Related Questions

Outer combustion chamber of blast furnace stove is lined with __________ bricks.
A Fireclay
B Silica
C Chrome magnesite
D Zirconia
Lower part of hot metal mixer are lined with __________ bricks.
A Superduty fireclay
B High alumina
C Silica
D Carborundum
Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the
A Washing action of metal
B Corrosion by layer of slag
C Both A & B
D Neither A nor B
Roof of a basic open hearth furnace is lined with __________ bricks.
A Silica
B Fireclay
C Dolomite
D Magnesite
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
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
A 20
B 40
C 60
D 80
A red house is built from red bricks . A blue house is built from blue bricks. A white house is built from white bricks. Then what is a greenhouse made from ?
A green bricks
B wood
C glass
D steel
The solid brick shown is made of small square shaped bricks of side 1. when the large brick is disassembled into its component small bricks. the total surface area of all the small bricks is how much greater than the surface area of the large brick?
A 32
B 40
C 60
D 72
In the blast furnace, incorporation of water vapour in the blast gives the following effect.
A Increases the reducing potential of the gas
B Increases the flame temperature
C No significant change occurs
D Increases the hydrogen content in the metal

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