Related Questions

__________ iron is produced, when molten pig iron is chilled suddenly.
A White cast
B Grey cast
C Wrought
D None of these
Dephosphorisation of molten pig iron is favoured by
A oxidising and basic slag
B reducing and basic slag
C high activity co-efficient of phosphorous in metal
D oxidising and neutral slag
In a new production process, the number of units produced during the first week was 450. If the efficiency gradually increase so that 10 additional units can be produced each week, how many will be produced in the 10th week?
A 490
B 700
C 540
D 640
Pig iron is produced by blast furnaces in India using mostly the iron ore named
A Hematite
B Magnetite
C Siderite
D Chalcopyrite
Nodular cast iron is produced by adding ________ to the molten cast iron.
A Nickel
B Chromium
C Copper
D Magnesium
The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth's early life and solidified into hard rock's called
A granite
B basalt
C igneous rocks
D sedimentary rocks
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
If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called
A Bessemer pig
B Grey or foundry pig
C White or forge pig
D Mottled pig
Wrought iron is manufactured from pig iron by
A Refining
B Pudding
C Shingling
D All the above
The variety of pig iron used for manufacture of wrought iron, is
A Bessemer pig
B Grey or foundry pig
C White forge pig
D Mottled pig

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