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  1. The chief source for the production of nitrogeneous fertilizers is :

    2. A.

     Ammonia
    B.

     Nitric acid
    C.

     Nitrogen
    D.

     Nitrogen dioxide

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    Answer : Option A

    Explanation :

    Nitrogen fertilizers are often made using the HaberBosch process which uses natural gas (CH4+) for the hydrogen and nitrogen gas from the air at an elevated temperature and pressure in the presence of a catalyst to form ammonia as the end product. This ammonia is used as a feedstock for other nitrogen fertilizers, such as anhydrous ammonium nitrate and urea.

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