Consider list I with list II :

S.No List I List II

1. Heavy water Bicarbonates of Mg and Ca in water

2. Permanent Hard water Sulfates and Chloride of Mg and Ca in water

3. Soft water D₂O

4. Temporary Hard water No foreign ions in water

How many of the above pair is/are correct?

1 pair only

2 pairs only

3 pairs only

All of the above

Consider list I with list II : S.No List I List II 1. Heavy water Bicarbonates of Mg and Ca in water 2. Permanent Hard water Sulfates and Chloride of Mg and Ca in water 3. Soft water D2O 4. Temporary Hard water No foreign ions in water How many of the above pair is/are correct?