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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.

Low temperature carbonisation of coal produces_________________?

A Metallurgical coke

B Soft coke

C Very low calorific value coke oven gas

D No by-products

Review Detailed Answer

Correct Answer: Soft coke

Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around ______________ cm/hr?

A 2.5

B 0.5

C 10

D 20

Review Detailed Answer

Correct Answer: 2.5

A coal having higher volatile matter content will necessarily have lower____________________?

A Ash fusion temperature

B Calorific value

C Ignition temperature

D Caking index

Review Detailed Answer

Correct Answer: Ignition temperature

Function of secondary air in pulverised coal firing is to_________________?

A Transport the coal to the burner

B Dry the coal

C Ensure efficient burning of coal around the burner

D Reduce primary air requirement

Review Detailed Answer

Correct Answer: Ensure efficient burning of coal around the burner

The advantage of firing pulverised coal in the furnace lies in the fact, that it____________________?

A Permits the use of high ash content coal

B Permits the use of low fusion point ash coal

C Accelerates the burning rate and economises on fuel combustion

D All A., B. and C.

Review Detailed Answer

Correct Answer: Accelerates the burning rate and economises on fuel combustion

Calorific value of both the solid & liquid fuels can be determined by using ______________ calorimeter?

A Junker’s

B Bomb

C Boy’s

D None of these

Review Detailed Answer

Correct Answer: Bomb

The most matured coal out of the following is__________________?

A Lignite

B Semi-anthracite

C Sub-bituminous

D Bituminous

Review Detailed Answer

Correct Answer: Semi-anthracite

(64-132) rank coal (ASTM) means a coal with 64%___________________?

A Fixed carbon and having a heat value of 13, 200 BTU/1b

B Ash and a heating value of 13, 200 BTU/1b

C Fixed carbon and a heating value of 132 BTU/1b

D None of these

Review Detailed Answer

Correct Answer: Fixed carbon and having a heat value of 13, 200 BTU/1b

Ignition temperature decreases progressively from anthracite to lignite, because___________________?

A Volatile matter content increases

B Carbon content decreases

C Moisture content increases

D Ash content increases

Review Detailed Answer

Correct Answer: Volatile matter content increases

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3), while the C.V. is same on weight basis (i.e., kcal/kg) ?

A Propane and acetylene

B Propane and LPG

C Sewage gas and gobar gas

D B.F. gas and coke oven gas

Review Detailed Answer

Correct Answer: Propane and acetylene

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Low temperature carbonisation of coal produces_________________?

Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around ______________ cm/hr?

A coal having higher volatile matter content will necessarily have lower____________________?

Function of secondary air in pulverised coal firing is to_________________?

The advantage of firing pulverised coal in the furnace lies in the fact, that it____________________?

Calorific value of both the solid & liquid fuels can be determined by using ______________ calorimeter?

The most matured coal out of the following is__________________?

(64-132) rank coal (ASTM) means a coal with 64%___________________?

Ignition temperature decreases progressively from anthracite to lignite, because___________________?

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3), while the C.V. is same on weight basis (i.e., kcal/kg) ?