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Byju's Answer
Standard XII
Chemistry
Preparations and Reactions of Sodium Oxide
Which of the ...
Question
Which of the following is highly soluble?
A
N
a
2
O
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B
K
2
O
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C
R
b
2
O
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D
C
s
2
O
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Solution
The correct option is
C
C
s
2
O
On moving down the group of alkali metals, the solubility of oxides incereases. Hence
C
s
2
O
has maximum solubility.
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Similar questions
Q.
Which of the following is(are) not correctly matched?
(1) Basic strength of oxides:
C
s
2
O
<
R
b
2
O
<
K
2
O
<
N
a
2
O
<
L
i
2
O
(2) Stability of peroxides:
N
a
2
O
2
<
K
2
O
2
<
R
b
2
O
2
<
C
s
2
O
2
(3) Stability of bicarbonates:
L
i
H
C
O
3
<
N
a
H
C
O
3
<
K
H
C
O
3
<
R
b
H
C
O
3
<
C
s
H
C
O
3
(4) Melting point:
N
a
F
<
N
a
C
l
<
N
a
B
r
<
N
a
I
Q.
Which is not correctly matched?
(1) Basic strength of oxides.
C
s
2
O
<
R
b
2
O
<
K
2
O
<
N
a
2
O
<
L
i
2
O
(2) Stability of peroxides.
N
a
2
O
2
<
K
2
O
2
<
R
b
2
O
2
<
C
s
2
O
2
(3) Stability of bicarbonates.
L
i
H
C
O
3
<
N
a
H
C
O
3
<
K
H
C
O
3
<
R
b
H
C
O
3
<
C
s
H
C
O
3
(4) Melting point.
N
a
F
<
N
a
C
l
<
N
a
B
r
<
N
a
l
Q.
Which of the following is not correctly matched?
1) Basic strength of oxides
→
C
s
2
O
<
R
b
2
O
<
K
2
O
<
N
a
2
O
<
L
i
2
O
2) Stability of peroxides
→
N
a
2
O
2
<
K
2
O
2
<
R
b
2
O
2
<
C
s
2
O
2
3) Stability of bicarbonates
→
L
i
H
C
O
3
<
N
a
H
C
O
3
<
K
H
C
O
3
<
R
b
H
C
O
3
<
C
s
H
C
O
3
4) Melting point
→
N
a
F
<
N
a
C
l
<
N
a
B
r
<
N
a
I
Q.
Increasing order of basic character of
M
g
O
,
S
r
O
,
K
2
O
,
N
i
O
and
C
s
2
O
Q.
Which is not correctly matched?
(1) Basic strength of oxides:
C
s
2
O
<
R
b
2
O
<
K
2
O
<
N
a
2
O
<
L
i
2
O
(2) Stability of carbonates:
N
a
2
C
O
3
<
K
2
C
O
3
<
R
b
2
C
O
3
<
C
s
2
C
O
3
(3) Stability of bicarbonates:
L
i
H
C
O
3
<
N
a
H
C
O
3
<
K
H
C
O
3
<
R
b
H
C
O
3
<
C
s
H
C
O
3
(4) Melting point:
N
a
F
<
N
a
C
l
<
N
a
B
r
<
N
a
I
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