Universal solvent: Universal solvent is a solvent that dissolves many solutes in it.
Water dissolves more substances than any other liquid.
The angular structure of water gives its polarity means there is a partial negative charge on oxygen atom and a partial positive charge on hydrogen atom.
Due to its polar nature, water dissolves all polar substances in it. But water does not dissolve non-polar substances.
Example: Sodium chloride which is ionic in nature dissolves in water.