The chemical formula of Propane is
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___ is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.
Which of the following is NOT a radioactive element?
Chemical properties of isotopes .............
Select the INCORRECT set of Molecular Formula - IUPAC Name - Common Name from the following options.
By volume, 78% of air is _______________
CuO + H2 ---> Cu + H2O. This equation is an example of
According to an early Indian philosopher everything is made up of ___ basic elements.
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