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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 10
41.
Which of the following has the highest calorific value ?
Lignite
Sub-bituminous coal
Anthracite
Peat
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
__________ present in coal is not determined in its ultimate analysis.
Fixed carbon
Total carbon
Hydrogen
Nitrogen.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
The calorific value of L.D. converter gas is about __________ Kcal/Nm3 .
1800
800
4500
10000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
__________ prohibits the use of alcohols directly in petrol engines.
Low octane number
High cost & availability
Low flash point
Low calorific value
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Higher fuel combustion efficiency can not be achieved by
preheating of fuel gases & combustion air.
reducing sulphur content in the fuel.
adopting proper fuel firing technique & fuel preparation.
supplying correct amount of combustion air.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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