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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

Degree to which an instrument indicates the changes in measured variable without dynamic error is called its ___________________?
A Speed of response
B Reproducibility
C Fidelity
D Static characteristics
Correct Answer: Fidelity
Temperature measurement by optical pyrometer is done above ____________ point, which is 1063°C ?
A Antimony
B Gold
C Silver
D Nickel
Correct Answer: Gold
Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere ?
A Platinum-platinum + rhodium
B Iron-constantan
C Copper-constantan
D Chromel-alumel
Correct Answer: Platinum-platinum + rhodium
In an exothermic chemical reactor, the manipulated variable is the flow rate of_______________?
A Coolant
B Reactants
C Product
D None of these
Correct Answer: Coolant
Range of hydrogen gas constant volume thermometer is _____________ °C?
A -10 to 20
B 0 to 100
C 100 – 500
D 400 – 1000
Correct Answer: 0 to 100
Pick out the one which is a first order instrument ?
A Mercury in glass thermometer (without any covering or air gap)
B Bare metallic thermometer
C Bare vapor pressure thermometer
D All A., B. and C.
Correct Answer: All A., B. and C.
Pick out the first order system from among the following ?
A Damped vibrator
B Mercury in glass thermometer kept in boiling water
C Interacting system of two tanks in series
D Non-interacting system of two tanks in series
Correct Answer: Mercury in glass thermometer kept in boiling water
Select the correct statement from the following?
A The frequency response of a pure capacity process is unbounded
B The phase lag of a pure time delay system decreases with increasing frequency
C The amplitude ratio of a pure capacity process is inversely proportional to frequency
D The amplitude ratio of a pure time delay system increases with frequency
Correct Answer: The amplitude ratio of a pure capacity process is inversely proportional to frequency
Pick out the wrong statement ?
A Proportional controller is normally used for level control in industrial applications
B CSTR can be considered as a distributed parameter system
C Distributed parameter approach gives partial differential equation
D Non-linear behaviour is exemplified by an on-off controller
Correct Answer: CSTR can be considered as a distributed parameter system
Pick out the wrong statement?
A There is no transfer lag for a single first order system
B Stirred tank with a water jacket exemplifies an interacting system
C Transfer lag is a characteristic of all higher order systems (other than first order systems)
D Transfer lag decreases as the number of stages decreases
Correct Answer: Transfer lag decreases as the number of stages decreases
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