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Standard XII
Chemistry
Extraction of Aluminium
Main ore of a...
Question
Main ore of aluminium is:
A
A
l
2
S
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B
Bauxite
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C
Cinnabar
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D
Aluminium glance
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Solution
The correct option is
B
Bauxite
Main ore of aluminium is Bauxite. Pure aluminium oxide is called Alumina.
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Similar questions
Q.
Name the ore of aluminium. Describe two main uses of aluminium.
Q.
Silver glance or argentite is the_________.
Q.
Main source of aluminium is corundum. State True or False.
Q.
The Gibbs energy for the decomposition of
A
l
2
O
3
at
500
o
C
is as follows:
2
3
A
l
2
O
3
→
4
3
A
l
+
O
2
;
Δ
r
G
=
+
96
k
J
The voltage needed for the electrolytic reduction of aluminium oxide (
A
l
2
O
3
) at
500
o
C
is at least:
Q.
Find the number of aluminium ions present in
0.051
g
of aluminium oxide
(
A
l
2
O
3
)
.
(Atomic mass :
A
l
= 27 amu ;
O
= 16 amu)
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