`n`-Hexane on prolonged heating with a mixture of `Al_(2)O_(3)` and `Cr_(2)O_(3) at 600^(@)C` gives

n -Heptane on prolonged heating with a mixture of Al_(2)O_(3) and Cr_(2)O_(3) at 600^(@)C gives mainly

A mixture of Al_(2)O_(3) and Fe_(2)O_(3) can be separated by using

A mixture of Al_(2) O_(3) and Fe_(2) O_(3) can be separa-ted by using

The product obtained on heating n-heptane with Cr_(2)O_(3),Al_(2)O_(3) at 3600^(@)C is

Aromatisation of n-heptane by passing over (Al_(2)O_(3)+Cr_(2)O_(3)) catalyst at 773 K gives

K_(2)Cr_(2)O_(7) , on heating gives

Which aromatic compound is obtained when noctane undergoes catalytic hydroforming (Aromatization ) on heating with Al_(2)O_(3) + Cr_(2)O_(3) .