Menu
Home / General Knowledge / General Science :: Discussion

Discussion :: General Science

  1. The percentage of oxygen present in air is approximately-

    2. A.

     44%
    B.

     23%
    C.

     40%
    D.

     21%

    View Answer

    Workspace

    View Answer

    Answer : Option D

    Explanation :

    21%.

Write your comments here:

Be The First To Comment