Earlier quoted context omitted.
I don't know whether this is an entrance exam and that would definitely change things. But either way, according to Wikipedia, dueling was a part of British culture though the early 1800s, the last fatal duel was in 1856. Meaning a typical candidate from an elite family in 1899 will have a living relative who has probably at least read public discourse about dueling, and there's a good chance the subject has come up…
Scotland's last-ever duel with swords was fought in the same year: 1899. "Swords were drawn and blood was spilled over the election battle of the University Rector." It was in a semi-public place (the Glasgow University Union building) and may have been reported at the time. Thus, duelling may have been in the news at the time. http://www.theguu.com/about/history/
"It found no other mention of the event in contemporary university records, newspapers or court summaries."
http://news.scotsman.com/education/Hit-and-myth-Was-Scotland...