4

# Clausius-Clapeyron equation is applicable to __________ equilibrium processes.

Solid-vapor

Solid-liquid

Liquid-vapor

All (A), (B) and (C)

D. All (A), (B) and (C)

4

# Throttling process is a/an __________ process.

Reversible and isothermal

Irreversible and constant enthalpy

Reversible and constant entropy

Reversible and constant enthalpy

4

F = E - TS

F = H - TS

F = H + TS

F = E + TS

4

# The principle applied in liquefaction of gases is

Joule-Thomson effect

Both (A) and (B)

Neither (A) nor (B)

4

0

1

2

3

4

Zero

Negative

More than zero

Indeterminate

4

dQ = dE + dW

dQ = dE - dW

dE = dQ + dW

dW = dQ + dE

4

# Which of the following equations is used for the prediction of activity co-efficient from experiments?

Van Laar equation

Margules equation

Wilson's equation

All (A), (B) and (C)

4

0

1

2

3

4

# When a gas is subjected to adiabatic expansion, it gets cooled due to

Decrease in velocity

Decrease in temperature

Decrease in kinetic energy

Energy spent in doing work

4

# Which of the following is true for Virial equation of state?

Virial co-efficients are universal constants

Virial co-efficients 'B' represents three body interactions

Virial co-efficients are function of temperature only

For some gases, Virial equations and ideal gas equations are the same

4

# Pick out the correct statement:

In an isothermal system, irreversible work is more than reversible work

Under reversible conditions, the adiabatic work is less than isothermal work

Heat, work, enthalpy and entropy are all 'state functions'

Matter and energy cannot be exchanged with the surroundings in a closed system

4

Enthalpy

Entropy

Pressure

None of these

4

# The expression, nRT ln(P1/P2), is for the __________of an ideal gas.

Compressibility

Work done under isothermal condition

Co-efficient of thermal expansion

4

Ideal

Real

Isotonic

None of these

4

Isochoric

Isobaric

Isothermal

4

Isolated

Open

Insulated

Closed

4

# Compressibility factor of a gas is

Not a function of its pressure

Not a function of its nature

Not a function of its temperature

Unity, if it follows PV = nRT

4

# At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero. This follows from the

Third law of thermodynamics

Second law of thermodynamics

Nernst heat theorem

Maxwell's relations

4

3

2

1

0

4

H = E - PV

H = F - TS

H - E = PV

None of these

4

# The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances. This is the

Lewis-Randall rule

Statement of Van't Hoff Equation

Le-Chatelier's principle

None of these

4

# For a stable phase at constant pressure and temperature, the fugacity of each component in a binary system __________ as its mole fraction increases.

Decreases

Increases

Remain same

Decreases linearly

4

2

0

3

1

4

# Critical temperature is defined as the temperature above which a gas will

Not liquify (barring exceptions)

Immediately liquify

Never liquify however high the pressure may be

None of these

4

# Melting of ice exemplifies a/an

Endothermic reaction

Exothermic reaction

Process involving a chemical reaction

4

Isothermal

Isentropic

Polytropic

4

R loge 4

R log10 4

Cv log10 4

Cv loge 4

4

Boyle

Inversion

Critical

Reduced

4

< 0

> 0

= 0

None of these