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      Question

      The percentage of Phosphorus Pentoxide present in night

      soil is:
      A 5.5 Correct Answer Incorrect Answer
      B 4 Correct Answer Incorrect Answer
      C 3.4 Correct Answer Incorrect Answer
      D 2 Correct Answer Incorrect Answer

      Solution

      Night soil is rich in nitrogen, phosphorus, and potassium, containing on average 5.5 percent N, 4.0 percent Pβ‚‚O_5, and 2.0 percent Kβ‚‚O.

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