Question :
| Degree of hardness | Nature of water |
|---|
| 1 | Extremely soft water | | 2 | Very soft water | | 3 | Soft water | | 9 | ? |
What can be filled in place of the question mark in the above table?
1. Excessive hard water
2. Reasonably soft water
3. Very hard water
4. Hard water
Answer :
4 - Hard water
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