Question

Fuels used in rockets are called _____________.

Answer 1

1. The fuels used by rockets are cryogenic gases that can be liquified at low temperatures.
2. Such a gas that is commonly used is liquid hydrogen and liquid oxygen.
3. These gases are used because when these fuels are burnt they are burnt with high intensity and produce a large amount of energy which is useful in the working of rockets.
4. Therefore, these fuels are named propellants.

Hence, Rockets use a fuel called propellants.