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Heat of reaction at constant volume is identified with __________ change.

A. Enthalpy

B. Internal energy

C. Either (A) or (B)

D. Neither (A) nor (B)

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Work done may be calculated by the expression ∫ p dA for __________ processes.
  2. Solubility of a substance which dissolves with an increase in volume and liberation of heat will be…
  3. Entropy is a/an
  4. In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the…
  5. Which of the following is not an equation of state?
  6. In the equation, PVn = constant, if the value of n is in between 1 and y (i.e. Cp/Cv), then it represents…
  7. __________ Equation predicts the activity coefficient from experimental data.
  8. A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature…
  9. While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the…
  10. Degree of freedom of the system ice-watervapour will be
  11. As the temperature is lowered towards the absolute zero, the value of ∂(ΔF)/∂T, then…
  12. Joule-Thomson effect i.e., a throttling process is a constant __________ process.
  13. At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero.…
  14. Which of the following is not a common refrigerant?
  15. Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition…
  16. Heat pump
  17. The temperature at which both liquid and gas phases are identical, is called the __________ point.
  18. Pick out the wrong statement:
  19. At __________ point, all the three phases (i.e. solid, liquid and gas) co-exist.
  20. The work done in an adiabatic change in a particular gas depends upon changes in the __________ only.
  21. For a cyclic process, a fixed ratio between heat and work
  22. Degrees of freedom at triple point will be
  23. A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The…
  24. If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical,…
  25. What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid…
  26. For an isothermal process, the internal energy of a gas
  27. An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas…
  28. Which of the following equations is used for the prediction of activity co-efficient from experiments?
  29. Pick out the wrong statement.
  30. The expression, ΔG = nRT. ln(P2/P1), gives the free energy change