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Byju's Answer
Standard XII
Chemistry
Abundance of Elements
Which of the ...
Question
Which of the followings is trace element?
A
Ca
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B
K
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C
Mg
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D
Cu
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Solution
The correct option is
D
Cu
Copper is a trace element.
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Similar questions
Q.
The standard reduction potential for
M
g
2
+
/
M
g
is
−
2.37
V
and for
C
u
2
+
/
C
u
is
0.337
. The
E
o
c
e
l
l
for the following reaction is
M
g
+
C
u
2
+
→
M
g
2
+
+
C
u
Q.
Which one of the following species loses one or more electrons in the chemical reaction shown?
M
g
+
C
u
2
+
→
M
g
2
+
+
C
u
Q.
Which of the following reactions will not occur? Why not?
(a)
MgSO
4
(
aq
)
+
Cu
(
s
)
→
CuSO
4
(
aq
)
+
Mg
(
s
)
(b)
CuSO
4
(
aq
)
+
Fe
(
s
)
→
FeSO
4
(
aq
)
+
Cu
(
s
)
(c)
MgSO
4
(
aq
)
+
Fe
(
s
)
→
FeSO
4
(
aq
)
+
Mg
(
s
)
Q.
Which of the following statements is not true?
M
g
2
+
(
a
q
)
+
2
e
−
→
M
g
(
s
)
;
E
0
=
−
2.36
V
C
u
2
+
(
a
q
)
+
2
e
−
→
C
u
(
s
)
;
E
0
=
0.34
V
Q.
M
g
+
C
u
O
→
M
g
O
+
C
u
Which of the following is wrong relating to the above reaction?
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