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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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.

Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N2 in contaminated air at which it acts as a natural asphyxiate is ≥ _____________ percent?

A 84

B 88

C 80

D 92

Review Detailed Answer

Correct Answer: 84

Growth of ______________ is promoted by the presence of manganese in water?

A Files

B Algae

C Micro-organisms

D Mosquitoes

Review Detailed Answer

Correct Answer: Micro-organisms

The pH value of oxidised sewage is about_____________________?

A 1.8

B 6.2

C 7.3

D 13.4

Review Detailed Answer

Correct Answer: 7.3

Arsenic pollutant is not generated in _______________ industries?

A Tanneries

B Glass & ceramic

C Beverages

D Any of these

Review Detailed Answer

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

Review Detailed Answer

Correct Answer: Polishing

Main pollutant present in automobile exhaust is_________________?

A CO

B CO2

C NO

D Hydrocarbons

Review Detailed Answer

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

Review Detailed Answer

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

Review Detailed Answer

Correct Answer: 170

Presence of bacteria in potable (drinking) water causes_________________?

A Turbidity

B Disease

C Bad odour

D Bad taste & colour

Review Detailed Answer

Correct Answer: Disease

TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm?

A 0.1

B 25

C 100

D 1000

Review Detailed Answer

Correct Answer: 0.1

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N2 in contaminated air at which it acts as a natural asphyxiate is ≥ _____________ percent?

Growth of ______________ is promoted by the presence of manganese in water?

The pH value of oxidised sewage is about_____________________?

Arsenic pollutant is not generated in _______________ industries?

Pollution by particulate matter emission in the atmosphere does not take place during metal____________________?

Main pollutant present in automobile exhaust is_________________?

Scale formation in boiler is controlled by____________________?

Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?

Presence of bacteria in potable (drinking) water causes_________________?

TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm?