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

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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

A. Lewis-Randall rule

B. Statement of Van't Hoff Equation

C. Le-Chatelier's principle

D. None of these

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The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nC_v ln (T₂/T₁) is valid for

A. Reversible isothermal volume change

B. Heating of a substance

C. Cooling of a substance

D. Simultaneous heating and expansion of an ideal gas

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The reaction A (l) → R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The numbers of degrees of freedom are:

A. 1

B. 2

C. 3

D. 0

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Chemical potential of ith component of a system is given by

A. μ_i = (∂F/∂n_i)_{T, P, ni}

B. μ_i = (∂A/∂n_i)_{T, P, ni}

C. μ_i = (∂F/∂n_i)_{T, P}

D. μ_i = (∂A/∂n_i)_{T, P}

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Enthalpy of a gas depends upon its

A. Temperature

B. Mass

C. Volume

D. Pressure

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The acentric factor of a materical, 'ω', is defined as ω = -log₁₀(P_r^sat)T_r^-1 = 0.7, where, P_r^sat = reduced vapor pressure, T_r = reduced temperature. The value of acentric factor is always

A. > 2

B. < 1

C. > 1

D. < 3

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If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

A. Volume

B. Enthalpy

C. Both (A) & (B)

D. Neither (A) nor (B)

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Fugacity is a measure of the

A. Escaping tendencies of the same substance in different phases of a system

B. Relative volatility of a mixture of two miscible liquids

C. Behaviour of ideal gases

D. None of these

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High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:

A. Δ H = 0 and ΔS = 0

B. Δ H ≠ 0 and ΔS = 0

C. Δ H ≠ 0 and ΔS ≠ 0

D. Δ H = 0 and ΔS ≠ 0

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In the ammonia synthesis reaction, N₂ + 3H₂ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

A. High temperature

B. Low pressure

C. Low temperature only

D. Both low temperature and high pressure

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Pick out the Clausius-Clapeyron equation from the following:

A. dP/dT = ΔH/TΔV

B. ln P = - (ΔH/RT) + constant

C. ΔF = ΔH + T [∂(ΔF)/∂T]_P

D. None of these

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In which of the following reaction equilibrium, the value of equilibrium constant K_p will be more than is K_c?

A. 2HI H₂ + I₂

B. N₂O₄ 2NO₂

C. 2SO₂ + O₂ 2SO₃

D. None of these

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Sublimation temperature of dry ice (solid CO₂) is __________ °C.

A. -273

B. 0

C. -78

D. 5

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Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole.

A. 0

B. 273

C. 25

D. None of these

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Internal energy change of a system over one complete cycle in a cyclic process is

A. Zero

B. +ve

C. -ve

D. Dependent on the path

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Work done in case of free expansion is

A. Indeterminate

B. Zero

C. Negative

D. None of these

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At absolute zero temperature, the __________ of the gas is zero.

A. Pressure

B. Volume

C. Mass

D. None of these

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Melting of wax is accompanied with __________ in entropy.

A. Increase

B. Decrease

C. No change

D. None of these

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Gibbs-Duhem equation

A. States that n₁dμ₁ + n₂dμ₂ + ....n_jdμ_j = 0, for a system of definite composition at constant temperature and pressure

B. Applies only to binary systems

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

D. None of these

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Which law of the thermodynamics provides basis for measuring the thermodynamic property?

A. First law

B. Zeroth law

C. Third law

D. Second law

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The chemical potential of any constituent of an ideal solution depends on the __________ of the solution.

A. Temperature

B. Pressure

C. Composition

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

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The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

A. Less than

B. Equal to

C. More than

D. Either (B) or (C); depends on the type of alloy

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d_W and d_q are not the exact differential, because q and W are

A. State functions

B. Path functions

C. Intensive properties

D. Extensive properties

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In polytropic process (PVⁿ = constant), if n = 1; it means a/an __________ process.

A. Adiabatic

B. Reversible

C. Isothermal

D. None of these

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Henry's law is closely obeyed by a gas, when its __________ is extremely high.

A. Pressure

B. Solubility

C. Temperature

D. None of these

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Pick out the correct equation relating 'F' and 'A'.

