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Question
Chemistry
The degree of hardness of water is usually expressed in terms of
Q. The degree of hardness of water is usually expressed in terms of
3419
202
AMU
AMU 2010
Hydrogen
Report Error
A
ppm by weight of
M
g
S
O
4
100%
B
g
/
L
of
C
a
C
O
3
and
M
g
S
O
3
present
0%
C
pp
m
by weight of
C
a
C
O
3
irrespective of whether it is actually present
0%
D
pp
m
of
C
a
C
O
3
actually present in water
0%
Solution:
Degree of hardness of water is measured in terms of ppm by weight of
C
a
C
O
3
irrespective of whether it is actually present or not.