Which of the following is the full form of PENT or PETN, an explosive used in tunneling and military applications?

Explanation:

1. Pentaerythritol Tetranitrate (PETN) is a highly explosive compound used in both military and civilian applications, including tunneling operations and in the manufacturing of detonators and explosives.

2. PETN is a powerful, stable explosive and is often used in combination with other materials for controlled demolition or blasting operations.

 Additional InformationTypes of Explosives  

1. Dynamite: A high-energy explosive used in tunneling, effective for breaking hard rock and creating large blasts. It has a relatively quick detonation speed and is versatile for various tunneling conditions.

2. ANFO (Ammonium Nitrate Fuel Oil): A cost-effective, stable explosive often used for bulk blasting in soft to medium rock. It’s favored for large-scale operations due to its efficiency and low cost.

3. PETN (Pentaerythritol Tetranitrate): A highly sensitive explosive with a fast detonation velocity, used in tunneling for precise applications and where controlled blasting is required.

4. Gelignite: Similar to dynamite but with improved stability, Gelignite is commonly used in tunneling where a high degree of control is necessary, particularly in narrow or confined spaces.

5. TNT (Trinitrotoluene): Although less common than dynamite, TNT is used for specialized tunneling projects where a controlled, slower detonation is needed, providing predictable energy release.