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Fuels and Combustion

Fuels and Combustion
Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C.

65
30
120
180

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

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Fuels and Combustion
Laboratory gas is obtained by the cracking of

Diesel
Fuel oil
Kerosene
Gasoline

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Fuels and Combustion
Calorific value of bituminous coal may be around __________ Kcal/kg.

500
1500
6500
20000

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Fuels and Combustion
Turndown ratio of a gas burner is equal to the

Minimum to maximum heat input ratio
Maximum to minimum permissible gas flow rate
Maximum to minimum heat input ratio
Both A & B

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Fuels and Combustion
Producer gas comprises mainly of

CO₂ & H₂
CO₂ & N₂
CO & H₂
CO & N₂

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