Who invented the contact lens?
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Which of these Indians has not won a Nobel Award?
Who was the Guru of the music maestro Tansen?
Who amongst the following was the successor of Sikh Guru Har Krishan?
India's first official census operation was undertaken in which year?
Battle of Haldighati in 1576 was fought between Akbar and _______.
Ashoka was a king of which dynasty?
The term "Doab" means