AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
The Congress of Vienna (1815) was hosted by the Austrian Chancellor Duke Metternich.
Source: Chapter 1, Section 2.3 (A New Conservatism after 1815)
The passage directly states: "The Congress was hosted by the Austrian Chancellor Duke Metternich." For a 1-mark question, just naming the host (Duke Metternich / Austrian Chancellor Metternich) is sufficient. Avoid writing unnecessary extra details.