Multiple choice

Which of the following compounds is considered as a good prospect for rocket or jet fuel?

  1. Pentaborane

  2. Perchloric acid

  3. Perchloryl fluoride

  4. Peroxymonosulfuric acid
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A Correct answer
Explanation

Pentaborane is a colourless mobile liquid with a strong pungent odour (resembling garlic, acetylene or sour milk). In the 1950s it was considered as a good prospect for rocket or jet fuel. Its chemical structure is that of five atoms of boron compounded with nine atoms of hydrogen (B5H9).

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