2025Direct Conceptual / Factual MCQDefense Tech & Materials Science
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?
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
Explanation: * (b) These are explosives in military weapons is correct: CL-20, HMX, and LLM-105 are high-energy explosive materials primarily used in military and defense applications. * CL-20 is one of the most powerful non-nuclear explosives known, but is highly sensitive to shock. * HMX (Octogen) is a widely used nitramine explosive used in military-grade plastic explosives and shaped charges. * LLM-105 is classified as an "insensitive high explosive" designed to enhance transport safety without losing significant explosive power.
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2025Pairs/Matching (How Many Style)Defense Systems & Aerospace
With reference to India's defence, consider the following pairs:
Aircraft type : Description
I. Dornier-228 : Maritime patrol aircraft
II. IL-76 : Supersonic combat aircraft
III. C-17 Globemaster III : Military transport aircraft
How many of the pairs given above are correctly matched?
A.Only one
B.Only two
C.All the three
D.None of the above
Explanation: * Pair I is correctly matched: The twin-engine turboprop Dornier-228 aircraft is deployed as a maritime surveillance and patrol aircraft by the Indian Navy and Coast Guard. * Pair II is not correctly matched: The Ilyushin Il-76 is a four-engine strategic airlifter designed for heavy cargo and troop transport, not a supersonic combat aircraft. * Pair III is correctly matched: The Boeing C-17 Globemaster III is a versatile, large military transport aircraft utilized by the IAF for strategic and tactical airlift missions.
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