What refers to the state at which
liquid and gaseous phases are
indistinguishable?
 a. Triple point
 b. Critical point
 c. Boiling point
 d. Pour point

1 Answer

Answer :

Critical point

Related questions

Description : What is the unique state at which solid, liquid and gaseous phase can go co-exist in equilibrium?  a. Triple point  b. Critical point  c. Boiling point  d. Pour point

Last Answer : Triple point

Description : What refers to the point at which the saturated liquid and saturated vapor states are the same or identical?  A. Triple point  B. Inflection point  C. Maximum point  D. Critical point

Last Answer : Maximum point

Description : What is the amount of heat needed to turn 1kg of the substance at its boiling point from the liquid to the gaseous state?  A. Heat of fusion  B. Heat of vaporation  C. Heat of condensation  D. Heat of fission

Last Answer : Heat of vaporation

Description : What is the state at which all three phases of water coexist in equilibrium?  A. Tripoint of water  B. Triple point of water  C. Triple phase point of water  D. Phase point of water

Last Answer : Triple point of water

Description : __________________ represents the highest pressure and highest temperature at which liquid and vapor can coexist in equilibrium.  a) Critical Point  b) Boiling Point  c) Quality Point  d) None of the above

Last Answer : Critical Point

Description : The temperature at which the vapor pressure exactly equals one atm is called _________.  a. boiling temperature  b. normal boiling point  c. triple point  d. point of infliction

Last Answer : normal boiling point

Description : _________ is the temperature to which the air must be cooled, at constant pressure, to produce saturation.  a. relative humidity  b. triple point temperature  c. dew point  d. critical point

Last Answer : dew point

Description : The temperature at which both liquid and gas phases are identical, is called the __________ point. (A) Critical (B) Triple (C) Freezing (D) Boiling

Last Answer : (A) Critical

Description : What refers to the heat needed to change the temperature of the substances without changing its phases?  a. Latent heat  b. Sensible heat  c. Specific heat  d. entropy

Last Answer : Sensible heat

Description : _________________ is the name given to a gaseous phase that is in contact with the liquid phase, or that is in the vicinity of a state where some of it might be condensed.  a) Vapor  b) Saturated Vapor  c) Superheated Vapor  d) Wet Vapor

Last Answer : Vapor

Description : __________________ is a liquid at the saturations which has temperature equal to the boiling point corresponding to the existing pressure.  a. Saturation Temperature  b. Sub cooled Liquid  c. Compressed Liquid  d. Saturated Liquid

Last Answer : Saturated Liquid

Description : The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and ... is called  A. cracking  B. carbonisation  C. fractional distillation  D. full distillation

Last Answer : Answer: C

Description : Fuels that may classified conveniently in solid, liquid and gaseous.  a. Unleaded fuel  b. Diesel fuel  c. Fossil fuel  d. All of the above

Last Answer : Fossil fuel

Description : The compressibility factor, x, is used for predicting the behavior of nonideal gases. How is the compressibility ty factor defined relative to an ideal gas? (subscript c refers to critical value)  A. ... compressibility factor, x, is an dimensionless constant given by pV=zRT. Therefore z = pV / RT

Last Answer : z = pV/ RT

Description : What temperature scale is identical to the Kelvin scale?  A. Ideal gas temperature scale  B. Ideal temperature scale  C. Absolute gas temperature scale  D. Triple point temperature scale

Last Answer : Ideal gas temperature scale

Description : The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) boiling point (b) melting point (c) triple point (d) freezing point

Last Answer : Ans:(c)

Description : The point at which the solid, liquid and gaseous forms of a substance co-exist is called its (a) Boiling point (b) Melting point (c) Triple point (d) Freezing point

Last Answer : Ans:(c)

Description : The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point. (A) Freezing (B) Triple (C) Boiling (D) Boyle

Last Answer : B) Triple

Description : At __________ point, all the three phases (i.e. solid, liquid and gas) co exist. (A) Eutectic (B) Triple (C) Plait (D) Critical

Last Answer : (B) Triple

Description : What refers to a liquid whose temperature is lower than saturation temperature corresponding to the existing pressure?  a. Subcooled liquid  b. Saturated liquid  c. Pure liquid  d. Compressed liquid

Last Answer : Subcooled liquid

Description : How many independent properties are required to completely fix the equilibrium state of a pure gaseous compound?  a. 4  b. 3  c. 2  d. 1

Last Answer : 2

Description : How many independent properties are required to completely fix the equilibrium state of a pure gaseous compound?  A. 4  B. 3  C. 2  D. 1

Last Answer : 2

Description : Heat engine deriving its power from the energy liberated by the explosion of a mixture of some hydrocarbon, in a gaseous or vaporized form.  a. Dual Combustion Engine  b. Internal Combustion Engine  c. External Combustion Engine  d. None of the above

Last Answer : Internal Combustion Engine

Description : A plot of pressure vs. temperature for a given substance showing the various phases possible for that particular substance.  a. Phase diagram  b. P-T diagram  c. Wein Diagram  d. Histogram

