Which of the following pairs of cations will turn borax beads blue in an oxidising flame? | Qualitative and Quantitative Analysis — Chem-Mantra | Chem-Mantra

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Question

Which of the following pairs of cations will turn borax beads blue in an oxidising flame?

Answer: B

💡 Solution & Explanation

Both Cobalt (Co) and Copper (Cu) salts form blue borax beads in an oxidising flame (Co gives deep blue, Cu gives light blue).

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