Q.what is a liquid propellant? what is the advantage of of using it? class xi chapter 2
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Advantages of liquid propellant rockets include the highest energy per unit of fuel mass, variable thrust, and a restart capability. Raw materials, such as oxygen and hydrogen are in abundant supply and a relatively easy to manufacture.
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In cryogenics , the temperature required to maintain a liquid state of any gases like hydrogen and oxygen is always below the room temperature. Hydrogen or oxygen gas becomes liquid at very low temperature. They are used in rockets
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