First law of thermodynamics deals with the

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First law of thermodynamics deals with the

A. Direction of energy transfer

B. Reversible processes only

C. Irreversible processes only

D. None of these

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Degrees of freedom at triple point will be

A. 0

B. 1

C. 2

D. 3

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Pick out the correct statement.

A. Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero

B. Melting of ice involves increase in enthalpy and a decrease in randomness

C. The internal energy of an ideal gas depends only on its pressure

D. Maximum work is done under reversible conditions

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A gas performs the maximum work, when it expands

A. Non-uniformly

B. Adiabatically

C. Isobarically

D. Isothermally

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Which of the following is not an intensive property?

A. Molar heat capacity

B. Internal energy

C. Viscosity

D. None of these

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At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be

A. More

B. Less

C. Same

D. More or less; depending on the system

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High __________ is an undesirable property for a good refrigerant.

A. Specific heat

B. Latent heat of vaporisation

C. Viscosity

D. Specific vapor volume

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Gibbs free energy (F) is defined as

A. F = E - TS

B. F = H - TS

C. F = H + TS

D. F = E + TS

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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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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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Joule-Thomson Co-efficient at any point on the inversion curve is

A. ∞

B. +ve

C. 0

D. -ve

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Fugacity and pressure are numerically not equal for the gases

A. At low temperature and high pressure

B. At standard state

C. Both (A) and (B)

D. In ideal state

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Entropy change in case of reversible adiabatic process is

A. Minimum

B. Zero

C. Maximum

D. Indeterminate

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The equation DU = Tds - PdV is applicable to infinitesimal changes occuring in

A. An open system of constant composition

B. A closed system of constant composition

C. An open system with changes in composition

D. A closed system with changes in composition

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A gas shows deviation from ideal behaviour at

A. Low pressure and high temperature

B. Low pressure and low temperature

C. Low temperature and high pressure

D. High temperature and high pressure

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The expression for entropy change, ΔS = n C_p . ln (T₂/T₁), is valid for the __________ of a substance.

A. Simultaneous pressure & temperature change

B. Heating

C. Cooling

D. Both (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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A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

A. Δ S₁ is always < Δ S_R

B. Δ S₁ is sometimes > Δ S_R

C. Δ S₁ is always > Δ S_R

D. Δ S₁ is always = Δ S_R

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Which of the following is affected by the temperature?

A. Fugacity

B. Activity co-efficient

C. Free energy

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

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The expression for entropy change given by, ΔS = - nR ln (P₂/P₁), holds good for

A. Expansion of a real gas

B. Reversible isothermal volume change

C. Heating of an ideal gas

D. Cooling of a real gas

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Joule-Thomson effect i.e., a throttling process is a constant __________ process.

A. Entropy

B. Temperature

C. Internal energy

D. Enthalpy

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

A. Decrease in velocity

B. Decrease in temperature

C. Decrease in kinetic energy

D. Energy spent in doing work

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Heat pump

A. Accomplishes only space heating in winter

B. Accomplishes only space cooling in summer

C. Accomplishes both (A) and (B)

D. Works on Carnot cycle

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Measurement of thermodynamic property of temperature is facilitated by __________ law of thermodynamics.

A. 1st

B. Zeroth

C. 3rd

D. None of these

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__________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low.

A. Bucket

B. Throttling

C. Separating

D. A combination of separating & throttling

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Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the

A. Calorific value

B. Heat of reaction

C. Heat of combustion

D. Heat of formation

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Gibbs free energy of mixing at constant pressure and temperature is always

A. 0

B. ∞

C. + ve

D. - ve

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Throttling (Joule-Thomson effect) process is a constant __________ process.

A. Enthalpy

B. Entropy

C. Pressure

D. None of these

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What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope?

A. 0

B. 2

C. 1

D. 3

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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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A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.

A. Sub-cooled

B. Saturated

C. Non-solidifiable

D. None of these

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Accepted Answer

A. Direction of energy transfer

First law of thermodynamics deals with the

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Degrees of freedom at triple point will be

Pick out the correct statement.

A gas performs the maximum work, when it expands

Which of the following is not an intensive property?

At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be

High __________ is an undesirable property for a good refrigerant.

Gibbs free energy (F) is defined as

Chemical potential of ith component of a system is given by

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

Joule-Thomson Co-efficient at any point on the inversion curve is

Fugacity and pressure are numerically not equal for the gases

Entropy change in case of reversible adiabatic process is

The equation DU = Tds - PdV is applicable to infinitesimal changes occuring in

A gas shows deviation from ideal behaviour at

The expression for entropy change, ΔS = n C_p . ln (T₂/T₁), is valid for the __________ of a substance.

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

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

Which of the following is affected by the temperature?

The expression for entropy change given by, ΔS = - nR ln (P₂/P₁), holds good for

Joule-Thomson effect i.e., a throttling process is a constant __________ process.

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

Heat pump

Measurement of thermodynamic property of temperature is facilitated by __________ law of thermodynamics.

__________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low.

Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the

Gibbs free energy of mixing at constant pressure and temperature is always

Throttling (Joule-Thomson effect) process is a constant __________ process.

What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope?

For an exothermic reaction

A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.

Also checkout

First law of thermodynamics deals with the

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Degrees of freedom at triple point will be

Pick out the correct statement.

A gas performs the maximum work, when it expands

Which of the following is not an intensive property?

At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be

High __________ is an undesirable property for a good refrigerant.

Gibbs free energy (F) is defined as

Chemical potential of ith component of a system is given by

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

Joule-Thomson Co-efficient at any point on the inversion curve is

Fugacity and pressure are numerically not equal for the gases

Entropy change in case of reversible adiabatic process is

The equation DU = Tds - PdV is applicable to infinitesimal changes occuring in

A gas shows deviation from ideal behaviour at

The expression for entropy change, ΔS = n Cp . ln (T2/T1), is valid for the __________ of a substance.

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

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively)

Which of the following is affected by the temperature?

The expression for entropy change given by, ΔS = - nR ln (P2/P1), holds good for

Joule-Thomson effect i.e., a throttling process is a constant __________ process.

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

Heat pump

Measurement of thermodynamic property of temperature is facilitated by __________ law of thermodynamics.

__________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low.

Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the

Gibbs free energy of mixing at constant pressure and temperature is always

Throttling (Joule-Thomson effect) process is a constant __________ process.

What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope?

For an exothermic reaction

A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.

Also checkout

The expression for entropy change, ΔS = n C_p . ln (T₂/T₁), is valid for the __________ of a substance.

A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S₁ and Δ S_R are the entropy changes of the system for the irreversible and reversible processes respectively)

The expression for entropy change given by, ΔS = - nR ln (P₂/P₁), holds good for