For the electrolytic refining of aluminium, the three fused layers consist of
Bottom Layer |
Middle Layer |
Upper Layer |
Cathode of pure $Al$ |
Cryolite and fluorspar |
Anode of $Al$ and $Cu$ alloy |
Cathode of $Al$ and $Cu$ alloy |
Bauxite and cryolite |
Anode of pure $Al$ |
Anode of $Al$ and $Cu$ alloy |
Cryolite and barium fluoride |
Cathode of pure $Al$ |
Anode of impure $Al$ |
Bauxite, cryolite and fluorspar |
Cathode of pure $Al$ |
The hardest substance amongst the following is
Give general information of elements of $p-$ block.
The incorrect stability order of $+3$ and $+1$ states of $13^{th}$ group elements (boron family) is
Which one of the following is the correct statement ?
$(i)\,Al\,\xrightarrow{{{N_2}}}\,A$ $(ii)\,Al\,\xrightarrow{c}\,B$
Here $A$ and $B$ on hydrolysis respectively gives