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Fuels and Combustion

Fuels and Combustion
L.D. converter gas (produced in steel plant) comprises mainly of

CO (upto 65%) & CO₂
CO₂ & O₂
CO₂ & H₂
CO & O₂

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Fuels and Combustion
A coal having high volatile matter content will

Burn with a small non-smoky flame
Give less yield of tar and gas on carbonisation
Have a very high calorific value
None of these

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Fuels and Combustion
Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker.

1250
1400
1350
1100

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Fuels and Combustion
The calorific value of natural gas is about __________ kcal/Nm³.

35, 000
25, 000
2500
10, 000

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Fuels and Combustion
Coke made in narrower by-product coke ovens (as compared to wider ovens) is

Stronger
Smaller in size
Less reactive
All of these

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Fuels and Combustion
The cooling medium used in dry quenching of coke is

Phenolic water
Carbon dioxide
Air
Nitrogen

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