| Question | Answer | % Correct |
|---|---|---|
| Colour on map | black | 99%
|
| Southernmost station | Morden | 82%
|
| Biggest station on the line | King's Cross | 75%
|
| Name of the station serving the famous cricket ground in South London | Oval | 69%
|
| Busiest station intersected by the line | Waterloo | 57%
|
| Number of stations | 50 | 53%
|
| Deepest station below ground level (41.5 metres) | Hampstead | 41%
|
| Opened | 1890 | 30%
|
| Year the line reached Mill Hill East | 1941 | 20%
|
| Line length (miles) | 36 miles | 2%
|