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In thermodynamics, a process is called r...

In thermodynamics, a process is called reversible when

A

Surrounding and system change into each other

B

There is no boundary between system and surrounding

C

The surrounding are always in equilibrium with the system

D

The system changes into surrounding spontaneously

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-THERMODYNAMICS-SECTION-A
  1. A reaction occurs spontaneously in forward direction if

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  2. For an exothermic reaction to be spontaneous (DeltaS = negative)

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  3. The enthalpy change of a reaction does not depend on

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  4. The free energy change for a reversible reaction at equilibrium is: ...

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  5. In a chemical reaction, Delta H = 150 kJ and Delta S = 100 JK^(-1) at ...

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  6. Pick out the correct option which represents for the work done by the ...

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  7. A gas expands isothermally against a constant external pressure of 1 a...

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  8. The free energy change, DeltaG = 0, when

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  9. If an insulated container containing liquid is stirred with a paddle t...

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  10. If the bond energies of H-H, Br-Br and H-Br are 433, 192 and 364 KJ "m...

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  11. If one mole of ammonia and one mole of hydrogen chloride are mixed in ...

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  12. In thermodynamics, a process is called reversible when

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  13. X(g) + 2Y(g) rarr 2Z(g) + 3A(g) The change in enthalpy at 27^(@)C is 7...

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  14. In a spontaneous process the system undergoes

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  15. A quantity of an ideal gas at 20^(@)C reversibly expands against a con...

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  16. When the common salt dissolves in water, the entropy of the system inc...

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  17. Pick the extensive property from the given options

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  18. If a process is both endothermic and spontaneous then

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  19. The specific heat of gas is found to be 0.075 calories at constant vol...

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  20. The standard entropies of N(2)(g),H(2)(g) and NH(3)(g) are 191.5, 130....

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