The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.

ANS:C - super

The term "super" in the context of materials or properties usually denotes a state or characteristic that exceeds normal or typical levels. It's often used to describe materials or phenomena that exhibit exceptional performance, capability, or quality beyond what is considered standard or average. For example, in the context of steel, the term "super" might be used to describe a specific grade of steel that possesses superior characteristics compared to regular or standard grades. This could refer to enhanced strength, hardness, corrosion resistance, or other desirable properties. Similarly, in other fields, "super" might be used to describe phenomena such as "superconductivity," where certain materials exhibit zero electrical resistance at extremely low temperatures, or "super-resolution microscopy," a technique that surpasses the diffraction limit of conventional light microscopy, allowing for higher resolution imaging. In summary, "super" is a prefix used to indicate excellence, superiority, or exceptional performance in various contexts, including materials science, technology, and other scientific disciplines.