MEDIUMMCQ SINGLENEET ChemistryInorganic Chemistryp-Block (group 13 and 14)Previous Year Questions
In borax bead test which compound is formed? (Punjab PMET 2007)
A.Ortho borate
B.Meta borate✓ Correct
C.Double oxide
D.Tetra borate
Explanation
Borax bead test is used to identify cations by qualitative analysis. When borax is heated at , it leads to the formation of a glassy bead and it gives different colour B X N N: B B N X H H H H B X N N: B B N H X H H H B X N N: B B N X H H H X B X N N: B B N H H H H X H 59 p-BLOCK (Group 13 - 14) beads with different cations. The following reaction is shown below: NaBO2 is Sodium Metaborate. Hence, the correct option is (b).
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