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Chemistry

The brown ring test is used for the detection of :

  1. CO32-
  2. Cl-
  3. NO3-
  4. SO32-

Nitric Acid

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Answer

NO3-

Reason — The brown ring test is a qualitative test used to detect the presence of nitrate ions (NO3-) in a solution. A brown ring forms at the junction of the two liquids if nitrate ions are present.

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