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Fuels and Combustion

Fuels and Combustion
Which of the following gaseous fuels has the lowest calorific value?

Converter gas
Refinery gas
Gobar gas
Blast furnace gas

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Fuels and Combustion
Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent.

55 to 75
15 to 25
75
35 to 45

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Fuels and Combustion
In flue gas analysis by Orsat's apparatus, oxygen is absorbed by

Cuprous chloride
Potassium hydroxide
Alkaline pyragllol solution
None of these

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Fuels and Combustion
Low temperature carbonisation of coal produces

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

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Fuels and Combustion
Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant?

Ammonium phosphate
None of these
Ammonium nitrate
Ammonium sulphate

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Fuels and Combustion
The gas which contributes maximum to the heating value of natural gas is

CO
CH₄
CO₂
H₂

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