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Subjects
Science State Board
Class 10
Periodic Classifications of elements
Metallurgy of Aluminium, Copper and Iron
1.
Choose the best: Metallurgy of Aluminium
Exercise condition:
2
m.
Choose the best answer:
1.
__________ is a ore of aluminium.
Zinc blende
Cryolite
Cuppyrite
Limestone
2.
Aluminium exists in the __________ state because it is a reactive metal.
mixed
combined
relative
all the above
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