(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
Ans-b
Explanation
CL-20, or Octa-Nitro-Cubane, is a Nitramine class of explosive 15 times as powerful as HMX, His/Her Majesty Explosive or High Melting Explosive or Octogen.
CL-20, so named after the China Lake facility of the Naval Air Weapons Station in California, US, was first synthesized by Dr. Arnold Nielson in 1987. HMX dates from 1941
LLM-105 was first produced at Lawrence Livermore National Laboratory in 1995. It can withstand high temperatures without blowing up, making it a candidate for warheads used in hypersonic missiles, which fly and manoeuvre at more than five times the speed of sound.
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