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Chemical Industries
The process in which metal is separated from its ore and prepared for use is called
metallurgy
mining
crushing
Solvay process
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Chemical Industries
Solvay process is used to make
potassium carbonate
sodium carbonate
NaCl
NaOH
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Chemical Industries
Process in which some minerals are converted to the oxide by heating in the air at a temperature below their melting point is called
roasting
smelting
Bessemerization
concentration
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Chemical Industries
Process in which metal ions are reduced to free metals is called
roasting
smelting
Bessemerization
concentration
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Chemical Industries
Ore of copper is called
hematite
chalcopyrite
bauxite
halite
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Chemical Industries
Number of carbon atoms per molecule in lubricating oil is
14 to 20
20 to 50
50 to 70
more than 70
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Chemical Industries
Ore of lead is called
galena
zinc blende
cinnabar
chromite
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Chemical Industries
In magnetic separation, magnets are used to separate
mineral and gangue
metal and mineral
metal and gangue
iron and steel
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rikazzz
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Chemical Industries
The last step of metallurgy is
crushing, grinding or pulverizing of the ore
concentration of the ore
extraction of metal
refining of metal
Author:
rikazzz
Comment
Chemical Industries
A solid deposit containing a sufficiently high percentage of a mineral to make extraction of metal economically feasible is called
metal oxide
gangue
ore
none of above
Author:
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