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Fuels and Combustion

Fuels and Combustion
A good coking coal should have high __________ content.

None of these
Sulphur & phosphorus
Ash
Moisture

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Fuels and Combustion
Percentage of carbon monoxide in blast furnace gas may be around

14
22
8
52

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Fuels and Combustion
High amount of sulphur and phosphorous in coke causes

Decrease in its calorific value
Brittleness of steel made by using it
None of these
Increase in its strength

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Fuels and Combustion
Bomb calorimeter is used for the determination of calorific value of the __________ fuels.

Both B and C
Liquid
Gaseous
Solid

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Fuels and Combustion
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

Higher carbon monoxide content
Higher methane content and thus higher calorific value
Lower carbon dioxide content
None of these

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Fuels and Combustion
The pyragallol solution used in orsat apparatus can absorb

Both O₂ and CO₂
All of these
Only O₂
Both O₂ and CO

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