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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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.

The time taken for a radioactive element to reduce to 50% of its original weight is _____________ years, if its half life period is 12 years?

A 24

B 18

C 6

D 36

Review Detailed Answer

Correct Answer: 18

The frequency at which maximum amplitude ratio is attained is called the ______________ frequency?

A Corner

B Resonant

C Cross-over

D Natural

Review Detailed Answer

Correct Answer: Resonant

Thermocouple is suitable for measuring_________________?

A Liquid temperatures only

B Very high temperatures only

C Very low temperatures only

D Both high and low temperatures

Review Detailed Answer

Correct Answer: Both high and low temperatures

For the time domain function f(t) = t, the Laplace transform of ∫0 t f(t) dt is given by___________________?

A 1/2 S3

B 2/S3

C 1/S3

D 2/S2

Review Detailed Answer

Correct Answer: 1/S3

Phase margin is equal to_______________?

A 180° – phase lag

B Phase lag – 180°

C Phase lag + 180°

D Phase lag + 90°

Review Detailed Answer

Correct Answer: 180° – phase lag

Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic ?

A CO2

B O2

C NO

D NO2

Review Detailed Answer

Correct Answer: CO2

A non-linear chemical system is exemplified by a/an_________________?

A Isothermal CSTR

B Mixer

C Non-isothermal CSTR

D None of these

Review Detailed Answer

Correct Answer: Non-isothermal CSTR

All the thermocouples used for temperature measurement use dissimilar metal ________________?

A Strips

B Bars

C Wires

D Beads

Review Detailed Answer

Correct Answer: Wires

Dead zone is the__________________?

A Same as time constant

B Same as transportation lag

C Maximum change in the variable that does not change the reading of the instrument

D None of these

Review Detailed Answer

Correct Answer: Maximum change in the variable that does not change the reading of the instrument

The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is________________?

A 5π/12

B π/6

C π/12

D π/3

Review Detailed Answer

Correct Answer: 5π/12

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The time taken for a radioactive element to reduce to 50% of its original weight is _____________ years, if its half life period is 12 years?

The frequency at which maximum amplitude ratio is attained is called the ______________ frequency?

Thermocouple is suitable for measuring_________________?

For the time domain function f(t) = t, the Laplace transform of ∫0 t f(t) dt is given by___________________?

Phase margin is equal to_______________?

Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic ?

A non-linear chemical system is exemplified by a/an_________________?

All the thermocouples used for temperature measurement use dissimilar metal ________________?

Dead zone is the__________________?

The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is________________?