Which of the following is NOT a type of explosion?

The correct answer identifies "Radiative" as not a recognized type of explosion. An explosion typically involves a rapid release of energy that generates gas, heat, and pressure, resulting in physical destruction or noise.

Chemical explosions involve reactions that produce gas and heat, such as combustion. Nuclear explosions result from nuclear reactions, releasing vast amounts of energy, usually in the form of a nuclear bomb. Mechanical explosions can occur from physical forces, such as a pressure vessel failing or a boiler explosion, where mechanical or thermal energy leads to a violent release.

On the other hand, "Radiative" does not fit into the classification of explosions. While radiation can be a byproduct of certain types of explosions, particularly nuclear, it is not a type of explosion in itself. The term typically refers to the emission of energy in the form of waves or particles, such as alpha or beta radiation, rather than a violent release of energy like the others listed. Thus, "Radiative" appropriately stands out as the correct choice.