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Fuels and Combustion

Fuels and Combustion
By-products are __________ recovered in 'Beehive ovens'.

Fully
Negligibly
Partially
Not at all

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Fuels and Combustion
Calorific value of furnace oil is about __________ Kcal/kg.

5000
15000
20000
10000

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Fuels and Combustion
Which will have the least volatile matter and hence will be the most difficult to ignite?

Semi-bituminous coal
Aanthracite
Coke
Bituminous coal

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Fuels and Combustion
Preheating of __________ the flame temperature.

Either the fuel or the air or both, increases
The gaseous fuel before combustion decreases
Combustion air decreases
Either the fuel or the air does not affect

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Fuels and Combustion
Highly reactive coke have lower

Coke reactivity index (CRI)
Both B and C
Critical air blast (CAB) value
Porosity

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Fuels and Combustion
Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in

Oxygen
Air
Either A or C without gain or loss of heat
Either A or B

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