A low explosive is characterized by which of the following?

A low explosive is characterized primarily by its low reaction velocity, meaning that it undergoes a chemical reaction at a comparatively slower rate than high explosives. This lower reaction velocity results in a deflagration, where the explosive material burns rather than detonates, producing a pressure wave that moves slower than the speed of sound.

In practical terms, low explosives are typically used in applications like propellants or fireworks, as they allow for a controlled release of energy and do not produce the instantaneous massive shock waves associated with high explosives. The slower reaction leads to gradual combustion, which can be advantageous in applications requiring precision and safety.

The other characteristics mentioned in the incorrect options do not apply to low explosives. For instance, high speed detonation pertains more to high explosives, which explode at supersonic speeds. High pressure volume generally relates to the rapid release of gases from high explosives, thus not applicable to low explosives. Immediate ignition potential is more relevant to high explosives that can be triggered under certain conditions, unlike low explosives that often require a more sustained ignition source.