MolSynapsequestion bank

MolSynapse / Question bank / p-Block Elements: Groups 13 and 14 / Aluminium compounds and alums

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3pb144

Select the correct statement(s) about the electrolytic extraction of aluminium.

AThe carbon anode is consumed, forming CO and $CO X_{2}$ .
BMolten Al collects at the graphite-lined cathode.
CCryolite lowers the temperature needed for electrolysis.
DAluminium is liberated at the anode.

Answer: A, B, C

At the anode oxide ions are oxidised and react with carbon to give CO and

CO X_{2}

(A true). Al

^{3 +}

is reduced at the cathode (B true, D false). Cryolite lowers the melting point (C true).

Practice p-Block Elements: Groups 13 and 14 More on Aluminium compounds and alums

Previous questionNext question

More questions on Aluminium compounds and alums

In Baeyer's process for purifying bauxite, which description is correct? JEE Advanced level
Assertion (A): Aluminium vessels can be used to transport conc. HNO3. Reason (R): Conc. HNO3 forms a thin, tough, protective oxide layer on ... JEE Advanced level
A salt solution gives a white gelatinous precipitate with aqueous ammonia that does not dissolve in excess; the precipitate dissolves in exc... JEE Advanced level
Select the correct statement(s) about the reactions of aluminium. JEE Advanced level
Select the correct statement(s). JEE Advanced level