Which of the following liquid metals has the highest thermal conductivity?

Question

Which of the following liquid metals has the highest thermal conductivity?

A. Molten sodium

B. Molten lead

C. Mercury

D. Molten potassium

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The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

A. Less

B. More

C. Same

D. Dependent on climatic conditions

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Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

A. Below

B. At

C. Above

D. Either 'b' or 'c'

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Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

A. Increase

B. Decrease

C. Remain unchanged

D. First fall and then rise

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A domestic refrigerator has a/an __________ cooled condenser.

A. Water

B. Air

C. Evaporative

D. Gas

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At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

A. μ° + RT ln f

B. μ°+ R ln f

C. μ° + T ln f

D. μ° + R/T ln f

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The value of gas constant 'R' is

A. 1.987 cal/gm mole °K

B. 1.987 BTU/lb. mole °R

C. Both (A) and (B)

D. Neither (A) nor (B)

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Chemical potential is a/an

A. Extensive property

B. Intensive property

C. Force which drives the chemical system to equilibrium

D. Both (B) and (C)

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Entropy of the system decreases, when

A. Snow melts into water

B. A gas expands spontaneously from high pressure to low pressure

C. Water is converted into ice

D. Both (B) & (C)

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Heat of reaction at constant volume is identified with __________ change.

A. Enthalpy

B. Internal energy

C. Either (A) or (B)

D. Neither (A) nor (B)

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Entropy of an ideal gas depends upon its

A. Pressure

B. Temperature

C. Both (A) & (B)

D. Neither (A) nor (B)

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The molar excess Gibbs free energy, g^E, for a binary liquid mixture at T and P is given by, (g^E/RT) = A . x₁. x₂, where A is a constant. The corresponding equation for ln y₁, where y₁ is the activity co-efficient of component 1, is

A. A . x₂²

B. Ax₁

C. Ax₂

D. Ax₁²

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Refrigeration cycle

A. Violates second law of thermodynamics

B. Involves transfer of heat from low temperature to high temperature

C. Both (A) and (B)

D. Neither (A) nor (B)

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Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system?

A. Expansion valve

B. Condenser

C. Refrigerator

D. Compressor

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Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of

A. Solution

B. Vaporisation

C. Formation

D. Sublimation

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When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is

A. More in vapour phase

B. More in liquid phase

C. Same in both the phases

D. Replaced by chemical potential which is more in vapour phase

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(1/V) (∂V/∂T)_P is the mathematical expression

A. Joule-Thomson co-efficient

B. Specific heat at constant pressure (C_p)

C. co-efficient of thermal expansion

D. Specific heat at constant volume (C_V)

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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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Claude gas liquefaction process employs cooling

A. At constant pressure

B. By throttling

C. By expansion in an engine

D. None of these

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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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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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Which of the following is not an intensive property?

A. Volume

B. Density

C. Temperature

D. Pressure

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Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

A. Fugacity

B. Partial pressure

C. Activity co-efficient

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

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Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is

A. 0

B. ∞

C. +ve

D. -ve

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Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of

A. Sublimation

B. Fusion

C. Transition

D. Vaporisation

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For a single component two phase mixture, the number of independent variable properties are

A. Two

B. One

C. Zero

D. Three

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The minimum number of phases that can exist in a system is

A. 0

B. 1

C. 2

D. 3

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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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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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Reduced pressure of a gas is the ratio of its

A. Pressure to critical pressure

B. Critical pressure to pressure

C. Pressure to pseudocritical pressure

D. Pseudocritical pressure to pressure

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Second law of thermodynamics is concerned with the

A. Amount of energy transferred

B. Direction of energy transfer

C. Irreversible processes only

D. Non-cyclic processes only

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Accepted Answer

A. Molten sodium

Which of the following liquid metals has the highest thermal conductivity?

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

A domestic refrigerator has a/an __________ cooled condenser.

At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

The value of gas constant 'R' is

Chemical potential is a/an

Entropy of the system decreases, when

Heat of reaction at constant volume is identified with __________ change.

Entropy of an ideal gas depends upon its

The molar excess Gibbs free energy, g^E, for a binary liquid mixture at T and P is given by, (g^E/RT) = A . x₁. x₂, where A is a constant. The corresponding equation for ln y₁, where y₁ is the activity co-efficient of component 1, is

Refrigeration cycle

Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system?

Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of

When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is

(1/V) (∂V/∂T)_P is the mathematical expression

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

Claude gas liquefaction process employs cooling

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

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

Which of the following is not an intensive property?

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of

For a single component two phase mixture, the number of independent variable properties are

The minimum number of phases that can exist in a system is

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

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

Reduced pressure of a gas is the ratio of its

Second law of thermodynamics is concerned with the

Also checkout

Which of the following liquid metals has the highest thermal conductivity?

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will

A domestic refrigerator has a/an __________ cooled condenser.

At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

The value of gas constant 'R' is

Chemical potential is a/an

Entropy of the system decreases, when

Heat of reaction at constant volume is identified with __________ change.

Entropy of an ideal gas depends upon its

The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1 is the activity co-efficient of component 1, is

Refrigeration cycle

Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system?

Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of

When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is

(1/V) (∂V/∂T)P is the mathematical expression

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

Claude gas liquefaction process employs cooling

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

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

Which of the following is not an intensive property?

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of

For a single component two phase mixture, the number of independent variable properties are

The minimum number of phases that can exist in a system is

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

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

Reduced pressure of a gas is the ratio of its

Second law of thermodynamics is concerned with the

Also checkout

The molar excess Gibbs free energy, g^E, for a binary liquid mixture at T and P is given by, (g^E/RT) = A . x₁. x₂, where A is a constant. The corresponding equation for ln y₁, where y₁ is the activity co-efficient of component 1, is

(1/V) (∂V/∂T)_P is the mathematical expression

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