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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-2

  • question_answer
    Which one of the following is not a constituent of biogas?

    A)  Methane         

    B)  Carbon dioxide          

    C)  Hydrogen      

    D)  Nitrogen dioxide        

    Correct Answer: D

    Solution :

    Nitrogen dioxide \[\left( N{{O}_{2}} \right)\] is not a component of biogas.


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