Sulphur in pig iron tends to make it

Increasing sulphur content in pig iron tends to make it

A

Soft

B

Hard

C

Tough

D

Ductile & malleable

The presence of sulphur in pig iron makes

A

It easily machinable

B

It brittle

C

It hard

D

The casting unsound

Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as

A

Bessemer pig

B

Grey or foundry pig

C

White or forge pig

D

Mottled pig

Very high sulphur in pig iron makes

A

Its casting unsound

B

Its hard and machinable

C

Its brittle and malleable

D

All of the above

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

__________ 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

Sulphur in pig iron tends to make it

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