When did the queen became the queen of the uk?
No context provided
When did Queen Elizabeth II become Queen of the UK?
6 February 1952
No context provided
When did Queen Victoria become Queen of the UK?
20 June 1837
Monarchy of the United Kingdom
https://en.wikipedia.org/wiki/Monarchy%20of%20the%20United%20Kingdom
Elizabeth I of England
https://en.wikipedia.org/wiki/Elizabeth%20I%20of%20England
List of British monarchs
https://en.wikipedia.org/wiki/List%20of%20British%20monarchs
Elizabeth II
https://en.wikipedia.org/wiki/Elizabeth%20II
The current monarch of the United Kingdom is Queen Elizabeth II, who ascended the throne in 1952.
Monarchy of the United Kingdom
She has reigned as a constitutional monarch through major political changes, such as devolution in the United Kingdom, accession of the United Kingdom to the European Communities, Brexit, Canadian patriation, and the decolonisation of Africa.
Elizabeth II
Elizabeth is the longest-lived and longest-reigning British monarch, the longest-serving female head of state in world history, the world's oldest living monarch, longest-reigning current monarch, and oldest and longest-serving current head of state.
Elizabeth II
Victoria (Alexandrina Victoria; 24 May 1819 – 22 January 1901) was Queen of the United Kingdom of Great Britain and Ireland from 20 June 1837 until her death in 1901. Known as the Victorian era, her reign of 63 years and seven months was longer than any previous British monarch. It was a period of industrial, political, scientific, and military change within the United Kingdom, and was marked by a great expansion of the British Empire. 
Queen Victoria
The current monarch of the United Kingdom is Queen Elizabeth II, who ascended the throne on 6 February 1952. She has reigned as a constitutional monarch through major political changes, such as devolution in the United Kingdom, accession of the United Kingdom to the European Communities, Brexit, Canadian patriation, and the decolonization of Africa. Elizabeth is the longest-lived and longest-reigning British monarch as well as the oldest and longest-serving current head of state. Queen Victoria became the Queen of the United Kingdom on 20 June 1837 and remained Queen until her death in 1901. Known as the Victorian era, her reign of 63 years and seven months was longer than any previous British monarch. It was a period of industrial, political, scientific, and military change within the United Kingdom, and was marked by a great expansion of the British Empire.