Question:
Bray's No. 1 reagent consists of mixture of:
Bray's No. 1 reagent consists of mixture of:
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Bray's No. 1: 0.03N NH\(_4\)F + 0.025N HCl.
Used for phosphorus extraction in acidic soils.
Bray's No. 2 has higher acid concentration.
Used for phosphorus extraction in acidic soils.
Bray's No. 2 has higher acid concentration.
Updated On: Aug 18, 2026
- 0.03N NH\(_4\)F + 0.025N HCl
- 0.3N NH\(_4\)F + 0.025N HCl
- 0.03N NH\(_4\)F + 0.25N HCl
- 0.3N NH\(_4\)F + 0.25N HCl
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Bray's No. 1 reagent is used for soil phosphorus extraction.
It is a specific mixture of chemicals.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the composition of Bray's No. 1 reagent.
Step 3: Detailed Explanation:
Bray's No. 1 reagent consists of 0.03N NH\(_4\)F and 0.025N HCl.
It is used for acidic soils.
The fluoride ion helps in phosphorus extraction.
Other concentrations are not used for Bray's No. 1.
Thus, the correct composition is 0.03N NH\(_4\)F + 0.025N HCl.
Step 4: Final Answer:
Bray's No. 1 reagent is 0.03N NH\(_4\)F + 0.025N HCl.
Hence, the correct option is (A).
Bray's No. 1 reagent is used for soil phosphorus extraction.
It is a specific mixture of chemicals.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the composition of Bray's No. 1 reagent.
Step 3: Detailed Explanation:
Bray's No. 1 reagent consists of 0.03N NH\(_4\)F and 0.025N HCl.
It is used for acidic soils.
The fluoride ion helps in phosphorus extraction.
Other concentrations are not used for Bray's No. 1.
Thus, the correct composition is 0.03N NH\(_4\)F + 0.025N HCl.
Step 4: Final Answer:
Bray's No. 1 reagent is 0.03N NH\(_4\)F + 0.025N HCl.
Hence, the correct option is (A).
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