$N{a_2}{B_4}{O_7}.10{H_2}O \xrightarrow{\Delta } X + NaB{O_2} + {H_2}O$

$X + C{r_2}{O_3}\xrightarrow{\Delta }Y$ (Green coloured)

$X$ and $Y$ are

  • A

    $Na_3BO_3, Cr(BO_2)_3$

  • B

    $Na_2B_4O_7, Cr(BO_2)_3$

  • C

    $B_2O_3, Cr(BO_2)_3$

  • D

    $B_2O_3, CrBO_3$

Similar Questions

The structure of diborane $({B_2}{H_6})$ contains

  • [AIEEE 2005]

Boron form covalent compound due to

Write balanced equations for : 

$(i)\,B{F_3} + LiH \to $

$(ii)\,{B_2}{H_6} + {H_2}O \to $

$(iii)\,NaH + {B_2}{H_6} \to $

$(iv)\,{H_3}B{O_3}\xrightarrow{\Delta }$

$(v)\,Al + NaOH \to $

$(vi)\,{B_2}{H_6} + N{H_3} \to $

In the electrolytic extraction of aluminium, cryolite is used

Which of the following compounds is formed by addition of mineral acid to an aqueous solution of borax ?