Q. Alum increases (Solved)
1. Hardness of water
2. Carbonates of water
3. Sulphates in water
4. Acidity of water
5. None of the above
- d. Acidity of water
1. Hardness of water
2. Carbonates of water
3. Sulphates in water
4. Acidity of water
5. None of the above