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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

There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?
A Mercury
B Arsenic
C Aluminium
D Lead
Correct Answer: Aluminium
Which of the following is the most lethal water pollutant ?
A Phenol and cyanide
B Chlorine
C Alkalis
D Suspended solids
Correct Answer: Phenol and cyanide
In large thermal power stations very fine particulates present in flue gas are removed by___________________?
A Wet scrubber
B Bag filter
C Electrostatic precipitators
D Dust catcher
Correct Answer: Electrostatic precipitators
Presence of _____________ bacteria in water causes disease like typhoid?
A Aerobic
B Pathogenic
C Anaerobic
D Non-pathogenic
Correct Answer: Pathogenic
As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is _____________ μg/m3.(μg-microgram)?
A 10
B 90
C 800
D 750
Correct Answer: 90
Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about ______________ ppm (parts per million)?
A 0.002
B 0.2
C 1.2
D 4.8
Correct Answer: 0.2
Out of the following, TLV of _______________ is maximum (about 500 ppm)?
A Carbon dioxide
B Toluene
C Carbon disulphide
D Acetaldehyde
Correct Answer: Carbon dioxide
Fine grit present in sewage is removed in the _____________ during sewage treatment?
A Grit chamber
B Detritus tank
C Trickling filter
D Skimming tank
Correct Answer: Detritus tank
Corrosion in boilers can be prevented by _________________?
A Deaeration of feed water
B Enhancing pH of feed water by adding alkali
C Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen
D All A., B. and C.
Correct Answer: All A., B. and C.
Sulphur dioxide present in the industrial chimney exhaust gases causes____________________?
A Respiratory & lung disease
B Reduction in plant’s productivity owing to acid rain
C Corrosion of building materials
D All A., B. and C.
Correct Answer: All A., B. and C.
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