Which of the following is a common type of high-explosive material?

TNT, or Trinitrotoluene, is classified as a high-explosive material due to its ability to produce a rapid and powerful detonation. It has a specific chemical structure that allows it to explode at high velocities (over 8,000 meters per second), generating significant pressure and shock waves. TNT is widely used in military applications and demolition due to its stability, which permits safe handling and storage compared to other explosive materials. Its effectiveness and controlled detonation characteristics make it a standard in the explosive industry.

In contrast, gunpowder and black powder are classified as low-explosive materials. They primarily deflagrate, meaning they burn rapidly rather than detonate explosively. Ammonium nitrate, while it can be used in explosive formulations, is typically categorized as an oxidizer and requires a fuel to become a high explosive; by itself, it does not fit the high-explosive standard without a proper mixture. Thus, TNT stands out as the quintessential example of a common high-explosive material.