| 1964 | Science & Nature | Multiple Choice | Easy | The human heart has how many chambers? |
| 1965 | Science & Nature | Multiple Choice | Hard | Which moon is the only satellite in our solar system to possess a dense atmosphere? |
| 1966 | Science & Nature | Multiple Choice | Medium | The human right lung has how many lobes? |
| 1967 | Science & Nature | Multiple Choice | Easy | The element involved in making human blood red is which of the following? |