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On heating a borate with ethyl alcohol a...

On heating a borate with ethyl alcohol and cone. `H_(2)SO_(4)`, a green edged flame is noticed. How will you account for it?

A

`(C_(2)H_(5)O)_(3) B`

B

`(C_(2)H_(5))_(2)BO_(2)`

C

`(C_(2)H_(5))_(3)BO_(3)`

D

1 and 3

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