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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

Growth of ______________ is promoted by the presence of manganese in water?
A Files
B Algae
C Micro-organisms
D Mosquitoes
Correct Answer: Micro-organisms
The pH value of oxidised sewage is about_____________________?
A 1.8
B 6.2
C 7.3
D 13.4
Correct Answer: 7.3
Arsenic pollutant is not generated in _______________ industries?
A Tanneries
B Glass & ceramic
C Beverages
D Any of these
Correct Answer: Beverages
Pollution by particulate matter emission in the atmosphere does not take place during metal____________________?
A Grinding
B Machining
C Cutting
D Polishing
Correct Answer: Polishing
Main pollutant present in automobile exhaust is_________________?
A CO
B CO2
C NO
D Hydrocarbons
Correct Answer: CO
Scale formation in boiler is controlled by____________________?
A Preheating of feed water
B Reduction in hardness, silica & alumina in feed water
C Keeping the pH value of feed water just below 7
D Eliminating H2S in feed water
Correct Answer: Reduction in hardness, silica & alumina in feed water
Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?
A 120
B 140
C 170
D 200
Correct Answer: 170
Presence of bacteria in potable (drinking) water causes_________________?
A Turbidity
B Disease
C Bad odour
D Bad taste & colour
Correct Answer: Disease
TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm?
A 0.1
B 25
C 100
D 1000
Correct Answer: 0.1
Radioactive substances present in the polluted water stream can be removed by_________________?
A Biological oxygen treatment
B Coagulation and filtration
C Adsorption in ion exchange materials
D None of these
Correct Answer: Adsorption in ion exchange materials
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