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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
Forge pig may be converted to wrought iron by
A Rolling
B Pudding
C Shingling
D Refining
Pig iron is manufactured from the ores by
A Dressing
B Calcination and roasting
C Smelting
D All the above
The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
A Cementation process
B Crucible process
C Bessemer process
D Open hearth process
Which is the false statement about wrought iron? It has
A High resistance to rusting and corrosion
B High ductility
C Ability of hold protective coating
D Uniform strength in all directions
Wrought iron is
A Hard
B High in strength
C Highly resistant to corrosion
D Heat treated to change its properties
The tensile strength of wrought iron is maximum
A Along the lines of slag distribution
B Perpendicular to lines of slag distribution
C Uniform in all directions
D None of the above
Wrought iron
A Is a ductile material
B Can be easily forged or welded
C Cannot stand sudden and excessive shocks
D All of these
Wrought iron is used for
A Structural works in beams
B Small sized water pipes
C Columns and struts
D None to these
Wrought iron contains carbon about
A 1.5% to 5.5%
B 0.5% to 1.75%
C 0.1% to 0.25%
D None to these

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