Question

Match List I with List II:

LIST I	LIST II
A. Subcooled water	I. 1 bar and 134°C
B. Superheated steam	II. Dryness fraction = 1 and 100°C
C. Steam at critical state	III. 20°C and 1.01325 bar
D. Saturated steam	IV. 374.15°C and 220.8 bar

Choose the correct answer from the options given below:

• A. (A)-(I), (B)-(II), (C)-(III),(D)-(IV)
• B. (A)-(II), (B)-(III),(C)-(I),(D)-(IV)
• C. (A)-(III), (B)-(II),(C)-(IV),(D)-(I)
• D. (A)-(III), (B)-(I), (C)-(IV),(D)-(II)

Hint:

When working with thermodynamic properties of water remember that Subcooled water exists below its saturation point typically at lower pressure and temperature Superheated steam is above the saturation temperature Critical state is where both temperature and pressure reach critical points Saturated steam is at the boiling point with a dryness fraction of 1

Answer 1

The Correct Option is D

The correct matching between the characteristics of water and their respective state properties is as follows:

• Subcooled water: Corresponds to the state of water with a temperature lower than the saturation temperature, hence the property is (III) 20°C and 1.01325 bar.
• Superheated steam: Corresponds to a high temperature and low pressure, matching (I) 1 bar and 134°C.
• Steam at the critical state: Is where both the pressure and temperature are at critical values, so it corresponds to (IV) 374.15°C and 220.8 bar.
• Saturated steam: Where the water is at its boiling point with a dryness fraction of 1, corresponds to (II) dryness fraction = 1 and 100°C.