The liquid field metal expanding on solidification is
$Ga$
$Al$
$Zn$
$Cu$
Anhydrous $AlC{l_3}$ is obtained from
Which hydroxides of group $13$ are amphoteric in nature ?
Aluminium trifluoride is insoluble in anhydrous $HF$ but dissolves on addition of $NaF$. Aluminium trifluoride precipitates out of the resulting solution when gaseous $BF_3$, is bubbled through. Give reasons.
During the borax bead test with $CuSO _4$, a blue green colour of the bead was observed in oxidising flame due to the formation of
Which one of the following is correct statement