Unit - 4.2 Water as universal solvent, Reasons for its pollution and its prevention — CHEMISTRY STD 6 — Question

The four essential conditions for the formation of a solution are –
Number of substances – There should be a minimum of two substances that are readily soluble in each other. The substance in greater quantity is called a solvent and the substance in lesser quantity is called a solute.
Mixing – The solution should be stirred continuously to ensure the proper dissolving of a solute in the solvent.|\\\
State of solute –
The solute if solid should be in the form of fine powder to dissolve it easily.
If the solute is liquid then it should be properly mixed with a solvent.
If the solute is gas then it should be passed through a delivery tube while keeping the container covered.
Temperature – The temperature of the solvent should be higher than that of the solute as it increases the solubility of the solute in the solvent.