Last Answer : Phase diagram

Description : If a system involves two phases, it is in ______ equilibrium when the mass of each phase reaches an equilibrium level and stays there.  A. Chemical  B. Thermal  C. Mechanical  D. Phase

Last Answer : Phase

Description : What is the temperature when water and vapor are in equilibrium with the atmospheric pressure?  a. Ice point  b. Steam point  c. Critical point  d. Freezing point

Last Answer : Steam point

Description : What is the temperature when water and vapor are in the equilibrium with the atmospheric pressure?  a. Ice point  b. Steam point  c. Critical point  d. Freezing point

Last Answer : Steam point

Description : What is the amount of heat needed to turn 1 kg of the substance at its melting point from the solid to liquid state?  A. Heat of fusion  B. Heat of vaporation  C. Heat of condensation  D. Heat of fission

Last Answer : Heat of fusion

Description : Occurs when the vapor pressure equals the atmospheric pressure  a. Boiling  b. Melting  c. Freezing  d. Vaporizing

Last Answer : Boiling

Description : Boiling temperature of a material is dependent on its _________.  a. volume  b. power  c. heat  d. pressure

Last Answer : pressure

Description : The boiling of water into steam in an open container is an example of a/an _________ process.  a. adiabatic  b. isochoric  c. isobaric  d. zero work

Last Answer : isobaric

Description : The “equation of state” refers to any equation that relates the ______ of the substance.  A. Pressure and temperature  B. Pressure, temperature and specific weight  C. Temperature and specific weight  D. Pressure, temperature and specific volume

Last Answer : Pressure, temperature and specific volume

Description : What refers to the series of state through which a system passes during a process?  A. Path  B. Phase  C. Cycle  D. Direction

Last Answer : Path

Description : What refers to any change that a system undergoes from one equilibrium state to another equilibrium state?  A. Process  B. Path  C. Phase  D. Cycle

Last Answer : Process

Description : Which of the following statement is incorrect?  A. The liquid fuels consist of hydrocarbons.  B. The liquid fuels have higher calorific value than solid fuels.  C. The solid fuels have higher calorific value than liquid fuels.  D. A good fuel should have low ignition point.

Last Answer : Answer: C

Description : A control volume refers to what?  a. A fixed region in space  b. A reversible process  c. an isolated system  d. a specified mass

Last Answer : A fixed region in space

Description : What refers to a system in which there is a flow of mass across its boundaries?  a. Open system  b. Closed system  c. Isolated system  d. Non-flow system

Last Answer : Open system

Description : What refers to the series of states through which a system passes during the process?  a. path  b. quasi- static steps  c. reversibility moves  d. irreversibility moves

Last Answer : path

Description : What refers to the thermodynamic properties which are independent on the amount of the substance present?  a. Extensive property  b. Intensive properties  c. Reversible properties  d. Irreversible properties

Last Answer : Intensive properties

Description : What refers to the thermodynamic properties which are dependent on the amount of the substance present?  a. Extensive property  b. Intensive properties  c. Reversible properties  d. Irreversible properties

Last Answer : Extensive property

Description : A Thermodynamic Term That refers to any fixed region in a space  a. Control Volume  b. Volume  c. Density  d. Natural Gas

Last Answer : Control Volume

Description : What refers to the minimum temperature at which combustion can be sustained?  A. Burn temperature  B. Kindle temperature  C. Spark temperature  D. Ignition temperature

Last Answer : Ignition temperature

Description : What refers to the amount of heat removed from the cooled space in BTS’s for 1 watt-hour of electricity consumed?  A. Cost efficiency rating  B. Energy efficiency rating  C. Coefficient of performance  D. Cost of performance

Last Answer : Energy efficiency rating

Description : What refers to the rate of thermal radiation emitter per unit area of a body?  A. Thermal conductivity  B. Absorptivity  C. Emissivity  D. Emissive power

Last Answer : Emissive power

Description : What refers to the heating of the earth’s atmosphere not caused by direct sunlight but by infrared light radiated by the surface and absorbed mainly by atmospheric carbon dioxide?  A. Greenhouse effect  B. Global warming  C. Thermal rise effect  D. Ozone effect

Last Answer : Greenhouse effect

Description : What refers to the transfer of energy between a solid surface and the adjacent fluid that is in motion?  A. Conduction  B. Convection  C. Radiation  D. Electrification

Last Answer : Convection

Description : What refers to the amount of energy absorbed or released during a phase-change process?  A. Molar heat  B. Latent heat  C. Vaporization heat  D. Condensation heat

Last Answer : Latent heat

Description : What refers to the pressure at which a pure substance changes phase at a given temperature?  A. Equilibrium pressure  B. Saturation pressure  C. Superheated pressure  D. Subcooled pressure

Last Answer : Saturation pressure

Description : What refers to the temperature at which a pure substance changes phase at a given pressure?  A. Equilibrium temperature  B. Saturation temperature  C. Superheated temperature  D. Subcooled temperature

Last Answer : Saturation temperature

Description : What refers to the measure of the disorder present in a given substance or system?  A. Enthalpy  B. Entropy  C. Heat capacity  D. Molar heat

Last Answer : Entropy