Fuels And Combustion MCQ Questions & Answers

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Each section contains 100 MCQs on Fuels and Combustion .

Gray-King Assay and Roga Index of coal is a measure of its

A) Abradability B) Grindability C) Weathering properties D) Caking and swelling properties

Discuss

Answer & Solution

Answer: Option D

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

Which of the following is a rich fuel gas?

A) Producer gas B) Coal gas from underground gasification of coal C) Refinery gases D) None of these

Discuss

Answer & Solution

Answer: Option C

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

Turndown ratio of a gas burner is equal to the

A) Maximum to minimum heat input ratio B) Maximum to minimum permissible gas flow rate C) Both A & B D) Minimum to maximum heat input ratio

Discuss

Answer & Solution

Answer: Option C

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

__________ process is meant for direct hydrogenation of coal to produce liquid fuel.

A) Fischer-Tropsch B) Bergius C) Lurgi D) None of these

Discuss

Answer & Solution

Answer: Option B

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

Advantages of fluidised bed combustion are

A) Reduced NO_x formation in flue gas B) Lower furnace operating temperature C) High heat transfer rate D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

In general, the limit of inflammability/explosion limit of fuel gases is widened by the

A) Increase in gas pressure B) Increase in temperature (i.e. preheating) C) Use of pure oxygen for combustion instead of air D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C.

A) 30 B) 65 C) 120 D) 180

Discuss

Answer & Solution

Answer: Option B

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

Shatter index of the coke is a measure of its

A) Strength B) Bulk density C) Reactivity D) None of these

Discuss

Answer & Solution

Answer: Option A

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

A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms.

A) 1 to 2 B) 3 to 4 C) 5 to 15 D) 20 to 40

Discuss

Answer & Solution

Answer: Option C

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

'Fat' coal means a coal having

A) Low calorific value B) High volatile matter C) Low ash content D) Non smoking tendency

Discuss

Answer & Solution

Answer: Option B

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

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Fuels And Combustion MCQ Questions & Answers | Chemical Engineering