A. V1 V2

B. V2/V1

D. V1.V2

A. Adiabatic

C. Isentropic

D. Isothermal

A. The net change in entropy in any reversible cycle is always zero

C. The entropy of the system as a whole in an irreversible process increases

D. The entropy of the universe tends to a maximum

A. Increase

B. Increase or decrease; depends on the particular reaction

D. Decrease

A. Increase the total pressure and hence shift the equilibrium towards the right

B. Increase the partial pressure of I2

C. Increase the partial pressure of H2

B. put of work

C. Compression ratio of an Otto engine is comparatively higher than a diesel engine

D. Otto engine efficiency decreases with the rise in compression ratio, due to decrease in work

E. io</strong>

F. duced per quantity of heat

B. -1.87

C. 1.26

D. 3.91

A. Reverse Carnot cycle

B. Ordinary vapour-compression cycle

D. Vapour-compression process with a reversible expansion engine

A. rogen is 4

B. Degree of freedom of a system containing a gaseous mixture of helium, carbon dioxide and

D. For a two phase system in equilibrium made up of four non-reacting chemical species, the

E. ber of degrees of freedom is 4

F. orisation and sublimation</strong>

A. Negative

B. Indeterminate

D. Positive

B. 1

C. 0

D. 3

A. Specific volume

B. Temperature

C. Pressure

A. More than

B. Same as

C. Half

B. Doubled

C. Halved

D. One fourth of its original value

B. Decreased COP

C. Same COP

D. Increased or decreased COP; depending upon the type of refrigerant

B. None of these

C. Momentum

D. Mass

A. 2

B. 0

C. 3

A. Decreases

B. Remains unchanged

C. Decreases linearly

A. Vaporisation

B. Sublimation

D. Melting

A. Vapour obeys the ideal gas law and the latent heat of vaporisation is constant

C. Volume in the liquid state is negligible compared with that in the vapour state

D. Vapour pressure is relatively low and the temperature does not vary over wide limits

A. First fall and then rise

B. Decrease

C. Remain unchanged

A. Always greater than one

B. Same at the same reduced temperature

C. Same at the same reduced pressure

A. None of these

B. Adiabatic

C. Reversible

A. Compressibility

C. Co-efficient of thermal expansion

D. None of these

A. 4.5

C. 8.5

D. 0.5

A. None of these

B. Isobarically

C. Isothermally

A. Low pressure and high temperature

C. High temperature and high pressure

D. Low pressure and low temperature

A. Isochoric

C. Adiabatic

D. Isobaric

A. Boiling point of liquids

C. Melting point of wax

D. None of these

A. High temperature

B. Low pressure

C. Low temperature only

A. The values of (?P/?V)T and (?2P/?V2)T are zero for a real gas at its critical point

B. During a reversible adiabatic process, the entropy of a substance remains constant

C. Heat transferred is equal to the change in the enthalpy of the system, for a constant pressure,

D. #NAME?

F. ides the source & sink temperatures</strong>

A. Pressure

C. All A , B. and C

D. Temperature

A. 2

B. 1

D. 3

A. 3

C. 2

D. 0

B. Joule-Thomson co-efficient

C. Specific heat at constant pressure (Cp)

D. Specific heat at constant volume (CV)

A. In case of an ideal gas, the fugacity is equal to its pressure.

B. ponent.

D. In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the

E. Activity co-efficient is dimensionless.

A. None of these

B. Gibbs-Helmholtz

C. Gibbs-Duhem

A. hanged

B. In a closed system, the energy can be exchanged with the surrounding, while matter cannot be

D. Work is a state function

E. Entropy and enthalpy are path functions

A. Finds no application in gas-liquid equilibria involved in distillation

B. perature and pressure</strong>

C. None of these

D. Applies only to binary systems

A. 0.75

B. 0.25

C. 1

A. Free energy change for a spontaneous process is negative

B. The expansion of a gas in vacuum is an irreversible process

C. Entropy change for a reversible adiabatic process is zero

A. uid and vapour phases at its critical point

B. Surface tension of a substance vanishes at critical point, as there is no distinction between

D. Change of internal energy is negative for exothermic reactions

E. Entropy of a system decreases with the evolution of heat

A. Molar concentration

B. Quantity (i.e. number of moles)

D. Neither A. nor B

A. None of these

B. State

C. Point

B. None of these

C. TR/(T1 TR) (T1 T2)/T1

D. TR/(T2 TR) T1/(T1 T2)

A. work needed

B. Work alone cannot bring out such a change of state

C. More information is needed to conclude anything about the path dependence or otherwise of

D. The amount of work needed is independent of path

A. Data insufficient; cant be computed

B. 580

D. 640

A. System (of partially miscible liquid pairs), in which the mutual solubility increases with rise

B. temperature, are said to possess an upper consolute temperature

C. Systems, in which the mutual solubility increases with decrease in temperature, are said to

D. sess lower consolute temperature

E. Nicotine-water system shows both an upper as well as a lower consolute temperature,

F. lying that they are partially miscible between these two limiting temperatures

A. perature at which heat is rejected increases

C. In a refrigerator, work required decreases as the temperature of the refrigerator and the

D. One ton of refrigeration is equivalent to the rate of heat absorption equal to 3.53 kW

E. Refrigeration cycle is normally represented by a temperature vs. entropy plot

A. Heat of reaction at constant volume is equal to the change in internal energy

B. Enthalpies of all elements in their standard states are assumed to be zero

D. Combustion reactions are never endothermic in nature