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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.

Fluorosis (a bone disease) is caused by the presence of high concentration of ____________ in atmospheric air?

A Hydrocarbons

B Hydrogen fluoride

C Hydrogen sulphides

D Nitrogen dioxide

Review Detailed Answer

Correct Answer: Hydrogen fluoride

Death may occur, when SO2 concentration in atmospheric air exceeds ______________ ppm?

A 20

B 100

C 400

D 200

Review Detailed Answer

Correct Answer: 400

Sound produced by an automobile horn heard at a distance of 1.5 metres corresponds to about ______________ decibels?

A 90

B 120

C 150

D 180

Review Detailed Answer

Correct Answer: 120

Most of the atmospheric air pollutants are present in large quantity in__________________?

A Stratosphere

B Thermosphere

C Troposphere

D Mesosphere

Review Detailed Answer

Correct Answer: Troposphere

____________ is removed from water by lime-soda process?

A Foul smell and taste

B Iron and manganese

C Temporary hardness

D Permanent hardness

Review Detailed Answer

Correct Answer: Temporary hardness

Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called________________?

A Thermosphere

B Stratosphere

C Troposphere

D Mesosphere

Review Detailed Answer

Correct Answer: Stratosphere

Which of the following is the most detrimental for water used in high pressure boiler ?

A Silica

B Turbidity

C Phenol

D Dissolved oxygen

Review Detailed Answer

Correct Answer: Silica

Septic tanks are used for the ______________ of the deposited solids?

A Separation

B Anaerobic decomposition

C Aerobic decomposition

D None of these

Review Detailed Answer

Correct Answer: Anaerobic decomposition

Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly _____________ substances?

A Radioactive

B Organic

C Inorganic

D None of these

Review Detailed Answer

Correct Answer: Inorganic

Particulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called_________________?

A Fumes

B Mists

C Smoke

D Aerosols

Review Detailed Answer

Correct Answer: Aerosols

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Fluorosis (a bone disease) is caused by the presence of high concentration of ____________ in atmospheric air?

Death may occur, when SO2 concentration in atmospheric air exceeds ______________ ppm?

Sound produced by an automobile horn heard at a distance of 1.5 metres corresponds to about ______________ decibels?

Most of the atmospheric air pollutants are present in large quantity in__________________?

____________ is removed from water by lime-soda process?

Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called________________?

Which of the following is the most detrimental for water used in high pressure boiler ?

Septic tanks are used for the ______________ of the deposited solids?

Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly _____________ substances?

Particulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called_________________?