The heat vaporization involves the changein enthalpy due

186. Solubility of a gas in a liquid at small
concentration can be represented by which law?

A. Henry’s law
B. Clausius-Clapeyron’s equation
C. Dal ton’s law
D. Roult’s law
Answer: A
187. A compound pressure gauge is used to measure: A. complex pressures
B. variable pressures
C. average pressure
D. positive and negative pressure
Answer: D
188. Which of the engine is used for fighter bombers?

194. PAST BOARD QUESTION

When the number of reheat stage in a reheat cycle is Increased, the average temperature: A. increases C. is constant
B. decreases D. is zero
Answer: A
195. PAST BOARD QUESTION
A temperature measurement in an ordinary thermometer which has constant specific humidity.

A. Absolute entropy C. Fugacity
B. Absolute Enthalpy D. Molar value
Answer: A
199. A graph of enthalpy versus entropy for steam.

A. Mollier diagram
B. Moody diagram
C. steam table
D. Maxwell diagram
Answer:A
200. The reaction of entertain in an accelerated body is called:
A. Kinetic reaction
B. Endothermic reaction
C. Kinematic reaction
D. Dynamic reaction
Answer: A

I. Has successive states through which the system

Passes
II. When reversed leaves no change in the system
III.When reversed leaves no change in the system or the sorroundings IV. States are passes through so quickly that the
Sorroundings do not change
Answer: D

A. On a p-v diagram, it can represent work done
B. On a t-s diagram, it can represent heat transferred
C. It is dependent on the path between states on thermodynamic equilibrium D. It represents values of p, v, t, and s between states that are path functions

Answer: D

216. Gauge pressure and absolute pressure differ
from each other by:
A. the system units
B. atmospheric pressure
C. the size of the gauge
D. nothing they mean the same thing
Answer: B

217. Each of the following are correct values of
standard atmospheric pressure except:
A. 1000 atm
B. 14.962 psia
C. 760 torr
D. 1013 mm Hg.

A. 1545 ft-lb/lbmol-R
B. 8.314 J/mol.K
C. 8314 kJ/mol.K
D. 8.314 kJ/mol.K
Answer: C

220. The following are all commonly quoted
values of standard temperatures and pressure except: A. 32 and 14.696 psia
B. 273.15 K and 101.325 kPa
C. 0 and 760 mm Hg.

energy and _______.

A. entropy
B. work flow
C. pressure
D. temperature
Answer: B

225. Stagnation enthalpy represents the enthalpy of a fluid when it is brought to rest ______.

A. isometrically
B. adiabatically
C. isothermally
D. disobarically
Answer: B

B. pressure
C. density
D. odulus of elasticity
Answer: D

229. A liquid boils when its vapor pressure equal
A. the gauge pressure
B. the critical pressure
C. the ambient pressuer
D. one standard atmosphere
Answer: C

of mass by a change in temperature
B. being different for constant pressure and cons-

constant temperature processes
C. a function of temperation
D. all of the above
Answer: D

A. subcooled liquid
B. wet vapor

C. saturated vapor
D. superheated vapor
Answer: D

241. Properties of a superheated vapor are given by: A. the perefect gas law
B. a superheated table
C. a one to relationship, such as the properties of saturation steam
D. a Viral of state
Answer: B

242, Properties of non-reacting gas mixture are given by:
A. geometric weighting
B. volumetric weighting
C. volumetric weighting for molecular weight density, and geometric weighting for all other properties except entropy
D. arithmetic average
Answer: C

increases in a system
B. The amount of useful energy is a system C. The amount of energy no longer available to the system
D. The heat required to cause a complete
conversion between two phases at a
constant temperature
Answer: B
246. Which of the following statements is not true for real A. Molecules occupy a volume not negligible in comparison to the total volume of gas
B. Real gases are subjected to attractive forces bet-

ween molecules(e.g., Van der Wall’s forces)
C. The law of corresponding states may be used
for real gasses
D. Real gases are found only rarely in nature
Answer: D