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Olympiad-Science
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Class 10
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Q)
The main buffer system of the human blood is
a
.
H
2
C
O
3
−
H
C
O
3
b
.
H
2
C
O
3
−
C
O
2
−
3
c
.
C
H
3
C
O
O
H
−
C
H
3
C
O
O
−
d
.
N
H
2
C
O
N
H
2
−
N
H
2
C
O
N
H
+
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