MCQOPTIONS
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| 1. |
0.03 N, NH4 F + 0.025 N, NCl, is called: |
| A. | Bray No. 1 extractant |
| B. | Olsen extractant |
| C. | Bray No. 2 extractant |
| D. | None of these |
| Answer» B. Olsen extractant | |