With increase in temperature, the internal energy of a substance

Question

With increase in temperature, the internal energy of a substance

A. Increases

B. Decreases

C. Remains unchanged

D. May increase or decrease; depends on the substance

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For an ideal liquid solution, which of the following is unity?

A. Activity

B. Fugacity

C. Activity co-efficient

D. Fugacity co-efficient

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At the critical point of a substance

A. The surface tension vanishes

B. Liquid and vapour have the same density

C. There is no distinction between liquid and vapour phases

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

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One ton of refrigeration capacity is equivalent to the heat removal rate of

A. 50 kcal/hr

B. 200 BTU/hr

C. 200 BTU/minute

D. 200 BTU/day

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The intensive properties are

A. Molar volume, density, viscosity and boiling point

B. Refractive index and surface tension

C. Both (A) and (B)

D. None of these

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(∂H/∂T)_P is the mathematical expression for

A. C_V

B. Entropy change

C. Gibbs free energy

D. None of these

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Number of degrees of freedom for a three phase system in equilibrium comprising of three nonreacting chemical species is

A. 2

B. 0

C. 1

D. 3

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Consider the reaction, C + O₂ CO₂; ΔH = - 94 kcal. What will be the value of ΔH for the reaction CO₂ → C + O₂?

A. -94 kcal

B. +94 kcal

C. > 94 kcal

D. < -94 kcal

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

A. Vant-Hoff equation

B. Le-Chatelier's principle

C. Arrhenius equation

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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Clausius-Clapeyron Equation gives accurate result, when the

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

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

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As the time is passing, entropy of the universe

A. Is increasing

B. Is decreasing

C. Remain constant

D. Data insufficient, can't be predicted

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The ammonia synthesis reaction represented by N₂ + 3H₂ 2NH₃; ΔH = - 22.4 kcal, is

A. Endothermic

B. Exothermic

C. Isothermal

D. Adiabatic

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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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Activity co-efficient is a measure of the

A. Departure from ideal solution behaviour

B. Departure of gas phase from ideal gas law

C. Vapour pressure of liquid

D. None of these

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All gases during throttling process at atmospheric temperature and pressure show a cooling effect except

A. CO₂

B. H₂

C. O₂

D. N₂

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__________ law of thermodynamics ascertains the direction of a particular spontaneous process.

A. Zeroth

B. First

C. Second

D. Third

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Which of the following processes cannot be made reversible even under ideal condition of operation?

A. Free expansion of a gas

B. Compression of air in a compressor

C. Expansion of steam in a turbine

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

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The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant C_v), depends upon its

A. Pressure

B. Volume

C. Temperature

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

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Degree of freedom of the system ice-watervapour will be

A. 0

B. 1

C. 2

D. 3

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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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C_p - C_v = R is valid for __________ gases.

A. Ideal

B. Very high pressure

C. Very low temperature

D. All of the above

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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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Pick out the extensive property out of the following.

A. Surface tension

B. Free energy

C. Specific heat

D. Refractive index

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In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through a point), when

A. C_p < C_v

B. C_p = C_v

C. C_p > C_v

D. C ≥ C_v

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For spontaneous changes in an isolated system (S = entropy)

A. ds = 0

B. ds <0

C. ds > 0

D. ds = Constant

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For a given substance at a specified temperature, activity is __________ to fugacity.

A. Directly proportional

B. Inversely proportional

C. Equal

D. None of these

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Dryness fraction of wet steam is defined as the ratio of mass of vapour in the mixture to the mass of mixture __________ calorimeter is not used for measuring the dryness fraction of steam.

A. Bomb

B. Separating

C. Bucket

D. Throttling

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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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Forward reaction will be favoured for the exothermic reaction, represented by CO + H₂O CO₂ + H₂, by

A. Low temperature and high pressure

B. Low temperature and low pressure

C. High temperature and high pressure

D. High temperature and low pressure

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A solid is transformed into vapour without going to the liquid phase at

A. Triple point

B. Boiling point

C. Below triple point

D. Always

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Accepted Answer

A. Increases

With increase in temperature, the internal energy of a substance

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

For an ideal liquid solution, which of the following is unity?

