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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.

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in____________________?

A Coagulation and flocculation of colloids

B Oxidation of carbonaceous matter to CO2

C Nitrification or oxidation of ammonia derived from breakdown of nitrogenous organic matter

D All A., B. and C.

Review Detailed Answer

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

TLV of mercury in potable (drinking) water is about ______________ ppm?

A 0.001

B 0.1

C 1

D 5

Review Detailed Answer

Correct Answer: 0.001

Presence of iron and manganese in water causes___________________?

A Reduction in its dissolved oxygen content

B Discoloration of bathroom fixtures

C Temporary hardness

D None of these

Review Detailed Answer

Correct Answer: Discoloration of bathroom fixtures

Presence of soluble organics in polluted water causes_________________?

A Undesirable plants growth

B Depletion of oxygen

C Fire hazards

D Explosion hazards

Review Detailed Answer

Correct Answer: Depletion of oxygen

Persons working in cement plants and limestone quarries are more prone to disease like__________________?

A Cancer

B Asthma

C Silicosis

D Fluorosis (bone disease)

Review Detailed Answer

Correct Answer: Silicosis

The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the __________________?

A Bacterial stability factor

B Relative stability

C Biological oxygen demand (BOD)

D Oxygen ion concentration

Review Detailed Answer

Correct Answer: Relative stability

In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C ?

A t = 15 – 0.0065h

B t = 15 + 0.0065h

C t = 0.0035h -15

D t = 15 – 0.0035h

Review Detailed Answer

Correct Answer: t = 15 – 0.0065h

Which of the following is the most severe air pollutant ?

A Hydrocarbons

B NOx

C SO2

D CO

Review Detailed Answer

Correct Answer: NOx

Dust collection efficiency of a cyclone separator depends upon its______________?

A Diameter

B Inlet gas velocity

C Overall height

D All A., B. & C.

Review Detailed Answer

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

The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is_________________?

A Pipe vibrations

B Cavitation

C Boundary layer separation

D Fluctuation in liquid flow

Review Detailed Answer

Correct Answer: Cavitation

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in____________________?

TLV of mercury in potable (drinking) water is about ______________ ppm?

Presence of iron and manganese in water causes___________________?

Presence of soluble organics in polluted water causes_________________?

Persons working in cement plants and limestone quarries are more prone to disease like__________________?

The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the __________________?

In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C ?

Which of the following is the most severe air pollutant ?

Dust collection efficiency of a cyclone separator depends upon its______________?

The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is_________________?