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p-Block Elements: Groups 13 and 14
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Aluminium compounds and alums
NEET level
Single correct option
Difficulty 1 of 3
pb129
The formula of potash alum is
A
K
X
2
SO
X
4
⋅
Al
X
2
(
SO
X
4
)
X
3
⋅
12
H
X
2
O
B
K
X
2
SO
X
4
⋅
Al
X
2
(
SO
X
4
)
X
3
⋅
24
H
X
2
O
C
Na
X
2
SO
X
4
⋅
Al
X
2
(
SO
X
4
)
X
3
⋅
24
H
X
2
O
D
K
X
2
SO
X
4
⋅
Cr
X
2
(
SO
X
4
)
X
3
⋅
24
H
X
2
O
Answer: B
Potash alum is
K
X
2
SO
X
4
⋅
Al
X
2
(
SO
X
4
)
X
3
⋅
24
H
X
2
O
, equivalently
KAl
(
SO
X
4
)
X
2
⋅
12
H
X
2
O
. The chromium compound is chrome alum.
Practice p-Block Elements: Groups 13 and 14
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