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Health Education and Community Pharmacy
Permanent of hardness of water is due ...
Que.
Permanent of hardness of water is due to the presence of
A.
Sulphates of Ca++and Mg++
B.
Chlorides of Ca++and Mg++
C.
Nitrates of Ca++and Mg++
D.
All the above
Right Answer is :
✓ D. All the above
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