Related Questions

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 manufactured from the ores by
A Dressing
B Calcination and roasting
C Smelting
D All the above
The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to
A Grey cast iron
B White cast iron
C Mottled cast iron
D Toughed cast iron
Sulphur in pig iron tends to make it
A Hard
B Soft
C Ductile
D Tough
The presence of sulphur in pig iron makes
A It easily machinable
B It brittle
C It hard
D The casting unsound
Increasing sulphur content in pig iron tends to make it
A Soft
B Hard
C Tough
D Ductile & malleable
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
Among the following iron ores, the highest percentage of iron content is found in–
A Haemetite
B Magnetite
C Limnonite
D None of these
Haematite is an ore/mineral of
A Zinc
B Iron
C Lead
D Manganese
Haematite is an ore of
A Copper
B Lead
C Iron
D Zinc

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