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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

The rate equation for the reaction represented by as shown in the bellow figure, is given by – rx = K1 . Cx/(1 + K2 Cx). At high value of Cx (i.e.., K2Cx > > 1), the order of the reaction and the rate constant are respectively___________________?
A Zero order & K1/K2
B Zero order & K1
C First order & K1
D First order & K1/K2
Correct Answer: Zero order & K1/K2
What is the dispersion number for a plug flow reactor ?
A 0
B ∞
C 1
D -1
Correct Answer: 0
Transition state theory gives the rate constant as__________________?
A K α e-E/RT
B K α eE/RT
C K α T . e-E/RT
D K α √T . e-E/RT
Correct Answer: K α T . e-E/RT
In case of a/an ______________ chemical reaction, conversion increases with the rise in temperature?
A Reversible exothermic
B Irreversible exothermic
C Irreversible endothermic
D Reversible endothermic
Correct Answer: Reversible endothermic
The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called_________________?
A A ferment or an enzyme
B Haemoglobin
C Fungi
D None of these
Correct Answer: Fungi
From collision theory, the reaction rate constant is proportional to_________________?
A exp (-E/RT)
B exp (-E/2RT)
C √T
D Tm exp (-E/RT)
Correct Answer: exp (-E/RT)
The unit of frequency factor in Arrhenius equation is_______________?
A Same as that of rate constant
B Same as that of activation energy
C Dimensionless
D None of these
Correct Answer: Same as that of rate constant
The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called_________________?
A Operational yield
B Relative yield
C Selectivity
D None of these
Correct Answer: Selectivity
Space time equals the mean residence time__________________?
A When the density of the reaction mixture is constant
B For large diameter tubular reactor
C For narrow diameter tubular reactor
D For CSTR
Correct Answer: When the density of the reaction mixture is constant
Chemical reaction rate of a component depends upon the______________________?
A Composition of the component only
B Temperature of the system
C Pressure of the system
D All A., B. and C.
Correct Answer: All A., B. and C.
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