In borax,the number of $B-O-B$ links and $B-OH$ bonds present are,respectively:

The correct formula of borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$. If the formula is represented as $Na_2[B_4O_5(OH)_x] \cdot yH_2O$,then the sum of $x$ and $y$ is:

What is produced upon the hydrolysis of $AlCl_3$?

The reason for boric acid being polymeric is .....

Which of the following reactions can be used to prepare diborane?
$I. BF_3 + LiAlH_4 \xrightarrow{\text{ether}}$
$II. BF_3 + NaH \xrightarrow{450 \ K}$
$III. Na_2B_4O_7 + H_2O \longrightarrow$
$IV. NaBH_4 + I_2 \longrightarrow$

What is the formula for meta-boric acid?