The hardest natural substance is
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One of the most destructive volcanoes in recent times has been the Kilauea volcano.Where is it located?
The work done in one complete revolution of the moon around the earth is equal to
The sensation of sound persists in the human brain for about:
What was the theme of 48th annual meeting of the World Economic Forum (WEF) which was held in Davos city?
The nation-wide campaign 'Operation Smile' is related to
Pakistani film industry is known as ___.
A shop keeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of cost price to the printed price of the book is