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In borax bead test which compound is for...

In borax bead test which compound is formed ?

A

Ortho-borate

B

Meta-borate

C

Double oxide

D

Tetra-borate

Text Solution

Verified by Experts

The correct Answer is:
B
`Na_(2)B_(4)O_(7).10H_(2)O overset(Delta)underset(-10H_(2)O)rarrNa_(2)B_(4)O_(7)`
`underset("anhydrous")(Na_(2)B_(4)O_(7)) overset (Delta) rarr underset("sod. metaborate")(2NaBO_(2)) + underset("Boric anhydride") (B_(2)O_(3))`
`CuO +B_(2)O_(3) rarr underset("cupric meta borate (Blue beed)")(Cu(BO_(2))_(2))`
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