Which of the following is true about low explosives?

Low explosives are characterized by their combustion characteristics, impacting their use and classification. The statement about low explosives burning rapidly is accurate, as they indeed undergo a deflagration process, which means they burn at a rate slower than that of high explosives.

These explosives typically produce a relatively low velocity of reaction compared to high explosives, which leads them to be used primarily in applications such as propellants in firearms or fireworks, where controlled burning is essential for effectiveness. The rapid burning allows for a controlled release of gas, which generates the necessary pressure to propel projectiles or create a desired effect.

While low explosives can be used as propellants—making that statement also true—there are characteristics about how they behave overall, including the fact that they do not explode suddenly as high explosives do, which makes the option "All of the above" misleading if interpreted broadly.

Therefore, while the other characteristics align with certain characteristics of low explosives, the statement about burning rapidly specifically underscores the fundamental behavior of these materials, confirming why that aspect stands out as a true statement regarding low explosives.