The net change in entropy in any reversible cycle is always zero

The entropy of the system as a whole in an irreversible process increases

The entropy of the universe tends to a maximum

The entropy of a substance does not remain constant during a reversible adiabatic change

**What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid…****At __________ point, all the three phases (i.e. solid, liquid and gas) co-exist.****When a gas in a vessel expands, its internal energy decreases. The process involved is****Activity co-efficient is a measure of the****What is the value of ln y (where y = activity co-efficient) for ideal gases?****The equation Tds = dE - PdV applies to****An ideal monatomic gas is taken round the cycle ABCDA as shown below in the P-V diagram. The work done…****Chemical engineering thermodynamics is concerned with the __________ in/of chemical processes.****Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole.****At equilibrium condition, the chemical potential of a material in different phases in contact with each…****Which of the following behaves most closely like an ideal gas?****Entropy of the system decreases, when****Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as****With increase in pressure (above atmospheric pressure), the Cp of a gas****The necessary and sufficient condition for equilibrium between two phases is****The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point…****In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction…****In the reaction, C + O2 → CO2; ΔH = - 94 kcal. What is the heat content (enthalpy) of O2?****The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for****Which of the following is not a common refrigerant?****The expression for entropy change given by, ΔS = - nR ln (P2/P1), holds good for****Charles' law for gases states that****Which one is true for a throttling process?****An irreversible process****As the entropy of the universe is increasing, day by day, the work producing capacity of a heat engine…****Pick out the correct statement.****The total change in the enthalpy of a system is independent of the****In case of steady flow compression polytropic process (PVn = constant), the work done on air is the…****Co-efficient of Performance (COP) of a refrigerator is the ratio of the****In any spontaneous process,**