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Fuels and Combustion

Fuels and Combustion
Coke oven gas compared to blast furnace gas is

Less poisonous
All of these
Lighter
More explosive and inflammable

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Fuels and Combustion
__________ present in coal is not determined in its ultimate analysis.

Fixed carbon
Nitrogen
Hydrogen
Total carbon

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Fuels and Combustion
A coal having higher volatile matter content, has lower

Coke oven gas yield on carbonisation
Chance of catching fire during storage in open space
Ignition temperature
Smoking tendency on burning

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Fuels and Combustion
Which of the following fuels is generally not used in thermal power plant boiler firing?

Coal middling from washeries
Furnace oil, light diesel oil and tar/PCM
Pulverised coking coal
F. gas, coke oven gas and L.D. converter gas

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Fuels and Combustion
During coking of coal, the ash content (percentage)

Remains constant
Decreases
Increases
None of these

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Fuels and Combustion
The calorific value is the highest out of the following for

Producer gas
Coke oven gas
Water gas
Blast furnace gas

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