Fuels And Combustion MCQ Questions & Answers

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Each section contains 100 MCQs on Fuels and Combustion .

Coke compared to the coal from which it has been made, contains

A) Less volatile matter B) More carbon C) Greater percentage of ash D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

Higher fuel combustion efficiency can not be achieved by

A) Preheating of fuel gases & combustion air B) Reducing sulphur content in the fuel C) Adopting proper fuel firing technique & fuel preparation D) Supplying correct amount of combustion air

Discuss

Answer & Solution

Answer: Option B

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

Pick out the correct statement.

A) Oxygen content decreases from lignite to bituminous coal as the coalification increases B) The less the oxygen content, better is the coal, as it reduces the calorific value C) With increase in oxygen content, moisture holding capacity of coal increases and the caking power decreases D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

Higher efficiency in the combustion of solid fuel can not be achieved by

A) Proper fuel preparation B) Keeping the flue gas exhaust temperature very high C) Adopting efficient-fuel firing technique & equipment D) Supplying correct quantity of combustion air

Discuss

Answer & Solution

Answer: Option B

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

A coal gasifier opearating at 20 atm. (e.g. Lugri gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having

A) Higher methane content and thus higher calorific value B) Higher carbon monoxide content C) Lower carbon dioxide content D) None of these

Discuss

Answer & Solution

Answer: Option A

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

Which of the following has the highest gross calorific value?

A) Blast furnace gas B) Coke oven gas C) Carburetted water gas D) Oil refinery gas

Discuss

Answer & Solution

Answer: Option D

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

Highly reactive coke have lower

A) Porosity B) Coke reactivity index (CRI) C) Critical air blast (CAB) value D) Both B and C

Discuss

Answer & Solution

Answer: Option C

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

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

Discuss

Answer & Solution

Answer: Option A

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

Pulverised coal used in boiler firing need not have

A) Less moisture content B) High fusion point of its ash C) High bulk density D) Lower ash content

Discuss

Answer & Solution

Answer: Option B

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

Mineral matter, 'M' and ash percentage 'A' in coal are roughly related as

A) M = 1.8 A B) M = 0.5 A C) M = 1.1 A D) M = A

Discuss

Answer & Solution

Answer: Option C

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

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Fuels And Combustion MCQ Questions & Answers | Chemical Engineering