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Fuels and Combustion

Fuels and Combustion
Percentage of carbon monoxide in blast furnace gas may be around

52
22
8
14

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Fuels and Combustion
The cuprous chloride used in orsat apparatus can absorb

All of these
Only CO
Both CO and CO₂
Both CO and O₂

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Fuels and Combustion
Coal tar fuel - 200 (CTF 200) is a mixture of

Pitch and creosote oil
Light oil and pitch
Solar oil and pitch
Anthracene and crecosote oil

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Fuels and Combustion
(64-132) rank coal (ASTM) means a coal with 64%

Ash and a heating value of 13, 200 BTU/1b
None of these
Fixed carbon and having a heat value of 13, 200 BTU/1b
Fixed carbon and a heating value of 132 BTU/1b

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Fuels and Combustion
Ignition temperature of a fuel in air is __________ that in pure oxygen.

More than
Either more or less; depends on the type of fuel
Less than
Equal to

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Fuels and Combustion
Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C.

70
105
85
145

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