtha
Presence of sulphur in gasoline___________________?
A Leads to corrosion
B Increases lead susceptibility
C Decreases gum formation
D Helps during stabilisation
Correct Answer: Leads to corrosion
Higher viscosity of lubricating oil usually signifies_______________________?
A Lower Reid vapour pressure
B Higher acid number
C Higher flash point and fire point
D Lower flash point and fire point
Correct Answer: Higher flash point and fire point
Which of the following fractions of a crude oil will have the maximum gravity API (i.e. °API) ?
A Diesel
B Gasoline
C Atmospheric gas oil
D Vacuum gas oil
Correct Answer: Atmospheric gas oil
Smoke volatility index is equal to smoke point plus______________________?
A 0.42 × (% distilled at 204°C)
B 5 mm
C 0.84 × (% distilled at 204°C)
D 10 mm approximately
Correct Answer: 0.42 × (% distilled at 204°C)
Diesel index (an alternative index for expressing the quality of diesel) is_______________?
A Determined by using a test engine
B Not related to aniline point
C Equal to cetane number plus 3
D All A., B. & C.
Correct Answer: Equal to cetane number plus 3
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