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Which of the following statements is cor...

Which of the following statements is correct for any thermodynamic system

A

The internal energy changes in all processes

B

Internal energy and entropy are state functions

C

The change in entropy can never be zero

D

The work done in an adiabatic process is always zero

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The correct Answer is:
B
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MOTION-Thermodynamics-EXERCISE - 3 SECTION b
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  2. A Carnot engine takes 3xx10^6 cal of heat from a reservoir at 627^@C a...

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  3. Which of the following statements is correct for any thermodynamic sys...

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  4. Which of the following is incorrect regarding the first law of thermod...

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  5. The temperature -entropy diagram of a reversible engine cycle is given...

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  6. A system goes from A and B via two processes. I and II as shown in fig...

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  7. The work of 146 kJ is performed in order to compress one kilo mole of ...

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  8. A Carnot engine, having an efficiency of eta= 1/10 as heat engine, is ...

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  9. When a system is taken from state i to state f along the path iaf, it ...

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  10. Assume the gas to be ideal, the work done on the gas in taking it from...

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  11. Two moles of helium gas are taken over the cycle ABCDA, as shown in th...

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  12. Two moles of helium gas are taken over the cycle ABCDA, as shown in th...

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  13. A diatomic ideal gas is used in a Carnot engine as the working substan...

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  14. A thermally insulated vessel contains an ideal gas of molecular mass M...

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  15. A carnot engine operating between temperatures T(1) and T(2) has effic...

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  16. Helium gas goes through a cycle ABCDA (consisting of two isochoric and...

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  17. A Carnot engine, whose efficiency is 40%, takes in heat from a source ...

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  18. The above p-v diagram represents the thermodynamic cycle of an engine,...

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  19. One mole of a diatomic ideal gas undergoes a cyclic process ABC as sho...

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  20. A solid body of constant heat capacity 1J//^@C is being heated by keep...

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