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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

Olefins are_________________?
A Saturated hydrocarbons
B Unsaturated cyclic compounds (hydrocarbons)
C Present in substantially good quantity in crude petroleum
D None of these
Correct Answer: None of these
Octane number of gasoline produced by two stage fluidised catalytic cracking process is___________________?
A 80
B 87
C 92
D 97
Correct Answer: 97
Feedstock for polymerisation is__________________?
A Naphtha
B Cracked gases rich in C2 & C4 olefins
C Low boiling aromatics
D None of these
Correct Answer: Cracked gases rich in C2 & C4 olefins
Which of the following is an additive used for improving the cetane number of diesel ?
A Tetraethyl lead
B Tetramethyllead
C Ethyl nitrate or acetone
D None of these
Correct Answer: Tetraethyl lead
Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil__________________?
A Gives higher yield of petrol
B Lower octane number of petrol
C Higher sulphur content in the product
D Higher gum forming material in petrol
Correct Answer: Gives higher yield of petrol
Which of the following is the most widely used cracking process in oil refineries ?
A Dubbs process
B T.C.C. moving bed process
C Fluidised bed catalytic cracking process
D Houdry’s fixed bed process
Correct Answer: Fluidised bed catalytic cracking process
Presence of aromatics in __________________?
A Diesel increases its cetane number
B Kerosene increases its smoke point
C Petrol increases its octane number
D All A., B. and C.
Correct Answer: Petrol increases its octane number
The main aim of cracking is to produce ____________________?
A Gasoline
B Lube oil
C Petrolatum
D Coke
Correct Answer: Gasoline
Dearomatization of kerosene (by liquid sulphur dioxide extraction) is done to________________?
A Increase its smoke point
B Improve its oxidation stability
C Decrease the breathing loss
D None of these
Correct Answer: Improve its oxidation stability
Visbreaking__________________?
A Uses natural gas as feed
B Is carried out at atmospheric pressure
C Produces fuel oil of lower viscosity
D Produces gasoline only
Correct Answer: Produces fuel oil of lower viscosity
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