| COLUMN I | COLUMN II | ||
| 1 | Thomson | A | Orbits |
| 2 | Rutherford | B | Plum Pudding Model |
| 3 | Paschen | C | X-Rays |
| 4 | Bohr | D | Nucleus |
| 5 | Roentgen | E | Spectral Lines |
Answer & explanation
Correct answer: option 2
The LHS is the scientists names and RHS is the discovery that they are associated with.