Which of the following represents liquid propellants?
Correct answer: B. N2O4 + UDMH
- A. N2O4 + acrylic rubber
- B. N2O4 + UDMH
- C. Polybutadiene + ammonium perchlorate
- D. Nitroglycerine + nitrocellulose
Explanation
A liquid propellant system requires a liquid fuel and a liquid oxidizer. Unsymmetrical dimethylhydrazine (UDMH) is a liquid fuel, and nitrogen tetroxide (N₂O₄) is a liquid oxidizer. This combination is a common hypergolic (ignites on contact) liquid propellant
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Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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