Fuels And Combustion MCQ Questions & Answers

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Each section contains 100 MCQs on Fuels and Combustion .

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

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if

A) It contains large amount of volatile matter B) It is stored in tall heaps C) Smaller fines are stored in large quantity D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Pick out the wrong statement.

A) Indian coals on an average contain 25-30% ash as against 10-12% ash in imported coking coal B) Ammonia is recovered in the form of ammonium sulphate in direct process of by-product recovery C) A high swelling index number of coking coal indicates poor caking properties of coal D) Wash oil is used for scrubbing benzol from coke oven gas

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

With increase in moisture content of coal, its

A) Calorific value increases sometimes B) Bulk density always decreases C) Clinkering tendency during combustion increases D) None of these

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Gray King Assay and Swelling Index of a coal is a measure of its

A) Swelling characteristics B) Abradability C) Agglutinating properties D) Resistance to impact breakage

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Caking index of a coal is a measure of its

A) Abradability B) Reactivity C) Agglutinating (binding) properties D) Porosity

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Micum Index of a coke is a measure of its

A) Reactivity B) Porosity C) Bulk density D) Hardness & strength

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Weathering of coal during storage causes

A) Reduction in coal size B) Increase in its friability C) Decrease in its caking capacity D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Low temperature oxidation of coal is accelerated by the

A) Storage in large heaps B) Storage in compressed piles C) Absence of porous or friable particles D) All of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Washing of coal is done to reduce the

A) Inherent impurities B) Adhering impurities C) Mineral matter D) Both B and C

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Fuels And Combustion MCQ Questions & Answers | Chemical Engineering