Chemical Engineering Thermodynamics

371. The expression, nCv(T₂ - T₁), is for the _________ of an ideal gas.

1. Work done under adiabatic condition
2. Co-efficient of thermal expansion
3. Compressibility
4. None of these

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372. The expression, nRT ln(P1/P2), is for the _________of an ideal gas.

1. Compressibility
2. Work done under adiabatic condition
3. Work done under isothermal condition
4. Co-efficient of thermal expansion

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373. The extensive properties are

1. Volume, mass and number of moles
2. Free energy, entropy and enthalpy
3. Both (A) and (B)
4. None of these

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374. The first law of thermodynamics is a restatement of the law of conservation of

1. Mass
2. Energy
3. Momentum
4. None of these

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375. The first law of thermodynamics is a statement of conservation of

1. Heat
2. Momentum
3. Energy
4. Work

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376. The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is

1. 100,000 kW
2. 160,000 kW
3. 200,000 kW
4. 320,000 kW

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377. The four properties of a system viz. P, V, T, S are related by _________ equation.

1. Gibbs-Duhem
2. Gibbs-Helmholtz
3. Maxwell's
4. None of these

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379. The freezing point of a liquid decreases when the pressure is increased, if the liquid _________ while freezing.

1. Contracts
2. Expands
3. Does not change in volume
4. Either (A), (B) or (C)

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380. The gas law (PV = RT) is true for an _________ change.

1. Isothermal
2. Adiabatic
3. Both (A) & (B)
4. Neither (A) nor (B)

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