Multiple choice

In Titan ballistic missile, the propellant used is

  1. only NH2NH2

  2. only N2O4

  3. mixture of NH2NH2 and N2O4

  4. nitroglycerine
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Titan II ballistic missile used a hypergolic propellant combination: unsymmetrical dimethylhydrazine (UDMH, a hydrazine derivative) as fuel and nitrogen tetroxide (N2O4) as oxidizer. Hydrazine (NH2NH2) and N2O4 ignite spontaneously on contact, which is critical for reliable missile ignition. The question's wording 'mixture of NH2NH2 and N2O4' is close enough to the correct hypergolic concept to accept as the intended answer, though Titan specifically used UDMH rather than pure hydrazine.

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