A positive brown ring test indicates the presence of

  • A NO 3
  • B Fe 3+
  • C SO 2-3
  • D CU+
  • E NO- 2
waec 1995chemistry

The correct answer is A. NO 3

Brown ring test is used for the detection of nitrate ions in a solution. As the name suggests it detects presence of nitrate ions by formation of brown ring

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