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With increase in temperature, the internal energy of a substance

A. Increases

B. Decreases

C. Remains unchanged

D. May increase or decrease; depends on the substance

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  1. Pick out the wrong statement:
  2. When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the…
  3. Consider the process A & B shown in the figure given below: In this case, it is possible that
  4. For a constant volume process
  5. Which is not constant for an ideal gas?
  6. Joule-Thomson experiment is
  7. Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity…
  8. A solute distributes itself between two nonmiscible solvents in contact with each other in such a way…
  9. The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 >…
  10. For spontaneous changes in an isolated system (S = entropy)
  11. Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called…
  12. Chemical potential is a/an
  13. Extensive properties of a thermodynamic system depend upon the __________ of the system.
  14. Pick out the wrong statement.
  15. The number of degrees of freedom at the triple point of water is
  16. Lenz's law results from the law of conservation of
  17. If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are…
  18. When pressure is applied on the system, ice ↔ water, then
  19. The first law of thermodynamics is a restatement of the law of conservation of
  20. The work done in isothermal compression compared to that in adiabatic compression will be
  21. Ideal gas law is applicable at
  22. Free energy change of mixing two liquid substances is a function of the
  23. Throttling process is a/an __________ process.
  24. In the ammonia synthesis reaction, N2 + 3H2 2NH3 + 22.4 kcal, the formation of NH3 will be favoured…
  25. If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH…
  26. The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume…
  27. The necessary condition for phase equilibrium in a multiphase system of N components is that the
  28. The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing…
  29. The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction…
  30. For a real gas, the chemical potential is given by