Forge pig may be converted to wrought iron by

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

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

__________ 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

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

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

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

Forge pig may be converted to wrought iron by

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