In the electrolysis of alumina, cryolite is added to

  • [IIT 1986]
  • A

    Increase the melting point of alumina

  • B

    Increase the electrical conductivity

  • C

    Minimise the anodic effect

  • D

    Remove impurities from alumina

Similar Questions

Alumina is insoluble in water because

$N{a_2}{B_4}{O_7}\xrightarrow{x}{H_3}B{O_3}\xrightarrow{\Delta }{B_2}{O_3}\xrightarrow{y}B$

Here $X, Y$ are respectively

$AlC{l_3}$ is

Which is true for an element $R$ present in III group of the periodic table

Which reaction involves a change in the electron pair geometry for the underlined element ?