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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.

A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA as shown below in the P-V diagram. The net work done during the complete cycle is given by the area covered by_________________?

A P1ACBP2P1

B ACBB1A1A

C ACBDA

D ADBB1A1A

Review Detailed Answer

Correct Answer: ACBDA

The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by_________________?

A Biological oxygen pond

B Aerated lagoons

C Trickling filters

D Gravity separator having oil skimming devices

Review Detailed Answer

Correct Answer: Gravity separator having oil skimming devices

Noise emitted by a ventilation fan at a distance of 3 metres is about _____________ decibels?

A 85

B 105

C 125

D 145

Review Detailed Answer

Correct Answer: 105

Presence of ____________ in water stream are deleterious to aquatic life?

A Soluble and toxic organics

B Suspended solids

C Heavy metals and cyanides

D All A., B. & C.

Review Detailed Answer

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

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

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA as shown below in the P-V diagram. The net work done during the complete cycle is given by the area covered by_________________?

The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by_________________?

Noise emitted by a ventilation fan at a distance of 3 metres is about _____________ decibels?

Presence of ____________ in water stream are deleterious to aquatic life?

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__________________?