Explosives are substances or devices capable of producing a volume of rapidly expanding gases that exert a sudden pressure on their surroundings. Chemical explosives are the most commonly used explosives, although mechanical and nuclear explosives do exist. All mechanical explosives are devices in which a physical reaction is produced, such as that caused by overloading a container with compressed air. While nuclear explosives are by far the most powerful, all nuclear explosives have been restricted to military weapons.From the information provided above, it can be validly concluded that

Directions: For each question, a paragraph will be given that contains all the information necessary to infer the correct answer. Use only the information provided in the paragraph. Do not speculate or make assumptions that go beyond this information. Also, assume that all information given in the paragraph is true, even if it conflicts with some fact known to you. Only one correct answer can be validly inferred from the information contained in the paragraph.