Fuels and Combustion
As the C/H ratio of the fuel increases, the amount of CO₂ formed on combustion __________ for the same percentage of excess air.

Remains same
Decreases
May increase or decrease depending on the type of fuel
Increases

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Fuels and Combustion
A good metallurgical coke

Should be brittle
Must contain moderate quantities of ash, moisture, sulphur and volatile matters
Should have low fusion point of its ash
Should have high porosity

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