AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
The four European powers that met at Vienna in 1815 were Britain, Russia, Prussia, and Austria, who had collectively defeated Napoleon. The Congress was hosted by Austrian Chancellor Duke Metternich.
Source: Chapter 1, Section 2.3 – A New Conservatism after 1815
The question is straightforward and fact-based. Simply name the four powers — Britain, Russia, Prussia, Austria — as stated directly in the passage. Adding Metternich as host is a bonus detail that strengthens the answer within the word limit. No extra elaboration is needed for 1 mark.