In the Hoope's process for refining of aluminium, the fused materials form three different layers and they remain separated during electrolysis also. This is because

  • A

    The upper layer is kept attracted by the cathode and the lower layer is kept attracted by the anode

  • B

    There is special arrangement in the cell to keep the layers separate

  • C

    The $3$ layers have different densities

  • D

    The $3$ layers are maintained at different temperatures

Similar Questions

Give important trends and anomalous properties of boron. 

Explain structures of diborane and boric acid. 

$Be$ and $Al$ exhibit many properties which are similar, but the two elements differ in :

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.

Assertion $A$ : Boric acid is a weak acid

Reason $R$ : Boric acid is not able to release $H ^{+}$ion on its own. It receives $OH ^{-}$ion from water and releases $H ^{+}$ion.

In the light of the above statements, choose the most appropriate answer from the options given below.

  • [JEE MAIN 2022]

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