A. F = A + PV

B. F = E + A

C. F = A - TS

D. F = A + TS

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Compressibility factor of a gas is

A. Not a function of its pressure

B. Not a function of its nature

C. Not a function of its temperature

D. Unity, if it follows PV = nRT

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A reasonably general expression for vapourliquid phase equilibrium at low to moderate pressure is φ_i y_i P = Y_i x_if_i° where, Φ is a vapor fugacity component, Y_i is the liquid activity co-efficient and f_i° is the fugacity of the pure component i. the K_i value (Y_i = K_i x_i) is therefore, in general a function of

A. Temperature only

B. Temperature and pressure only

C. Temperature, pressure and liquid composition x_i only

D. Temperature, pressure, liquid composition x_i and vapour composition yi

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After throttling, gas temperature

A. Decreases

B. Increases

C. Remain same

D. May increase or decrease; depends on the nature of the gas

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

A. Shifting the equilibrium towards right

B. Shifting the equilibrium towards left

C. No change in equilibrium condition

D. None of these

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In an ideal gas mixture, fugacity of a species is equal to its

A. Vapor pressure

B. Partial pressure

C. Chemical potential

D. None of these

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Accepted Answer

D. None of these

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

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nC_v ln (T₂/T₁) is valid for

The reaction A (l) → R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The numbers of degrees of freedom are:

Chemical potential of ith component of a system is given by

Enthalpy of a gas depends upon its

The acentric factor of a materical, 'ω', is defined as ω = -log₁₀(P_r^sat)T_r^-1 = 0.7, where, P_r^sat = reduced vapor pressure, T_r = reduced temperature. The value of acentric factor is always

If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

Fugacity is a measure of the

High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:

In the ammonia synthesis reaction, N₂ + 3H₂ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

Pick out the Clausius-Clapeyron equation from the following:

In which of the following reaction equilibrium, the value of equilibrium constant K_p will be more than is K_c?

Sublimation temperature of dry ice (solid CO₂) is __________ °C.

Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole.

Internal energy change of a system over one complete cycle in a cyclic process is

Work done in case of free expansion is

At absolute zero temperature, the __________ of the gas is zero.

Melting of wax is accompanied with __________ in entropy.

Gibbs-Duhem equation

Which law of the thermodynamics provides basis for measuring the thermodynamic property?

The chemical potential of any constituent of an ideal solution depends on the __________ of the solution.

The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

d_W and d_q are not the exact differential, because q and W are

In polytropic process (PVⁿ = constant), if n = 1; it means a/an __________ process.

Henry's law is closely obeyed by a gas, when its __________ is extremely high.

Pick out the correct equation relating 'F' and 'A'.

Compressibility factor of a gas is

After throttling, gas temperature

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

In an ideal gas mixture, fugacity of a species is equal to its

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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

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for

The reaction A (l) → R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The numbers of degrees of freedom are:

Chemical potential of ith component of a system is given by

Enthalpy of a gas depends upon its

The acentric factor of a materical, 'ω', is defined as ω = -log10(Prsat)Tr-1 = 0.7, where, Prsat = reduced vapor pressure, Tr = reduced temperature. The value of acentric factor is always

If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

Fugacity is a measure of the

High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:

In the ammonia synthesis reaction, N2 + 3H2 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by

Pick out the Clausius-Clapeyron equation from the following:

In which of the following reaction equilibrium, the value of equilibrium constant Kp will be more than is Kc?

Sublimation temperature of dry ice (solid CO2) is __________ °C.

Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole.

Internal energy change of a system over one complete cycle in a cyclic process is

Work done in case of free expansion is

At absolute zero temperature, the __________ of the gas is zero.

Melting of wax is accompanied with __________ in entropy.

Gibbs-Duhem equation

Which law of the thermodynamics provides basis for measuring the thermodynamic property?

The chemical potential of any constituent of an ideal solution depends on the __________ of the solution.

The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

dW and dq are not the exact differential, because q and W are

In polytropic process (PVn = constant), if n = 1; it means a/an __________ process.

Henry's law is closely obeyed by a gas, when its __________ is extremely high.

Pick out the correct equation relating 'F' and 'A'.

Compressibility factor of a gas is

After throttling, gas temperature

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

In an ideal gas mixture, fugacity of a species is equal to its

Also checkout

The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nC_v ln (T₂/T₁) is valid for

The acentric factor of a materical, 'ω', is defined as ω = -log₁₀(P_r^sat)T_r^-1 = 0.7, where, P_r^sat = reduced vapor pressure, T_r = reduced temperature. The value of acentric factor is always

In the ammonia synthesis reaction, N₂ + 3H₂ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

In which of the following reaction equilibrium, the value of equilibrium constant K_p will be more than is K_c?

Sublimation temperature of dry ice (solid CO₂) is __________ °C.

d_W and d_q are not the exact differential, because q and W are

In polytropic process (PVⁿ = constant), if n = 1; it means a/an __________ process.

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