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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 7
6.
Fixed carbon in coal is defined as
that present in volatile matters.
the total quantity of carbon present in the coal.
hundred minus the percentage of volatile matter, ash and moisture.
the one which is present in the residue after combustion.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Which of the following fuels has the highest calorific value per unit mass (kcal/kg) ?
Coal
Kerosene
Natural gas
Furnace oil
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases.
hydrogen
methane
unsaturated hydrocarbons
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
During its calorific value determination by bomb calorimeter, coal is combusted by
air
oxygen
oxygen enriched air
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Abel apparatus is used for those oils, whose flash points are___°F.
<120
>120
>280
300-600
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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