Related Questions

Perminvar alloy having constant permeability is an alloy of
A Nickel, copper and iron
B Nickel, copper and zinc
C Copper, nickel and antimony
D Iron, zinc and bismuth
The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.
A Less than
B Equal to
C More than
D Either B or C; depends on the type of alloy
Constantan an alloy used in thermocouples is an alloy of
A Copper and tin
B Copper and zinc
C Copper and iron
D Copper and nickel
Which one among the following countries is the largest producer of Bauxite?
A Australia
B Brazil
C West Indies
D India
Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent.
A 55
B 70
C 80
D 90
Bauxite is used as raw material by which industry ?
A Aluminium
B Iron
C Steel
D Gold
Bauxite is an ore/mineral of
A Aluminium
B Beryllium
C Lead
D Tin
In the Bayer's process, bauxite is digested under pressure using
A H2SO4
B NaOH
C NH3
D HCl
Fusion of bauxite and __________ produces high alumina cement.
A Alum
B Limestone
C Coke
D Quartz
Bauxite calcining rotary kilns are lined with __________ bricks.
A Fireclay
B Carbon
C 85% alumina
D Corundum

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