On dipping a loop of platinum wire in borax paste and heating the wire subsequently in hotoxidising flame, produces a colourless, transparent, glass-like bead. The bead contains:

On dipping a loop of platinum wire in borax paste and heating the wire

1.	On dipping a loop of platinum wire in borax paste and heating the wire subsequently in hotoxidising flame, produces a colourless, transparent, glass-like bead. The bead contains:
Answer» `H_(3)BO_(5)` `NaBO_(2)` `B_(2)O_(3)` `Na_(2)B_(4)O_(7)` ANSWER :B::C