What is the correct answer?


Entropy of a substance remains constant during a/an __________ change.

A. Reversible isothermal

B. Irreversible isothermal

C. Reversible adiabatic

D. None of these

Correct Answer :

C. Reversible adiabatic

Related Questions

A solute distributes itself between two nonmiscible solvents in contact… Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole. Fundamental principle of refrigeration is based on the __________ law… What is the degree of freedom for two miscible (non-reacting) substances… The internal energy of an ideal gas does not change in a reversible __________… As the entropy of the universe is increasing, day by day, the work producing… At triple point (for one component system), vapour pressure of solid as… Trouton's ratio is given by (where λb, = molal heat of vaporisation… At the absolute zero temperature, the entropy of every perfectly crystalline… Efficiency of a Carnot engine working between temperatures T1 and T2 (T1… The relation connecting the fugacities of various components in a solution… In any spontaneous process, Which of the following equations is used for the prediction of activity… Number of degrees of freedom for a three phase system in equilibrium comprising… Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H… Which of the following is true for Virial equation of state? Thermal efficiency of a Carnot engine can approach 100%, only when the… Fugacity co-efficient of a substance is the ratio of its fugacity to What is the number of degrees of freedom for liquid water in equilibrium… In Joule-Thomson porous plug experiment, the The reaction A (l) → R(g) is allowed to reach equilibrium conditions… Which of the following processes cannot be made reversible even under… In which of the following reaction equilibrium, the value of equilibrium… Which of the following will increase the volume of a real gas by four… The total change in the enthalpy of a system is independent of the The molar excess Gibbs free energy, gE, for a binary liquid mixture at… The compressibility factor for an ideal gas is 1. Its value for any other… The efficiency of an Otto engine compared to that of a diesel engine,… An irreversible process Measurement of thermodynamic property of temperature is facilitated by…