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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.

Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop?

A Tank 1

B Tank 2

C Tank 3

D Tank 4

Review Detailed Answer

Correct Answer: Tank 3

A first order system with unity gain and time constant η is subjected to a sinusoidal input of frequency w = 1/η. The amplitude ratio for this system is______________?

A 1

B 0.5

C 1/√2

D 0.25

Review Detailed Answer

Correct Answer: 1

Silver point temperature is ______________ °C?

A 760.5

B 860.5

C 960.5

D 1060.5

Review Detailed Answer

Correct Answer: 960.5

What is the Laplace transform of sin t ?

A 1/(s2 + 1)

B s/(1 + s2)

C 1/(s2 – 1)

D s/(s2 – 1)

Review Detailed Answer

Correct Answer: 1/(s2 + 1)

Thermistors which have a very high temperature co-efficient of resistivity belong to the class of solid called________________?

A Dielectrics

B Insulators

C Semi conductors

D Conductors

Review Detailed Answer

Correct Answer: Semi conductors

Gain margin is equal to the_________________?

A Amplitude ratio

B Reciprocal of amplitude ratio

C Gain in P controller

D Gain in P-I controller

Review Detailed Answer

Correct Answer: Reciprocal of amplitude ratio

Which of the following shows maximum dip effect (indicating reverse direction of temperature change) ?

A Mercury thermometer

B Radiation pyrometer

C Bimetallic thermometer

D Thermocouple

Review Detailed Answer

Correct Answer: Mercury thermometer

Composition of natural gas is determined by the_________________?

A Haldane apparatus

B Mass spectrometer

C Chromatograph

D Both B. and C.

Review Detailed Answer

Correct Answer: Both B. and C.

Photoelectric pyrometers are suitable in the temperature range of ________________ °C?

A 400-1600

B 800-1600

C 800-2500

D 400-1000

Review Detailed Answer

Correct Answer: 800-1600

Flame photometry is used for the determination of compositional analysis of_______________?

A Solids

B Alkali metals

C Natural gas

D Isotopes

Review Detailed Answer

Correct Answer: Alkali metals

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

A first order system with unity gain and time constant η is subjected to a sinusoidal input of frequency w = 1/η. The amplitude ratio for this system is______________?

Silver point temperature is ______________ °C?

What is the Laplace transform of sin t ?

Thermistors which have a very high temperature co-efficient of resistivity belong to the class of solid called________________?

Gain margin is equal to the_________________?

Which of the following shows maximum dip effect (indicating reverse direction of temperature change) ?

Composition of natural gas is determined by the_________________?

Photoelectric pyrometers are suitable in the temperature range of ________________ °C?

Flame photometry is used for the determination of compositional analysis of_______________?