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      Question

      Brays No. 1 reagent consists of mixture of

      A 0.03 NNH_4F+0.025 NHC1 Correct Answer Incorrect Answer
      B 0.3 NNH_4F+0.025 N HC1 Correct Answer Incorrect Answer
      C 0.03 NNH_4F +0.25 N HC1 Correct Answer Incorrect Answer
      D 0.3 N NH_4F +0.25 NHC1 Correct Answer Incorrect Answer

      Solution

      Brays no.1 reagent is used for P determination in acid to neutral soils. It consists of a mixture of 0.025 N HCl and 0.03 N NH4F

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