Question

Specific heat of saturated steam is:

• A. Positive
• B. Negative
• C. Zero
• D. 1 cal/gm-degree

Hint:

During phase transitions, the temperature remains constant, so the specific heat of saturated steam is zero.

Answer 1

The Correct Option is C

For saturated steam, any heat added at constant pressure results in a phase change rather than a temperature increase. The definition of specific heat is:
\[ C_P = \left( \frac{dQ}{dT} \right)_P \] Since temperature does not change during phase transition:
\[ C_P = 0 \] Thus, the correct answer is: