Which of the following elements has the lowest melting point?
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In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as
In an acid base reaction which product is produced along with a salt?
............ element is represented by the given symbol.
Which of the following gases is known as "Laughing Gas"?
Who formulated ‘the atomic theory’ of a matter?
The atoms of the elements having same difference between mass number and atomic number are called ______.
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