Chemical Engineering Thermodynamics

501. Which one is true for a throttling process?

1. A gas may have more than one inversion temperatures
2. The inversion temperature is different for different gases
3. The inversion temperature is same for all gases
4. The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity

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502. While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is

1. Infinity
2. Unity
3. Constant
4. Negative

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503. With increase in compression ratio, the efficiency of the otto engine

1. Increases
2. Decreases
3. Remain constant
4. Increases linearly

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504. With increase in pressure (above atmospheric pressure), the C_p of a gas

1. Increases
2. Decreases
3. Remains unchanged
4. First decreases and then increases

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505. With increase in reduced temperature, the fugacity co-efficient of a gas at constant reduced pressure

1. Increases
2. Decreases
3. Remain same
4. Decreases linearly

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506. With increase in temperature, the atomic heat capacities of all solid elements

1. Increases
2. Decreases
3. Remains unchanged
4. Decreases linearly

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507. With increase in temperature, the internal energy of a substance

1. Increases
2. Decreases
3. Remains unchanged
4. May increase or decrease; depends on the substance

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508. Work done in an adiabatic process between two states depends on the

1. Rate of heat transmission
2. Initial state only
3. End states only
4. None of these

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509. Work done in case of free expansion is

1. Indeterminate
2. Zero
3. Negative
4. None of these

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510. Work done is a

1. Property of the system
2. Path function
3. Point function
4. State description of a system

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