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What is the ideal propellant used for single-stage rockets?

What is the ideal propellant used for single-stage rockets? Correct Answer Liquid propellant

Usually a single stage rocket is not used because of low payload carrying capacity. But it can be used for LEO when the mass of the structure is less ad propellant efficiency is high. This can be done by using liquid propellants such as liquid hydrogen ad liquid oxygen as the propellant performace is high.

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