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Which is not a spontaneous process:...

Which is not a spontaneous process:

A

Expansion of a gas into vacum

B

Water flowing down hill

C

Heat flowing from colder body to a hotter body

D

Evaporation of water from clothes during drying

Text Solution

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The correct Answer is:
C
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MBD PUBLICATION-THERMODYNAMICS-Question Bank
  1. For the adiabatic expansion of an ideal gas:

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  2. The inversion temperature for a van der Waals' gas is:

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  3. Which is not a spontaneous process:

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  4. The equilibrium constant for the reaction is 10 at 300K. What will be ...

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  5. When ice melts into water, entropy:

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  6. Human body is an example of:

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  7. A closed flask contains water in all its three states, solids, liquid ...

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  8. Which gas shows a heating effect when expanded into a region of low pr...

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  9. On dissolving NaCl in water there occurs:

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  10. When hydrogen and oxygen burn to from water in an oxyhydrogen torch, t...

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  11. Joule Thomson co-efficient for ideal gas is:

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  12. triangleS is postive for the change:

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  13. The heat change in a chemical reaction at constant pressure is:

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  14. A thermally isolated gaseous system can exchange energy with the surro...

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  15. Which correctly represents the physical significance of free energy ch...

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  16. A reaction taking palce with absorption of energy is:

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  17. All the naturally occuring process i.e., spontaneous proceed spontaneo...

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  18. Work done by the system in a cyclic process is equal to:

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  19. Internal energy of an ideal gas depends on:

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  20. A spontaneous change is one in which the system suffers:

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