Set C - UPSC Prelims 2025 Solutions

QQuestion

What is the common characteristic of the chemical substances generally known as CL-20, HMX and LLM-105, which are sometimes talked about in media?

OOptions

A) These are alternatives to hydro- fluorocarbon refrigerants

B) These are explosives in military weapons

C) These are high-energy fuels for cruise missiles

D) These are fuels for rocket propulsion

✓Correct Answer

B) These are explosives in military weapons

DDalvoy Solutions

CL-20, HMX, and LLM-105 are all high-energy explosive compounds used in military applications:

CL-20 (Hexanitrohexaazaisowurtzitane): One of the most powerful non-nuclear explosives known, used in advanced military munitions and rocket propellants.

HMX (Cyclotetramethylene-tetranitramine): A powerful and relatively insensitive explosive used in military applications, including nuclear weapon triggers and advanced conventional munitions.

LLM-105 (2,6-diamino-3,5-dinitropyrazine-1-oxide): A relatively insensitive high explosive developed for military use, offering good performance with improved safety characteristics.

These compounds represent advanced explosive technology designed to provide maximum energy output while maintaining handling safety for military applications.

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SUPSC Prelims Strategy and Tips

When encountering technical chemical names in current affairs, look for context clues about their applications. Military-grade explosives often have complex chemical nomenclature and are frequently discussed in defense technology contexts.

SUPSC Prelims 2025 Syllabus Analysis

Science & Technology - Defense technology and advanced materials

AUPSC Prelims 2025 Question Analysis

Medium difficulty - requires awareness of current defense technology developments

Question 56

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