The common name of dichlorodifluoromethane is _____.
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There are ............ metalloids in the modern periodic table.
What is the process of rust forming on iron called?
Which among the following metal is used for galvanization?
Name the acid present in lemon.
........... is not a sub atomic particle of an atom.
Atomic number of which of the following elements is greater than that of Copper?
What is contained in Chlorophyll ?
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