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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.

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

Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan_________________?

A With greater number of blades

B Of increased diameter

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. & B.

Main pollutants released from iron & steel industry is__________________?

A CO, CO2 & SO2

B H2S, NO & SO3

C CO2, H2S & NO2

D SO3, NO2 & CO2

Review Detailed Answer

Correct Answer: CO, CO2 & SO2

The maximum CO2 is emitted into the atmosphere by_________________?

A Combustion

B Urea

C Biomass burning

D Trees

Review Detailed Answer

Correct Answer: Combustion

Color test of water is done with an instrument called__________________?

A Tintometer

B Colorimeter

C Electro-chemical cell

D Turbidimeter

Review Detailed Answer

Correct Answer: Tintometer

Water filtration rate in a slow sand filter ranges from ____________ litres/m2/hr?

A 10 to 20

B 100 to 200

C 1500 to 2500

D 4000 to 5000

Review Detailed Answer

Correct Answer: 100 to 200

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

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_________________?

Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan_________________?

Main pollutants released from iron & steel industry is__________________?

The maximum CO2 is emitted into the atmosphere by_________________?

Color test of water is done with an instrument called__________________?

Water filtration rate in a slow sand filter ranges from ____________ litres/m2/hr?