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Byju's Answer
Standard X
Chemistry
Extraction of Aluminium
Impure bauxit...
Question
Impure bauxite on reaction with
N
a
O
H
gives _____________.
A
A
l
(
O
H
)
3
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B
N
a
A
l
O
2
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C
A
l
2
O
3
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D
All of the above
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Solution
The correct option is
C
N
a
A
l
O
2
A
l
2
O
3
+
2
N
a
O
H
⟶
2
N
a
A
l
O
2
+
H
2
O
Suggest Corrections
0
Similar questions
Q.
In the reaction,
N
a
O
H
+
A
l
(
O
H
)
3
→
N
a
A
l
O
2
+
H
2
O
, the equivalent mass of
A
l
(
O
H
)
3
is:
Q.
The complex formed with
A
l
2
O
3
is leached from bauxite using concentrated
N
a
O
H
solution is:
Q.
(A), a colourless solution, gives white precipitate (B) with NaOH solution but the precipitate dissolves in excess of NaOH forming (C). (C) does not give any precipitate with
H
2
S
but on boiling with
N
H
4
C
l
, white precipitate (B) appears. (A) also gives yellow precipitate with
A
g
N
O
3
. (A), (B) and (C) are as follows:
(A) :
A
l
B
r
3
(B) :
A
l
(
O
H
)
3
and (C) :
N
a
A
l
O
2
If true enter 1, if false enter 0.
Q.
The impurity which separates out on addition of a conc. soln. of alkali to impure bauxite is:
Q.
N
a
A
l
O
2
on hydrolysis gives _________.
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