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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

Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in ____________ in the electrical resistance of the wire ?
A No change
B Decrease
C Increase
D Exponential decrease
Correct Answer: Increase
Optical activity of a solution can be determined using a ___________________?
A Polarimeter
B Polarograph
C Dilatometer
D Refractometer
Correct Answer: Polarimeter
Which of the following thermocouples can measure the maximum temperature ?
A Platinum-rhodium
B Tungsten-molybdenum
C Chromel-alumel
D Iron-constantan
Correct Answer: Tungsten-molybdenum
Emf generated in a thermocouple depends on the temperature ___________________?
A Of cold junction only
B Of hot junction only
C Difference between hot and cold junctions
D Difference between cold junction and atmospheric temperature
Correct Answer: Difference between hot and cold junctions
Which of the following filled system expansion thermometer has the capability to measure the lowest temperature ?
A Mercury in glass thermometer
B Mercury in steel thermometer
C Alcohol in glass thermometer
D Fused metal (Na or K) in steel thermometer
Correct Answer: Alcohol in glass thermometer
Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change ?
A Water
B Mercury
C Methyl alcohol
D Carbon-tetrachloride
Correct Answer: Mercury
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a ________________?
A Magnetic flowmeter
B Pitot tube
C Flow nozzle type flowmeter
D Turbine flowmeter
Correct Answer: Magnetic flowmeter
pH meter has ____________________?
A One cell
B Two cells
C Three cells
D No cell
Correct Answer: Two cells
Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by _____________ effect?
A Peltier
B Thomson
C Seebeck
D None of these
Correct Answer: Peltier
Dilatometer is used to measure __________________?
A Stress
B Strain
C Deflection
D Contraction/expansion due to changes in temperature
Correct Answer: Contraction/expansion due to changes in temperature
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