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Byju's Answer
Standard VII
Mathematics
Expressing Numbers in Standard Form
10 mN is equa...
Question
10 mN is equal
10
−
3
dynes.
A
True
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B
False
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Solution
The correct option is
B
False
We know that
1
m
N
=
10
−
3
N
Also
1
N
=
10
5
dynes
Thus
1
m
N
=
10
−
3
×
10
5
dynes
=
10
2
dynes
Thus the gives statement is false.
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0
Similar questions
Q.
State whether true or False
10 mN is equal to
10
−
3
dynes.
Q.
A solution which is
10
−
3
M
each in
M
n
2
+
,
F
e
2
+
and
H
g
2
+
is treated with
10
−
16
M
sulphide ion, If
K
s
p
of
M
n
S
,
F
e
S
,
Z
n
S
a
n
d
H
g
S
are
10
−
15
,
10
−
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,
10
−
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and
10
−
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respectively, which one will precipitate first?
Q.
Assertion :nm is not same as mN Reason:
1
n
m
=
10
−
9
m and
1
m
N
=
10
−
3
N
Q.
The ion
A
n
+
is oxidised to
A
O
−
3
by
M
n
O
−
4
changing to
M
n
2
+
in acidic solution. Given that
2.68
×
10
−
3
mol pf
A
n
+
requires
1.61
×
10
−
3
mol of
M
n
O
−
4
. The value of
n
is
:
Q.
If
10
%
of
m
is the same as
20
%
of
n
, then
m
:
n
is equal to
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