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In Borax bead test the coloured ions giv...

In Borax bead test the coloured ions give characteristic coloured beads due to formation of

A

metal borates

B

metal metaborates

C

metal phosphates

D

metal tetraborates

Text Solution

Verified by Experts

The correct Answer is:
B
`{:(Na_(2)B_(4)O_(7).10H_(2)O overset("heat")rarrNa_(2)B_(4)O_(7)+10H_(2)O),("Borax " darr "heat"),(" "2NaBO_(2)+B_(2)O_(3)),(" Bead"):}`
e.g., `CuSO_(4) overset("heat")rarr CuO+SO_(3)`
`CuO+B_(2)O_(3) rarr CU(BO_(2))_(2)` Copper metaborate
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