Pig iron is produced by blast furnaces in India using mostly the iron ore named

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

Which is the main reducing agent during production of iron from iron ore in a blast furnace?

A

C

B

CO

C

CO₂

D

H₂

__________ is used as a flux in the extraction of iron from iron ore (hametite) in blast furnace.

A

Bauxite

B

Limestone

C

Quartz

D

Manganese

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

__________ 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

Blast furnace produces following by reduction of iron ore

A

Cast iron

B

Pig iron

C

Wrought iron

D

Malleable iron

Pig iron is produced by blast furnaces in India using mostly the iron ore named

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