Which type of ammunition is included in explosive class/division 1.2?

The choice that identifies 20 mm and 30 mm ammunition as included in explosive class/division 1.2 is correct because this classification pertains to ammunition that has a lower risk of causing a mass detonation and is designed to be less hazardous. Class/division 1.2 includes ammunition that is known to have a low probability of creating a mass explosion but can still project fragments and cause a significant risk of injury or property damage upon detonation.

20 mm and 30 mm ammunition, which are often used in aircraft and larger caliber systems, fall within this category due to their design and potential effects. This classification is essential for safe handling, storage, and transportation within military operations, ensuring that personnel are aware of the specific risks associated with different types of ordnance.

In contrast, other types of ammunition listed do not fall under this specific classification. For example, 7.62 mm ammunition and small arms ammunition generally correspond to a different risk profile and handling requirements, while hand grenades may be classified under a separate division due to their specific explosive characteristics and effects. Understanding these classifications helps ensure compliance with safety regulations and mitigates risks associated with ammunition handling.