Related Questions

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
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
__________ iron is produced, when molten pig iron is allowed to cool gradually.
A White cast
B Grey cast
C Wrought
D None of these
__________ iron is produced, when molten pig iron is chilled suddenly.
A White cast
B Grey cast
C Wrought
D None of these
Pig iron is produced by blast furnaces in India using mostly the iron ore named
A Hematite
B Magnetite
C Siderite
D Chalcopyrite
A company produces five types of shirts -- A,B,C,D and E-using cloth of three qualities -- high, medium and low , using dyes of three qualities-- high, medium and low. One shirt requires 1.5 m of cloth .The following table gives respectively : The number of shirts (of each category) produced, in thousands. The percentage distribution of cloth quality in each type of shirt, and The percentage distribution of dye quality in each type of shirt. What is the ratio of low quality dye used for C-type shirts to that used for D-type shirts ?
A 2:3
B 1:2
C 2:1
D 3:2
Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight
A 1.5
B 3
C 5
D 7
Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag.
A 2
B 3
C 0.8
D 6
Limestone is added in the blast furnace (during pig iron manufacture) to
A Form slag by combining with impurities
B Supply heat by undergoing exothermic reaction with impurities
C Reduce the coke consumption
D Reduce slag viscosity
An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.
A Walking beam
B Shaft
C Tunnel
D Rotary hearth

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