SSC Sample Paper SSC (Group-C) Sample Test Paper-4

  • question_answer Nitrogen is available for plants in the form of:

    A)  Nitrogen gas  

    B)  Nitrogen dioxide

    C)  Nitrate           

    D)  Nitric acid

    Correct Answer: C

    Solution :

     Nitrogen is present in the environment as organic nitrogen, ammonium, nitrite, nitrate, nitrous oxide, nitric oxide or inorganic nitrogen gas. Nitrogen is available to plants as either ammonium \[(N{{H}_{4}}^{+})\] or nitrate \[(N{{O}_{3}}^{-})\]. Chemical processing or natural fixation (bacterial conversion) is necessary to convert gaseous nitrogen into compounds such as nitrate or ammonia which can be used by plants.

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