Match the enteries of processing given in List - I with the description given in List -II and choose the correct option (a),(b),(c) and (d) given in code.
`{: ( "List-I", " List-II"),( "(P)Isobaric process", " (1)process in which driving force is very different than opposing force.") , ("(Q)Isothermal process" , "(2)process in which no heat enters or leaves the system."),(" (R)Adiabatic process" , "(3)process in which temperature of the system remains constant.") , ( "(S)Irreversible process" , " (4)A process in which pressure of the system is kept constant."):}`

Options

A. P -4 Q -3, R -1, S-2
B. P-4, Q-3, R-2, S-1
C. P -3, Q-4, R-2, S-1
D. P-3, Q-4,R-1,S-2

Answer

To solve the problem of matching the entries from List-I with the descriptions in List-II, we will analyze each process step by step.

### Step-by-Step Solution:

1. **Identify the Isobaric Process (P)**:
- The term "isobaric" indicates a process that occurs at constant pressure.
- From List-II, the description that matches this definition is:
- **(4) A process in which pressure of the system is kept constant.**
- Therefore, we match **P with 4**.

2. **Identify the Isothermal Process (Q)**:
- The term "isothermal" refers to a process that occurs at constant temperature.
- From List-II, the description that matches this definition is:
- **(3) Process in which temperature of the system remains constant.**
- Therefore, we match **Q with 3**.

3. **Identify the Adiabatic Process (R)**:
- An "adiabatic" process is one where no heat is exchanged with the surroundings; that is, heat cannot enter or leave the system.
- From List-II, the description that matches this definition is:
- **(2) Process in which no heat enters or leaves the system.**
- Therefore, we match **R with 2**.

4. **Identify the Irreversible Process (S)**:
- An "irreversible" process is one where the driving force is very different from the opposing force, meaning it cannot easily return to its original state.
- From List-II, the description that matches this definition is:
- **(1) Process in which driving force is very different than opposing force.**
- Therefore, we match **S with 1**.

### Summary of Matches:
- P → 4
- Q → 3
- R → 2
- S → 1

### Final Answer:
The correct option that matches these pairs is **(b)**.