Correct Option (B)
CL-20, HMX, and LLM-105 are high-energy chemical explosives primarily used in military and defence applications. They belong to the class of energetic materials known for their high detonation velocity and pressure.
- CL-20 (Hexanitrohexaazaisowurtzitane) is recognized as one of the most powerful non-nuclear explosives. It is a cage-structured nitramine characterized by extremely high energy density, though it is highly sensitive to shock and friction.
- HMX (Octogen) is a powerful nitramine explosive, more potent than RDX. It is widely used in military-grade plastic explosives, detonators, and as an energetic component in some rocket propellants due to its high detonation velocity and pressure.
- LLM-105 (2,6-diamino-3,5-dinitropyrazine-1-oxide) is an insensitive high explosive (IHE). It is engineered to reduce sensitivity to external stimuli such as shock, heat, and friction, thereby enhancing safety during storage and transport, while maintaining substantial explosive performance.
Incorrect Options:
Option 1: These substances are not related to refrigeration technology or alternatives to hydro-fluorocarbon refrigerants.
Options 3 and 4: While CL-20, HMX, and LLM-105 are high-energy materials, their primary function is as explosives (detonation) rather than as fuels (combustion) for propulsion systems like cruise missiles or rockets. Although they may be incorporated into warheads of such systems, they do not serve as propellants themselves.