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NEET2002ChemistryPractical ChemistryActual

In the borax bead test, which compound is formed?

Options

  1. AOrthoborate
  2. BMetaborate
  3. CDouble oxide
  4. DTetraborate

Correct answer

B. Metaborate

Step-by-step solution

In borax bead test the coloured Metaborates are formed by transition metal salts. aligned Na ₂ ~B ₄ O ₇ & 2 NaBO ₂+ B ₂ O ₃ Salt of Co & CoO + gas CoO + B ₂ O ₃ & Co ( BO ₂ )₂ & array c cobalt metaborate (blue colour) array aligned

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