What is the difference between saturated steam and superheated steam?

• A. Saturated steam is in equilibrium with water at a given pressure; superheated steam is steam heated above the saturation temperature at the same pressure, with no liquid present.
• B. Saturated steam is hotter than superheated steam.
• C. Superheated steam contains liquid water droplets.
• D. Saturated steam exists only at room temperature.

Answer: (A)

The main idea is how steam behaves at a given pressure relative to its boiling point. At that pressure, water has a specific saturation temperature where liquid and vapor are in equilibrium. Steam at this point is saturated because it’s in balance with liquid water. If you keep the pressure the same but heat the steam further, its temperature rises above the saturation temperature and you get superheated steam, which has no liquid water present. This distinction matters because saturated steam contains latent heat and can condense back to liquid, while superheated steam acts more like a dry gas with higher energy.

The other statements don’t fit: saturated steam isn’t hotter than superheated steam—superheated steam is hotter; superheated steam doesn’t contain liquid droplets; and saturated steam isn’t restricted to room temperature.