Who Invented Post-it note?
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In April 2017, who has been made United Nation's Messenger of Peace?
Find the odd word/letters/number pair from the given alternatives.
The Shaka Era was founded in the year________.
Total number of countries in the world are
Which compound is used in Anti-malarial drug?
Atomic Number of Hydrogen is _______.
What happens as we go down the group in the periodic table?