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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

In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C ?
A t = 15 – 0.0065h
B t = 15 + 0.0065h
C t = 0.0035h -15
D t = 15 – 0.0035h
Correct Answer: t = 15 – 0.0065h
Which of the following is the most severe air pollutant ?
A Hydrocarbons
B NOx
C SO2
D CO
Correct Answer: NOx
Dust collection efficiency of a cyclone separator depends upon its______________?
A Diameter
B Inlet gas velocity
C Overall height
D All A., B. & C.
Correct Answer: All A., B. & C.
The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is_________________?
A Pipe vibrations
B Cavitation
C Boundary layer separation
D Fluctuation in liquid flow
Correct Answer: Cavitation
Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan_________________?
A With greater number of blades
B Of increased diameter
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
Main pollutants released from iron & steel industry is__________________?
A CO, CO2 & SO2
B H2S, NO & SO3
C CO2, H2S & NO2
D SO3, NO2 & CO2
Correct Answer: CO, CO2 & SO2
A shallow pond in which the sewage is retained and biologically treated is called__________________?
A Oxidation
B Imhoff tank
C Lagoon
D Skimming tank
Correct Answer: Oxidation
Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by__________________?
A Biological oxygen pond
B Radial settling tank (thickener) using coagulant (lime & ferrous sulphate)
C Lagoons
D Filtration
Correct Answer: Radial settling tank (thickener) using coagulant (lime & ferrous sulphate)
Inhalation of silica dust causes a disease called__________________?
A Bronchitis
B Silicosis
C Pneumoconiosis
D None of these
Correct Answer: Silicosis
Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called__________________?
A Grit
B Dust
C Powder
D Smoke
Correct Answer: Grit
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