`Ca_(2)B_(6)O_(11)+Na_(2)CO_(3) overset(Delta)rarr[X]+CaCO_(3)+NaBO_(2)` ( unbalanced equation) correct choice for [X] is :A. Structure of anion of crystalline [X] has one boron atom `sp^(3)` hybridised and other three boron atoms `sp^(2)` hybridised.B. (X) with NaOH (aq.) gives a compound which on reaction with `H_(2)O_(2)` in alkaline medium yields a compound used as brightner in soapsC. Hydrolysis of (X) with HCl or `H_(2)SO_(4)` yields a compound which on reaction with HF gives fluoroboric acidD. [X] on heating with cobalt salt in oxidising flame give blue coloured bead

`Ca_(2)B_(6)O_(11)+Na_(2)CO_(3) overset(Delta)rarr[X]+CaCO_(3)+NaBO_(2

1.	`Ca_(2)B_(6)O_(11)+Na_(2)CO_(3) overset(Delta)rarr[X]+CaCO_(3)+NaBO_(2)` ( unbalanced equation) correct choice for [X] is :A. Structure of anion of crystalline [X] has one boron atom `sp^(3)` hybridised and other three boron atoms `sp^(2)` hybridised.B. (X) with NaOH (aq.) gives a compound which on reaction with `H_(2)O_(2)` in alkaline medium yields a compound used as brightner in soapsC. Hydrolysis of (X) with HCl or `H_(2)SO_(4)` yields a compound which on reaction with HF gives fluoroboric acidD. [X] on heating with cobalt salt in oxidising flame give blue coloured bead
Answer» Correct Answer - B::C::D

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