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Which one of the following statements is correct for a superheated vapour?

  1. Its pressure is less than the saturation pressure at a given temperature
  2. Its temperature is less than the saturation temperature at a given pressure
  3. Its volume is less than the volume of the saturated vapour at a given temperature
  4. Its enthalpy is less than the enthalpy of the saturated vapour at a given pressure
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