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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

Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called________________?
A Thermosphere
B Stratosphere
C Troposphere
D Mesosphere
Correct Answer: Stratosphere
Which of the following is the most detrimental for water used in high pressure boiler ?
A Silica
B Turbidity
C Phenol
D Dissolved oxygen
Correct Answer: Silica
Septic tanks are used for the ______________ of the deposited solids?
A Separation
B Anaerobic decomposition
C Aerobic decomposition
D None of these
Correct Answer: Anaerobic decomposition
Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly _____________ substances?
A Radioactive
B Organic
C Inorganic
D None of these
Correct Answer: Inorganic
Particulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called_________________?
A Fumes
B Mists
C Smoke
D Aerosols
Correct Answer: Aerosols
The type of bacteria which is active in trickling filter during biological treatment of sewage is the _____________ bacteria?
A Anaerobic
B Saprophytic
C Aerobic
D Parasitic
Correct Answer: Aerobic
Presence of _____________ hardness is responsible for the temporary hardness in water?
A Carbonate
B Calcium
C Chloride
D Sulphate
Correct Answer: Calcium
Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is__________________?
A Inversely proportional to viscosity of gas
B Proportional to the viscosity & density of the gas
C Proportional to the pressure of the gas
D Both B. and C.
Correct Answer: Both B. and C.
Limestone powder is injected during pulverised coal burning in boilers to ______________ the flue gases?
A Reduce SO2 content in
B Catalytically convert SO2 to SO3 in
C Increase the dew point of
D None of these
Correct Answer: Reduce SO2 content in
The main industrial source of emission of hydrogen sulphide air pollutant is________________?
A Petroleum refineries
B Coal based thermal power plants
C Pulp and paper plant
D Metallurgical roasting & smelting plant
Correct Answer: Coal based thermal power plants
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