Related Questions

Iron ore hametite is concentrated using
A Electro magnetic separation mainly
B Gravity separation
C Froth floatation
D Roasting
Which is the main reducing agent during production of iron from iron ore in a blast furnace?
A C
B CO
C CO2
D H2
Which of the following is capable of acting both as an acid flux as well as a basic flux in the metal extraction from its ore?
A Silica
B Lime
C Alumina
D Fluorite
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
A 20
B 40
C 60
D 80
Blast furnace produces following by reduction of iron ore
A Cast iron
B Pig iron
C Wrought iron
D Malleable iron
In the blast furnace, incorporation of water vapour in the blast gives the following effect.
A Increases the reducing potential of the gas
B Increases the flame temperature
C No significant change occurs
D Increases the hydrogen content in the metal
The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon.
A 0.2
B 2
C 4
D 8
Operation of blast furnace stove is based on the principles of a __________ furnace.
A Regenerative
B Recuperative
C Both A and B
D Neither A nor B
The fuel mostly used in blast furnace for extracting pig iron from iron ores is
A Hard coke
B Soft coke
C Pulverized coal
D Bituminous coal
Pig iron is produced by blast furnaces in India using mostly the iron ore named
A Hematite
B Magnetite
C Siderite
D Chalcopyrite

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