Which one of the following statement is correct for a superheated vapo...

P
1, T
1 represent the state of superheated vapours.
Let P
0 be the saturation pressure at T
1 temperature.
Conclusions (According to options)
A. Pressure will be less than saturation Pressure at given temperature.
B. Temperature will be higher than saturation temperature at given pressure (superheated state).
C. Volume is more than the volume of the saturated vapour at a given temperature (Volume is more in superheated state at same temperature).
D. Its enthalpy is higher than enthalpy of the saturated vapour at a given pressure (superheated vapours have more enthalpy than saturated vapours).
Hence only option A is correct.
View all questions of this test
Which one of the following statement is correct for a superheated vapo...
Explanation:
A superheated vapor is a vapor that is at a temperature higher than its saturation temperature for a given pressure. It is different from a saturated vapor, which is a vapor that is at its saturation temperature for a given pressure.
The correct statement for a superheated vapor is:
a) Its pressure is less than the saturation pressure at a given temperature.
This statement is true because a superheated vapor is at a temperature higher than its saturation temperature, which means that it has more energy than a saturated vapor. This extra energy allows the vapor to expand and its pressure to decrease, while still remaining in the vapor phase.
To further understand this, let's look at the other options:
b) Its temperature is less than the saturation temperature at a given pressure.
This statement is incorrect because a superheated vapor is at a temperature higher than its saturation temperature for a given pressure.
c) Its volume is less than the volume of the saturated vapor at a given temperature.
This statement is also incorrect because a superheated vapor has a larger volume than a saturated vapor at the same temperature and pressure.
d) Its enthalpy is less than enthalpy of the saturated vapor at a given pressure.
This statement is also incorrect because a superheated vapor has a higher enthalpy than a saturated vapor at the same pressure.
In summary, option A is the correct statement for a superheated vapor because it has a lower pressure than a saturated vapor at the same temperature.