Chemistry
Permanent hardness of water is removed by:
- Adding calcium sulphate
- Boiling with potassium chloride
- Boiling
- Adding sodium carbonate
Related Questions
Sodium sulphate is soluble in:
- Ether
- Water
- Alcohol
- Benzene
Water acts as a universal solvent because:
- It is an organic compound
- It is polar and has a high dielectric constant.
- It is liquid at room temperature.
- It boils at 100°C
Solid solutions are called :
- Allotropes
- Isotopes
- Alloys
- Isotones
With a rise in temperature, the solubility of sodium chloride will:
- Increase rapidly
- Decrease
- Remain the same
- Increase slightly