Read the passage carefully and answer the Questions.

A homogeneous mixture of two or more than two components has uniform composition and properties. The binary solutions have two components, which may be solid, liquid or gas. The resultant solution has a larger amount of solvent and a smaller amount of solute. The amount of solute in a given amount of solvent decides the concentration of the resulting solution. The concentration can be expressed in various ways, like molarity, molality, normality and mole fraction.

Which of the following property is independent of temperature?

Mass

The correct answer is Option (2) → Mass

• Mass: It is the amount of matter in the system and is independent of temperature (does not change with temperature variations).
• Density: Depends on temperature (most substances expand on heating, so density decreases with increasing temperature).
• Molarity: Concentration in moles per liter of solution. Volume of solution changes with temperature (thermal expansion), so molarity is temperature-dependent.
• Normality: Similar to molarity (equivalents per liter), also depends on volume → temperature-dependent.

Among the options, only mass remains constant regardless of temperature changes.

Thus, the correct answer is Mass.