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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

Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are________________?
A Air to open valve with the controller direct acting
B Air to close valve with the controller indirect acting
C Air to open valve with the controller indirect acting
D Air to close valve with the controller direct acting
Correct Answer: Air to open valve with the controller indirect acting
Thermal well made of _____________ gives the fastest speed of response, while measuring temperature by thermocouples?
A Steel
B Vycor (a glass)
C Nichrome
D Inconel
Correct Answer: Vycor (a glass)
With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer ?
A Increases
B Decreases
C Remain constant
D Increases exponentially
Correct Answer: Decreases
For measuring the temperature of a red hot furnace, which is the most suitable instrument ?
A Platinum resistance thermometer
B Thermocouple
C Optical pyrometer
D Bimetallic thermometer
Correct Answer: Optical pyrometer
Bourdon tube is never made of________________?
A Phosphor bronze
B Monel metal
C Stainless steel
D Cast iron
Correct Answer: Cast iron
Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a________________?
A Beckman thermometer
B Dilatometer
C Mercury thermometer
D Bimetallic thermometer
Correct Answer: Beckman thermometer
The pressure sensing element of elastic type pressure gauge is never made in the form of a_________________?
A Bellow
B Diaphragm
C Strip
D Bourdon tube
Correct Answer: Strip
Dome temperature of blast furnace stove is most accurately measured by a____________________?
A Radiation pyrometer
B platinum-platinum/rhodium thermocouple
C Iron-constantan thermocouple
D Platinum resistance thermometer
Correct Answer: platinum-platinum/rhodium thermocouple
The term analogous to voltage in a single tank system is the_______________?
A Heat content of the system
B Liquid volume in the tank
C Flow rate
D Level of liquid
Correct Answer: Level of liquid
A negative gain margin expressed in decibels means a/an ____________ system?
A Stable
B Unstable
C Critically damped
D None of these
Correct Answer: Unstable
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