Which of the following is an intensive property?

• A. Mass
• B. Volume
• C. Area
• D. Colour

Answer: (D)

Intensive properties describe the nature of a material, not how much of it you have. Color fits this because the color you observe is determined by the material’s composition and how it interacts with light, and it stays the same whether you have a tiny drop or a large amount. In contrast, mass, volume, and area all grow when you have more material or a larger sample, so they are extensive properties. For example, doubling the amount of substance doubles its mass and volume, and typically increases the surface area as well. So color is the best answer because it does not depend on the amount of substance.