Consider the following statements in respect of a jet engine and a rocket : 1. A jet engine uses the surrounding air for its oxygen supply and so is unsuitable for motion in space. 2. A rocket carries its own supply of oxygen in the gas form, and fuel. Which of the statements given above is/are correct?

1. Statement 1: A jet engine works by taking in air from the surroundings, compressing it, mixing it with fuel, igniting it, and expelling the hot gases to generate thrust. It crucially uses the surrounding air for its oxygen supply (oxidizer). Since there is no air in space, a jet engine is unsuitable for motion in space. Statement 1 is correct. 2. Statement 2: A rocket works by expelling mass (hot gases) downwards. It carries its own supply of both fuel and oxidizer. The oxidizer (like liquid oxygen) is usually carried in liquid form, not gas form, due to density requirements, although some hybrid rockets might use gaseous oxidizers. The assertion that it carries oxygen specifically in gas form is generally inaccurate for typical large rockets. Statement 2 is incorrect.