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Aerospace Materials Processes
Aerospace Materials Processes Basic
Quiz 1
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Q.1
Sulfide ores contain around _____ copper.
a) 9 – 10%
b) 8 – 12%
c) 4 – 5%
d) 0.5 – 2%
Q.2
The first process in extraction of an element from ore is typically ______
a) roasting
b) electrolysis
c) crushing
d) smelting
Q.3
Which of the following techniques are used in the extraction of copper?
a) Refining, down process
b) Smelting, vacuum pump
c) Roasting, refining
d) Roasting
Q.4
___________ is a sulfide ore of copper.
a) Chalcocite
b) Cuprite
c) Magnesite
d) Azurite
Q.5
Sulfide ores are typically processed through a technique known as __________
a) cathode
b) pyrometallurgy
c) hydrometallurgy
d) zarconsis
Q.6
Copper ores typically contain less than _________ of copper.
a) 0.15%
b) 0.2%
c) 1%
d) 0.4%
Q.7
Oxide ores of copper cannot be processed using hydrometallurgy.
a) True
b) False
Q.8
Smelting is done to eradicate unwanted materials like ___________ to the fullest extent possible.
a) copper
b) copper and gangue minerals
c) sulfur
d) sulfur and gangue minerals
Q.9
The final output after processing of copper ores to be purified produces around ____________ pure copper.
a) 100%
b) 45%
c) 99.9%
d) 86%
Q.10
It is impossible to recycle used copper products.
a) True
b) False
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