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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.

Tolerable limit of nitrogen oxides in air is _____________ ppm?

A 0.1

B 1

C 5

D 25

Review Detailed Answer

Correct Answer: 5

BOD of raw municipal sewage may be in the range of about _____________ mg/litre?

A 1-2

B 5-10

C 150-300

D 2000-3000

Review Detailed Answer

Correct Answer: 150-300

Iron & manganese present in the polluted water is removed by __________________?

A Simple filtration

B Oxidation followed by settling & filtration

C Chemical coagulation

D Chlorination only

Review Detailed Answer

Correct Answer: Oxidation followed by settling & filtration

TLV of aldrin in public water supply system is about ____________ μg/litre?

A 0.5

B 17

C 357

D 1097

Review Detailed Answer

Correct Answer: 17

Aerobic biological oxidation ponds used for the purification of polluted water__________________?

A Destroys/removes pathogen from the sewage

B Is not very effective for non-biodegradable substances (e.g. ABS) containing effluents

C Destroys/removes pathogen much more effectively if the sewage is chlorinated

D All A., B. & C.

Review Detailed Answer

Correct Answer: All A., B. & C.

Presence of excess fluorine in water causes__________________?

A Dental cavity

B Tooth decay

C Fluorosis

D Respiratory disease

Review Detailed Answer

Correct Answer: Fluorosis

Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as________________?

A Photochemical smog

B Peroxyacetyl nitrate (PAN) or methyl nitrite

C Benzopyrene

D Polyacrylonitrile

Review Detailed Answer

Correct Answer: Peroxyacetyl nitrate (PAN) or methyl nitrite

Dissolved oxygen content in river water is around _____________ ppm?

A 5

B 100

C 250

D 500

Review Detailed Answer

Correct Answer: 5

Maximum allowable concentration of CO2 in air for safe working is _____________ ppm (parts per million)?

A 50

B 1000

C 2000

D 5000

Review Detailed Answer

Correct Answer: 50

____________ substances present in sewage are removed in grit chamber during sewage treatment?

A Organic

B Fatty

C Inorganic

D Dissolved

Review Detailed Answer

Correct Answer: Inorganic

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Tolerable limit of nitrogen oxides in air is _____________ ppm?

BOD of raw municipal sewage may be in the range of about _____________ mg/litre?

Iron & manganese present in the polluted water is removed by __________________?

TLV of aldrin in public water supply system is about ____________ μg/litre?

Aerobic biological oxidation ponds used for the purification of polluted water__________________?

Presence of excess fluorine in water causes__________________?

Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as________________?

Dissolved oxygen content in river water is around _____________ ppm?

Maximum allowable concentration of CO2 in air for safe working is _____________ ppm (parts per million)?

____________ substances present in sewage are removed in grit chamber during sewage treatment?