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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

Gasoline yield in catalytic reforming of naphtha may be about _________________ percent by weight?
A 85
B 65
C 50
D 98
Correct Answer: 85
The terminology used for the bottom most product from the vacuum crude distillation unit is______________?
A Residual crude
B Residuum
C Reduced crude
D Petrolatum
Correct Answer: Residuum
Waxes present in petroleum products_________________?
A Can be separated out by distillation
B Are not soluble in them
C Crystallise out at low temperature
D Decrease their viscosity
Correct Answer: Crystallise out at low temperature
Pyrolysis of kerosene or natural gasoline is done to produce mainly the___________________?
A Olefins and aromatics
B Lighter paraffins
C Stabilised gasoline
D Diesel
Correct Answer: Olefins and aromatics
Which of the following is the most important property for a jet fuel ?
A Cloud point
B Pour point
C Colour
D Freezing point
Correct Answer: Freezing point
Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm2 is maintained during cracking mainly to__________________?
A Increase the yield of light distillates
B Suppress coke formation
C Enhance the octane number of gasoline
D Reduce gum content in gasoline
Correct Answer: Suppress coke formation
Crude oil is transported inland from oil field to refineries, mainly by the _____________________?
A Road tankers
B Rail tankers
C Underground pipelines
D None of these
Correct Answer: Underground pipelines
Flash point of atmospheric distillation residue is determined by ______________ apparatus?
A Pensky-Martens (closed cup type)
B Abel
C Cleveland (open cup type)
D None of these
Correct Answer: Cleveland (open cup type)
Diesel used in naval applications has a minimum cetane number of ___________________?
A 25
B 35
C 45
D 65
Correct Answer: 45
The proper arrangement of the petroleum fractions in order of their boiling points is __________________ ?
A Lubricating oil > diesel > petrol > LPG
B Lubricating oil > petrol > diesel > LPG
C Petrol > lubricating oil > diesel > LPG
D Petrol > diesel > LPG > lubricating oil
Correct Answer: Lubricating oil > diesel > petrol > LPG
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