21. In a P-V diagram (for an ideal gas), an isothermal curve will coincide withan adiabatic curve (through a point), when
22. The shape of T-S diagram for Carnot Cycle is a
23. With increase in compression ratio, the efficiency of the otto engine
24. What is the degree of freedom for a system comprising liquid water equilibrium with its vapour?
25. __________ functions are exemplified by heat and work.
26. A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P1 and P2. (where, P1 and P2 are initial and final pressures respectively)
27. Helmholtz free energy (A) is defined as
28. Gibbs free energy (F) is defined as
29. A system is said to be at equilibrium, if the entropy of the system has reached __________ value.
30. In the reaction, C + O2 → CO2; ΔH = -94 kcal. What is the heat content (enthalpy) of O2?
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