At the critical point of a substance

One ton of refrigeration capacity is equivalent to the heat removal rate of

The intensive properties are

(∂H/∂T)_P is the mathematical expression for

Number of degrees of freedom for a three phase system in equilibrium comprising of three nonreacting chemical species is

Consider the reaction, C + O₂ CO₂; ΔH = - 94 kcal. What will be the value of ΔH for the reaction CO₂ → C + O₂?

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

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

Clausius-Clapeyron Equation gives accurate result, when the

As the time is passing, entropy of the universe

The ammonia synthesis reaction represented by N₂ + 3H₂ 2NH₃; ΔH = - 22.4 kcal, is

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

Activity co-efficient is a measure of the

All gases during throttling process at atmospheric temperature and pressure show a cooling effect except

__________ law of thermodynamics ascertains the direction of a particular spontaneous process.

Which of the following processes cannot be made reversible even under ideal condition of operation?

The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant C_v), depends upon its

Degree of freedom of the system ice-watervapour will be

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

C_p - C_v = R is valid for __________ gases.

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

Pick out the extensive property out of the following.

In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through a point), when

For spontaneous changes in an isolated system (S = entropy)

For a given substance at a specified temperature, activity is __________ to fugacity.

Dryness fraction of wet steam is defined as the ratio of mass of vapour in the mixture to the mass of mixture __________ calorimeter is not used for measuring the dryness fraction of steam.

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

Forward reaction will be favoured for the exothermic reaction, represented by CO + H₂O CO₂ + H₂, by

A solid is transformed into vapour without going to the liquid phase at

Also checkout

With increase in temperature, the internal energy of a substance

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

For an ideal liquid solution, which of the following is unity?

At the critical point of a substance

One ton of refrigeration capacity is equivalent to the heat removal rate of

The intensive properties are

(∂H/∂T)P is the mathematical expression for

Number of degrees of freedom for a three phase system in equilibrium comprising of three nonreacting chemical species is

Consider the reaction, C + O2 CO2; ΔH = - 94 kcal. What will be the value of ΔH for the reaction CO2 → C + O2?

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

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

Clausius-Clapeyron Equation gives accurate result, when the

As the time is passing, entropy of the universe

The ammonia synthesis reaction represented by N2 + 3H2 2NH3; ΔH = - 22.4 kcal, is

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

Activity co-efficient is a measure of the

All gases during throttling process at atmospheric temperature and pressure show a cooling effect except

__________ law of thermodynamics ascertains the direction of a particular spontaneous process.

Which of the following processes cannot be made reversible even under ideal condition of operation?

The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant Cv), depends upon its

Degree of freedom of the system ice-watervapour will be

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

Cp - Cv = R is valid for __________ gases.

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

Pick out the extensive property out of the following.

In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through a point), when

For spontaneous changes in an isolated system (S = entropy)

For a given substance at a specified temperature, activity is __________ to fugacity.

Dryness fraction of wet steam is defined as the ratio of mass of vapour in the mixture to the mass of mixture __________ calorimeter is not used for measuring the dryness fraction of steam.

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

Forward reaction will be favoured for the exothermic reaction, represented by CO + H2O CO2 + H2, by

A solid is transformed into vapour without going to the liquid phase at

Also checkout

(∂H/∂T)_P is the mathematical expression for

Consider the reaction, C + O₂ CO₂; ΔH = - 94 kcal. What will be the value of ΔH for the reaction CO₂ → C + O₂?

The ammonia synthesis reaction represented by N₂ + 3H₂ 2NH₃; ΔH = - 22.4 kcal, is

The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant C_v), depends upon its

C_p - C_v = R is valid for __________ gases.

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

Forward reaction will be favoured for the exothermic reaction, represented by CO + H₂O CO₂ + H₂, by