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The internal energy of a gas decreases b...

The internal energy of a gas decreases by an amount equal to the external work, the gas is undergoing

A

adiabatic expansion

B

adiabatic compression

C

isothermal expansion

D

isochoric expansion

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CHETANA PUBLICATION-Thermodynamics-EXERCISE
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  2. For a gas undergoing an adiabatic process, the relation between temper...

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  3. The internal energy of a gas decreases by an amount equal to the exter...

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  4. In a cyclic process

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  5. delta Q = delta U is true for

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  6. For isothermal expansion of perfect gas, the value of delta fra(P)(P) ...

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  7. Four curves A, B, Cand Dare drawn in the figure for a given amount of ...

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  8. A given mass of a gas expands from state A to state B by three paths 1...

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  9. If w1 and w2 are the amounts of work done in the given two indicator d...

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  10. In the indicator diagram shown, the work done along the path AB is br>

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  11. In the indicator diagram shown, the work done in the cyclic process is...

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  12. The internal energy of air in a room of volume 40 m^3 atstandard atmos...

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  13. A gas undergoes a change of state during which 100 J of heat is suppli...

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  14. The amount of work done to increase the temperature of one mole of an ...

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  15. Two engines A and B have their sources at 400 K and 350 K and sinks at...

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  16. If two thirds of the heat taken by a heat engine from the source is gi...

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  17. The efficiency of a heat engine is 20%, when the working substance is ...

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  18. If the absolute temperatures of the source and sink of a heat engine a...

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  19. Two Carnot engines A and B are operated in series. A receives heat at ...

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  20. A refrigerator has a coefficient of performance 9. If the surrounding ...

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