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The second law of thermodynamics implies...

The second law of thermodynamics implies

A

whole of heat can be converted into mechanical energy

B

no heat engine can be 100% efficient

C

every heat engine has an efficiency of 100%

D

a refrigerator can reduce the temperature to absolute zero.

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The correct Answer is:
B
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NARAYNA-KINETIC THEORY OF GASES-C.U.Q
  1. Which of the following laws of thermodynamics leads to the interferenc...

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  2. Starting with the same initial conditions, an ideal gas expands from v...

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  3. The second law of thermodynamics implies

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  4. In the adiabatic compression the decrease in volume is associated with

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  5. For adiabatic processes (gamma = (C(p))/(C(v)))

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  6. If an ideal gas is isothermally expanded its internal energy will

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  7. For an adiabatic process the relation between V and T is given by

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  8. The temperature of the system decreases in the process of

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  9. Heat engine rejects some heat to the sink. This heat

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  10. For an adiabatic change in a gas, if P,V,T denotes pressure, volume an...

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  11. PV versus T graph of equal masses of H(2), He and CO(2) is shown in fi...

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  12. If the ratio of specific heat of a gas of constant pressure to that at...

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  13. Heat is added to an ideal gas and the gas expands. In such a process t...

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  14. First law of thermodynamics states that

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  15. Which of the following has maximum specific heat?

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  16. The law obeyed by isothermal process is

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  17. Which law defines entropy in thermodynamics

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  18. For the conversion of liquid into a solid

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  19. Among the following the irreversibel process is

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  20. Which of the following processes are reversible ?

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