1. Tardigrade
  2. Question
  3. Chemistry
  4. Mien borax is heated dining borax bead test along with CoO (Cobalt Oxide) on a loop of platinum (Pt) wire, it swells up and produces a blue colored bead. Which of the following compounds is responsible for the blue color?

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Q. \Mien borax is heated dining borax bead test along with CoO (Cobalt Oxide) on a loop of platinum (Pt) wire, it swells up and produces a blue colored bead. Which of the following compounds is responsible for the blue color?

TS EAMCET 2018

Solution:

Correct answer is (c) $\ce{CO(BO_2)_2}$