The reaction of $\mathrm{H}_{3} \mathrm{N}_{3} \mathrm{B}_{3} \mathrm{Cl}_{3}$ $(A)$ with $\mathrm{LiBH}_{4}$ in tetrahydrofurane gives inorganic benzene $(B)$. Further, the reaction of $(A)$ with $(C)$ leads to $\mathrm{H}_{3} \mathrm{N}_{3} \mathrm{B}_{3}(\mathrm{Me})_{3}$. than Compounds $(\mathrm{B})$ and $(\mathrm{C})$ respectively, are

The incorrect statement from the following for borazine is:

Given below are two statements :

Statement $I:$ Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.

Statement $II:$ The green colour observed is due to the formation of copper(I) metaborate.

In the light of the above statements, choose the most appropriate answer from the options given below :

Write balanced equations for:

$(i)$ $BF _{3}+ LiH \rightarrow$

$(ii)$ $B _{2} H _{6}+ H _{2} O \rightarrow$

$(\text { iii }) NaH + B _{2} H _{6} \rightarrow$

$(i v) H_{3} B O_{3} \stackrel{\Delta}{\longrightarrow}$

$( v ) Al + NaOH \rightarrow$

$( v i ) B _{2} H _{6}+ NH _{3} \rightarrow$

In the extraction of aluminium, bauxite is dissolved in cryolite because