What is the term used to describe a material that has high resistance to scratching or wear?

• A. Hardness
• B. Malleability
• C. Conductivity
• D. Fusibility

Answer: (A)

The term that best describes a material's high resistance to scratching or wear is hardness. Hardness refers to a material's ability to withstand deformation, especially permanent deformation, scratching, and indentation. In practical applications, a harder material can resist abrasive forces and maintain its surface integrity under stress, making it ideal for components that are exposed to wear, such as tools and structural elements.

Malleability, on the other hand, relates to a material's ability to deform under compressive stress, typically characterized by the ability to be shaped or bent without breaking. Conductivity pertains to how well a material can conduct electricity or heat, and fusibility refers to the ability of a material to melt. While these characteristics are important in their own domains, they do not specifically address the resistance to scratching or wear, which is why hardness is the most suitable answer in this context.