4

Boyle

Inversion

Critical

Reduced

A. Boyle

4

Minimum

Zero

Maximum

Indeterminate

4

# An irreversible process

Is the analog of linear frictionless motion in machines

Is an idealised visualisation of behaviour of a system

Yields the maximum amount of work

Yields an amount of work less than that of a reversible process

4

None of these

4

Water

Air

Evaporative

Gas

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

# The quantitative effect of temperature on chemical equilibrium is given by the

Vant-Hoff equation

Le-Chatelier's principle

Arrhenius equation

None of these

4

# In the reaction; N2 + O2 2NO, increasing the pressure will result in

Shifting the equilibrium towards right

Shifting the equilibrium towards left

No change in equilibrium condition

None of these

4

Positive

Negative

Zero

Infinity

4

# Which is not constant for an ideal gas?

(∂P/∂V)T

(∂V/∂T)P

(∂P/∂V)V

All (A), (B) & (C)

4

# The equilibrium constant for a chemical reaction at two different temperatures is given by

Kp2/Kp1 = - (ΔH/R) (1/T2 - 1/T1)

Kp2/Kp1 = (ΔH/R) (1/T2 - 1/T1)

Kp2/Kp1 = ΔH (1/T2 - 1/T1)

Kp2/Kp1 = - (1/R) (1/T2 - 1/T1)

4

SO2

NH3

CCl2F2

C2H4Cl2

4

More than

Less than

Equal to

Not related to

4

Boyle

Inversion

Critical

Reduced

4

Molecular size

Temperature

Volume

Pressure

4

# Entropy of the system decreases, when

Snow melts into water

A gas expands spontaneously from high pressure to low pressure

Water is converted into ice

Both (B) & (C)

4

0.5

3.5

4.5

8.5

4

x

x + 1

x + 2

x + 3

4

# The heat capacities for the ideal gas state depend upon the

Pressure

Temperature

Both (A) & (B)

Neither (A) nor (B)

4

Isometric

Isentropic

Isothermal

4

# An ideal liquid refrigerant should

Not have a sub-atmospheric vapour pressure at the temperature in the refrigerator coils

Not have unduly high vapour pressure at the condenser temperature

Both (A) and (B)

Have low specific heat

4

Gibbs-Duhem

Gibbs-Helmholtz

Maxwell's

None of these

4

# Internal energy is equal to the heat absorbed in case of a/an __________ process.

Constant volume

Polytropic

Constant pressure

4

T

√T

T2

1/√T

4

R loge 4

R log10 4

Cv log10 4

Cv loge 4

4

(T2 - T1)/T2

(T2 - T1)/T1

(T1 - T2)/T2

(T1 - T2)/T1

4

Isochoric

Isobaric

Isothermal

4

Cv.dT

Cp.dT

∫ Cp.dT

∫ Cv.dT

4

# Maxwell's relation corresponding to the identity, dH = dS = Vdp + Σμi dni is

(∂T/∂V)S, ni = -(∂P/∂S)V, ni

(∂S/∂P)T, ni = (∂V/∂T)P, ni

(∂S/∂V)T, ni = (∂P/∂T)V, ni

(∂T/∂P)S, ni = (∂V/∂S)P, ni

4

0.25

0.5

0.75

1