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Fuels and Combustion

Fuels and Combustion
Calorific value of of blast furnace gas is around __________ KCal/Nm³.

4200
6500
1800
850

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Fuels and Combustion
The reaction, C + CO₂ ⟷ 2CO, taking place during coal gasification is called the __________ reaction. n.

Neumann reversal
Boudouard
Reduction
Shift conversion

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Fuels and Combustion
Which of the following is a measure of the agglutinating (i.e., binding) property of coal?

Gray-king index
Caking index
Thickness of plastic layer
Swelling index

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Fuels and Combustion
Which of the following is not used as a binder in coal briquetting?

Line
Molasses
Pitch
Tar

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Fuels and Combustion
Critical Air Blast (CAB) value of coke is a direct measure of its

Strength
Hardness
Reactivity
None of these

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Fuels and Combustion
Low temperature carbonisation of coal produces

No by-products
Metallurgical coke
Soft coke
Very low calorific value coke oven gas

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