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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

A mercury thermometer cannot be used to measure the temperature below the freezing point of mercury, which is _____________ °C?
A -38.9
B -11.9
C -60.9
D -80.9
Correct Answer: -38.9
The second order system with the transfer function 4/(s2 + 2s + 4) has a damping ratio of ___________________?
A 2.0
B 0.5
C 1.0
D 4.0
Correct Answer: 0.5
The calibration data of a thermocouple with its cold junction at 0°C are given below. The hot junction of the thermocouple is placed in a bath at 80°C, while its cold junction is at 20°C. What is the emf of thermocouple ?
A 3.26 mv
B 0.80 mv
C 2.46 mv
D 2.43 mv
Correct Answer: 2.46 mv
Presence of a small amount of water in the organic systems can be determined by the _____________ method?
A Electrical conductivity
B Polarimetry
C Emission spectroscopy
D Dielectric constant end loss factor
Correct Answer: Dielectric constant end loss factor
Working principle of radiation pyrometer is based on the __________________?
A Wien’s law
B Kirchoff’s law
C Stefan Boltzmann law
D Seebeck effect
Correct Answer: Stefan Boltzmann law
Which of the following controllers has maximum offset ?
A P-controller
B P-I controller
C P-D controller
D P-I-D controller
Correct Answer: P-controller
Which of the following flow-metering instruments is an areameter ?
A Venturimeter
B Rotameter
C Pitot tube
D Hot wire anemometer
Correct Answer: Rotameter
A magnetic flowmeter is_________________?
A Based on the principle of Faraday’s law
B Capable of measuring the flow rate of slurries and electrolytes
C Based on the linear relationship between the fluid flow rate and the induced voltage
D All A., B. and C.
Correct Answer: All A., B. and C.
Which is the most suitable instrument for measuring pressure below 3 microns ?
A Mcleod gauge
B Alphatron
C Ionisation gauge
D Bourdon gauge
Correct Answer: Ionisation gauge
______________ is undesirable in thermocouples used in industries ?
A Linear relation of emf to temperature
B Corrosion resistance
C Oxidation resistance
D Non-linear relation of emf to temperature
Correct Answer: Non-linear relation of emf to temperature
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