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20 May, 15:11

Which element is required for the combustion of fossil fuels? nitrogen hydrogen oxygen carbon

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Answers (2)
  1. 20 May, 15:28
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    Hydrogen fuel is a zero emission that uses electrochemical cells or combustion in internal engines to propel vehicles and electrical devices. It is also used in the propulsion of spacecraft and can potentially be mass produced and marketed for use in land vehicles of passengers and aircraft.

    Hydrogen is located in the first group and the first period of the periodic table is the first element of the periodic table, making it the lightest element in the universe. Hydrogen is neither a metal nor a non-metal but it is still considered a non-metal. It acts like a metal when it is compressed at high densities.

    Since hydrogen gas is so light, it rises in the atmosphere and therefore is rarely found in its pure form.
  2. 20 May, 15:31
    0
    Option C, oxygen

    Explanation:

    Fossil fuels burns in the presence of oxygen to release oxides of various forms.

    Some example of burning/combustion of fossil fuels are -

    a) Coal oxidizes in the presence of oxygen to release carbon dioxide.

    b) Natural gas primarily consists of methane. It burns in the presence of oxygen to form CO2

    c) Oil in the automobils is also a fuel made up of C, H and O and it burn in the presence of oxygen to produce carbon dioxide/CO2 from carbon, nitrous oxide/NO2 from nitrogen and sulfur dioxide/SO2 from sulphur

    Thus, it is clear that fossil fuel need oxygen fro combustion.
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