The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzmanns constant, T = absolute temperature)

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The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzmanns constant, T = absolute temperature)

A. √(2KT/m)

B. √(3KT/m)

C. √(6KT/m)

D. 3KT/m

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For an exothermic reaction

A. Only enthalpy change (ΔH) is negative

B. Only internal energy change (ΔE) is negative

C. Both ΔH and ΔE are negative

D. Enthalpy change is zero

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The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.

A. Less than

B. More than

C. Same as

D. Not related to

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What is the value of Joule-Thomson co-efficient for an ideal gas?

A. +ve

B. -ve

C. 0

D. ∞

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

A. Van Laar equation

B. Margules equation

C. Wilson's equation

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

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__________ Equation predicts the activity coefficient from experimental data.

A. Lewis-Randall

B. Margules

C. Van Laar

D. Both (B) & (C)

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Ideal refrigeration cycle is

A. Same as Carnot cycle

B. Same as reverse Carnot cycle

C. Dependent on the refrigerant's properties

D. The least efficient of all refrigeration processes

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In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible __________ process.

A. Isobaric

B. Isothermal

C. Isentropic

D. Isometric

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Free energy

A. Decreases in all spontaneous (or irreversible) processes

B. Change during a spontaneous process has a negative value

C. Remains unchanged in reversible processes carried at constant temperature and pressure

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

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C_v is given by

A. (∂E/∂T)_V

B. (∂E/∂V)_T

C. (∂E/∂P)_V

D. (∂V/∂T)_P

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The first law of thermodynamics is a statement of conservation of

A. Heat

B. Momentum

C. Energy

D. Work

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Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of

A. Fusion

B. Vaporisation

C. Transition

D. None of these

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Which of the following will increase the volume of a real gas by four times?

A. Doubling the absolute temperature as well as pressure of the gas

B. Reducing pressure to one fourth at constant temperature

C. Reducing temperature to one fourth at constant pressure

D. Reducing the temperature to half and doubling the pressure

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Change of state namely evaporation condensation, freezing and melting is an __________ process.

A. Isothermal

B. Adiabatic

C. Isobaric

D. Isochoric

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For equilibrium process (i.e. reversible) in an isolated system

A. ds = 0

B. ds < 0

C. ds > 0

D. ds = Constant

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

A. Decreases

B. Increases

C. Remain same

D. Decreases linearly

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If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

A. 100

B. 50

C. 205

D. 200

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

A. Kp₂/Kp₁ = - (ΔH/R) (1/T₂ - 1/T₁)

B. Kp₂/Kp₁ = (ΔH/R) (1/T₂ - 1/T₁)

C. Kp₂/Kp₁ = ΔH (1/T₂ - 1/T₁)

D. Kp₂/Kp₁ = - (1/R) (1/T₂ - 1/T₁)

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Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.

A. Gibbs-Duhem

B. Maxwell's

C. Clapeyron

D. None of these

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For a reversible process involving only pressure-volume work

A. (dF)_T, p < 0

B. (dF)_T, p > 0

C. (dF)_T, p = 0

D. (dA)_T, v < 0

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__________ does not change during phase transformation processes like sublimation, melting & vaporisation.

A. Entropy

B. Gibbs free energy

C. Internal energy

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

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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

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If heat contents of CH₄, C₂H₄ and C₃H₈ are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH₄(g) + C₂H₄(g) C₃H₈(g) will be __________ Kcal.

A. -19.4

B. -30.2

C. 55.2

D. -55.2

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Gibbs phase rule finds application, when heat transfer occurs by

A. Conduction

B. Convection

C. Radiation

D. Condensation

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In the reaction, H₂ +I₂ 2HI, addition of an inert gas will

A. Increase the partial pressure of H₂

B. Increase the partial pressure of I₂

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

D. Not affect the equilibrium conditions

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Which of the following is not an intensive property?

A. Volume

B. Density

C. Temperature

D. Pressure

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The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.

A. Lowest

B. Highest

C. Average

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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Which of the following decreases with increase in pressure?

A. Melting point of ice

B. Melting point of wax

C. Boiling point of liquids

D. None of these

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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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Pick out the wrong statement pertaining to the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂.Degree of dissociation of PCl₅ will

A. Decrease on addition of Cl₂

B. Increase on addition of an inert gas at constant pressure

C. Decrease on increasing the pressure of the system

D. None of these

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Accepted Answer

B. √(3KT/m)

The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzmanns constant, T = absolute temperature)

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

For an exothermic reaction

The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.

What is the value of Joule-Thomson co-efficient for an ideal gas?

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

__________ Equation predicts the activity coefficient from experimental data.

Ideal refrigeration cycle is

In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible __________ process.

Free energy

C_v is given by

The first law of thermodynamics is a statement of conservation of

Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of

Which of the following will increase the volume of a real gas by four times?

Change of state namely evaporation condensation, freezing and melting is an __________ process.

For equilibrium process (i.e. reversible) in an isolated system

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

If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

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

Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.

For a reversible process involving only pressure-volume work

__________ does not change during phase transformation processes like sublimation, melting & vaporisation.

The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point.

If heat contents of CH₄, C₂H₄ and C₃H₈ are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH₄(g) + C₂H₄(g) C₃H₈(g) will be __________ Kcal.

Gibbs phase rule finds application, when heat transfer occurs by

In the reaction, H₂ +I₂ 2HI, addition of an inert gas will

Which of the following is not an intensive property?

The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.

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

Which of the following decreases with increase in pressure?

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

Pick out the wrong statement pertaining to the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂.Degree of dissociation of PCl₅ will

Also checkout

The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzmanns constant, T = absolute temperature)

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

For an exothermic reaction

The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.

What is the value of Joule-Thomson co-efficient for an ideal gas?

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

__________ Equation predicts the activity coefficient from experimental data.

Ideal refrigeration cycle is

In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible __________ process.

Free energy

Cv is given by

The first law of thermodynamics is a statement of conservation of

Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of

Which of the following will increase the volume of a real gas by four times?

Change of state namely evaporation condensation, freezing and melting is an __________ process.

For equilibrium process (i.e. reversible) in an isolated system

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

If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

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

Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.

For a reversible process involving only pressure-volume work

__________ does not change during phase transformation processes like sublimation, melting & vaporisation.

The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point.

If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) C3H8(g) will be __________ Kcal.

Gibbs phase rule finds application, when heat transfer occurs by

In the reaction, H2 +I2 2HI, addition of an inert gas will

Which of the following is not an intensive property?

The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.

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

Which of the following decreases with increase in pressure?

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

Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2.Degree of dissociation of PCl5 will

Also checkout

C_v is given by

If heat contents of CH₄, C₂H₄ and C₃H₈ are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH₄(g) + C₂H₄(g) C₃H₈(g) will be __________ Kcal.

In the reaction, H₂ +I₂ 2HI, addition of an inert gas will

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

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

Pick out the wrong statement pertaining to the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂.Degree of dissociation of PCl₅ will