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Byju's Answer
Standard VIII
Mathematics
Indices
Calculate the...
Question
Calculate the square of 0.222.....
A
1/9
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B
4/81
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C
2/9
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D
1/81
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Solution
The correct option is
B
4/81
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Similar questions
Q.
Calculate the EMF of the cell at 298 K.
P
t
|
H
2
(
1
a
t
m
)
|
N
a
O
H
(
x
M
)
|
|
N
a
C
l
(
x
M
)
|
A
g
C
l
(
s
)
|
A
g
If
E
0
C
l
−
/
A
g
C
l
/
A
g
=
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V
.
Q.
The value of 0.111.... + 0.222..... is
Q.
Excess of
A
g
C
l
is added to
0.1
M
solution of
K
B
r
at
298
K
. Calculate the equilibrium concentrations of
B
r
−
and
C
l
−
ions.
E
∘
C
l
−
/
A
g
C
l
/
A
g
=
0.222
v
o
l
t
E
∘
B
r
−
/
A
g
B
r
/
A
g
=
0.095
v
o
l
t
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Q.
0.124
g
m
of an organic compound containing phosphorus gave
0.222
g
m
of
M
g
2
P
2
O
7
the usual analysis. Calculate the percentage of phosphorous in the compound.
(
M
g
=
24
,
P
=
31
)
Q.
Value of
[
(
0.111
)
3
+
(
0.222
)
3
−
(
0.333
)
2
+
(
0.333
)
2
(
0.222
)
]
2
will be :
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