Which of the following compounds is formed as | vedclass

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(A) When borax $(Na_2B_4O_7 \cdot 10H_2O)$ is heated,it loses water of crystallization and swells to form a transparent glassy bead consisting of sodi

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$Co(BO_2)_2$

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(A) When borax $(Na_2B_4O_7 \cdot 10H_2O)$ is heated,it loses water of crystallization and swells to form a transparent glassy bead consisting of sodium metaborate $(NaBO_2)$ and boric anhydride $(B_2O_3)$.When this bead is heated with cobalt oxide $(CoO)$ in an oxidizing flame,it forms cobalt metaborate,which is blue in color.The reaction is as follows:$CoO + B_2O_3 \rightarrow Co(BO_2)_2$ (Cobalt metaborate,blue bead).

Which of the following compounds is formed as a blue bead when borax is heated with cobalt oxide?

Similar Questions

Which one of the following statements is not correct?

Which of the following reactions can be used to prepare diborane?
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$IV. NaBH_4 + I_2 \longrightarrow$

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