The purification of alumina is called
Bosch process
Caster process
Baeyer's process
Hoop's process
Identify the compounds $A, X$ and $Z$ in the following reactions :
$A + 2HCl + 5{H_2}O \to 2NaCl + X$
$X\xrightarrow[{370\,K}]{\Delta }HB{O_2}\xrightarrow[{ > 370\,K}]{\Delta }Z$
Alumina is insoluble in water because
Taking stability as the factor, which one of the following represents correct relationship?
Heating an aqueous solution of aluminium chloride to dryness will give:
Give name of group $13$ elements.