In any spontaneous process, ?

Related Mcqs:

1. For a spontaneous process, free energy__________________?

   A. Is zero
   B. Increases
   C. Decreases whereas the entropy increases
   D. And entropy both decrease

2. In any spontaneous process, the ______________ free energy decreases ?

   A. Helmholtz
   B. Gibbs
   C. Both A. & B.
   D. Neither A. nor B.

3. _____________ law of thermodynamics ascertains the direction of a particular spontaneous process?

   A. Zeroth
   B. First
   C. Second
   D. Third

4. For spontaneous changes in an isolated system (S = entropy) ___________________?

   A. ds = 0
   B. ds <0
   C. ds > 0
   D. ds = Constant

5. A change in state involving a decrease in entropy can be spontaneous, only if ____________________?

   A. It is exothermic
   B. It is isenthalpic
   C. It takes place isothermally
   D. It takes place at constant volume

6. Joule-Thomson effect i.e., a throttling process is a constant _____________ process?

   A. Entropy
   B. Temperature
   C. Internal energy
   D. Enthalpy

7. A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively) ?

   A. Δ S1 is always Δ SR
   C. Δ S1 is always > Δ SR
   D. Δ S1 is always = Δ SR

8. The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?

   A. Isobaric
   B. Isothermal
   C. Adiabatic
   D. None of these

9. In polytropic process (PVn = constant), if n = 1; it means a/an ______________ process?

   A. Adiabatic
   B. Reversible
   C. Isothermal
   D. None of these

10. Isentropic process means a constant _____________________ process ?

    A. Enthalpy
    B. Pressure
    C. Entropy
    D. None of these