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Which of the following is having the highest detonation velocity ?

  • A.HMX
  • B.PETN
  • C.TNT
  • D.RDX

Answer: A

The highest detonation velocity belongs to HMX.

Approximate detonation velocities at full density are:

  • HMX (octogen): about 9,100 m/s
  • RDX: about 8,750 m/s
  • PETN: about 8,400 m/s
  • TNT: about 6,900 m/s

HMX is the denser eight-membered ring relative of RDX, and its higher density and energy give it the greatest velocity of the four, which is why it is used in high-performance charges. TNT is the slowest of the group.

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