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Fe2O3
Fe3O4
2Fe2O3
FeCO3
Main pollutant present in automobile exhaust is
Major gaseous pollutant of the thermal power station is
Man dies in the atmosphere of CO, because it
Many marine animals use _ dissolved in sea-water to make their shells.
Many microbes can effect the chemical process of
Mark the compound which possesses ionic, covalent & coordinatebonds.
Marsh gas mainly contains
Mass of electron is
Methane contributes towards global warming so it is called a _ gas.
Misch metal is widely used in manufacture of which of the following