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2 of 7 〉
The hardest substance available on earth is
diamond
3 of 7 〉
Washing soda is the common name for
sodium carbonate
4 of 7 〉
The gas usually filled in the electric bulb is
nitrogen
5 of 7 〉
Chemical formula for water is.
h2o
6 of 7 〉
Graphite most use in?
pencils
7 of 7 〉
Brass gets discoloured in air because of the presence of which of the following gases in air?
Hydrogen sulphide
8 of 7 〉
which of the following is a non metal that remains liquid at room temperature?
bromine
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Physiology or medicine Nobel Prize Laureates 2019 
political science Questions | GK One Liners