Which Indian won a Nobel Peace Prize in 2014?
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Name the first Indian to get Bharat Ratna posthumously.
The boundary between Earth's crust and mantle is _____.
Which is used as an Air pollution indicator?
Tamarindus indica is the scientific name of ________.
What is the sound made by seal called?
Who has been appointed as the Secretary General of the United Nations in January, 2017?
The absolute refractive index of air is