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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

Choose the correct statement ?
A Octane number of i-octane is zero
B Octane number of paraffins increases with increasing number of carbon atoms
C Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms
D The aromatics have lower octane number than naphthenes with same number of carbon atoms
Correct Answer: Octane number of i-octane is zero
Choose the correct statement?
A Coking tendency increases with increasing molecular weight
B Coking tendency decreases with increasing molecular weight
C Higher pressure enhances coke formation
D Coking is an exothermic reaction
Correct Answer: Coking tendency increases with increasing molecular weight
Pick out the correct statement?
A Paraffins have higher octane number than corresponding iso-paraffin
B Paraffins have lower smoke point than aromatics
C Suitability of kerosene as a fuel & as an illuminant may be determined by char value test
D Aviation fuel should have very high cloud point
Correct Answer: Paraffins have lower smoke point than aromatics
Pick out the wrong statement?
A Multigrade lubricating oils have high viscosity index
B Paraffinic oil has very high viscosity index
C Naphthenic oil has very low viscosity index
D High viscosity index means a large change in viscosity with change in temperature
Correct Answer: High viscosity index means a large change in viscosity with change in temperature
Waxy crudes are treated with chemical additives mainly to_________________________?
A Depress its pour point
B Dissolve wax
C Precipitate wax
D Remove wax
Correct Answer: Depress its pour point
Maximum use of petroleum coke is in__________________?
A Adsorption refining operation
B Fuel gas manufacture
C Carbon electrode manufacture
D Iron ore reduction
Correct Answer: Carbon electrode manufacture
Crude oil is pumped by a _______________ pump?
A Gear
B Centrifugal
C Screw
D Reciprocating
Correct Answer: Centrifugal
Catalyst used in the isomerisation is_______________________?
A Aluminium chloride
B Alumina
C Nickel
D Phosphoric acid
Correct Answer: Aluminium chloride
Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency ?
A Paraffins
B Naphthenes
C Aromatics
D Iso-paraffins
Correct Answer: Paraffins
_____________ determination is not a very significant and important test for gasoline?
A Gum & sulphur content
B Viscosity
C Octane number
D Reid vapor pressure
Correct Answer: Viscosity
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