Match Column-I and Column-II and choose the correct match from the given choices.
| Column-I | Column-II |
|---|---|
| (A) Root mean square speed of gas molecules | (P) |
| (B) Pressure exerted by ideal gas | (Q) |
| (C) Average kinetic energy of a molecule | (R) |
| (D) Total internal energy of 1 mole of a diatomic gas | (S) |