| List -I | List-II | ||
| A | Diamagnetic solid | I | CrO2 |
| B | Ferromagnetic solid | II | Fe3O4 |
| C | Antiferomagnetic solid | III | NaCl |
| D | Ferrimagnetic solid | IV | MnO |
Rearrange the following parts to form a meaningful and grammatically correct sentence:
P. a healthy diet and regular exercise
Q. are important habits
R. that help maintain good physical and mental health
S. especially in today's busy world