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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.

Main constituent of natural gas is ________________?

A CH4 (upto 90%)

B C2H6

C C3H8

D H2

Review Detailed Answer

Correct Answer: CH4 (upto 90%)

Froth floatation is used for_________________?

A Washing fine coal dust (< 0.5 mm size)

B Washing lump coal (> 80 mm size)

C Removing ash from the coal based on difference in specific gravity of coal and ash

D All A., B. and C.

Review Detailed Answer

Correct Answer: Washing fine coal dust (< 0.5 mm size)

Anthracite can be used for___________________?

A Recarbonising steel

B Making carbon electrodes

C Blending with highly coking coal to check its swelling which helps in saving coke even walls

D All A., B. and C.

Review Detailed Answer

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

Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about _______________ percent?

A 5

B 25

C 55

D 75

Review Detailed Answer

Correct Answer: 5

Which of the following accounts for maximum energy loss in a boiler ?

A Flue gases

B Ash content in the fuel

C Incomplete combustion

D Unburnt carbon in flue gases

Review Detailed Answer

Correct Answer: Flue gases

Naphthalene is used for making_________________?

A Insecticides (e.g. moth balls)

B Unsaturated polyesters

C Drug intermediates e.g. β-naphthol

D All A., B. and C.

Review Detailed Answer

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

Dry air requirement for burning 1 Nm3 of CO to CO2 may be around _______________ Nm3 ?

A 2.4

B 1.75

C 0.87

D 11.4

Review Detailed Answer

Correct Answer: 2.4

In flue gas analysis by Orsat’s apparatus, oxygen is absorbed by____________________?

A Potassium hydroxide

B Cuprous chloride

C Alkaline pyrogallol solution

D None of these

Review Detailed Answer

Correct Answer: Alkaline pyrogallol solution

Blast furnace coke is made from coal by_____________________?

A Low temperature carbonisation

B High temperature carbonisation

C Medium temperature carbonisation

D Heating the coal in an oven in presence of air

Review Detailed Answer

Correct Answer: High temperature carbonisation

For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will_____________________?

A Increase

B Decrease

C Increase or decrease depending on the fuel type

D Not change

Review Detailed Answer

Correct Answer: Decrease

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Main constituent of natural gas is ________________?

Froth floatation is used for_________________?

Anthracite can be used for___________________?

Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about _______________ percent?

Which of the following accounts for maximum energy loss in a boiler ?

Naphthalene is used for making_________________?

Dry air requirement for burning 1 Nm3 of CO to CO2 may be around _______________ Nm3 ?

In flue gas analysis by Orsat’s apparatus, oxygen is absorbed by____________________?

Blast furnace coke is made from coal by_____________________?

For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will_____________________?