A layer of coke is spread over bauxite during electrolytic reduction of alumina by Hall-Heroult proc

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p-Block Elements - I

medium

A layer of coke is spread over bauxite during electrolytic reduction of alumina by Hall-Heroult process. This layer acts as a/an:

flux

slag to remove impurities

reducing agent

insulation and does not allow heat to escape

Solution

the correct option is (D)

explanation:

A layer of coke is spread over bauxite during electrolytic reduction of alumina by Hall Heroult process. This layer acts as as insulation by preventing it from corrosion, coke powder is kept at the top which also prevents escape of heat.

Standard 11

Chemistry

Explain the following:

$(1)$ $Tl (NO_3)_2$ acts as an oxidizing agent.

$(2)$ Carbon shows catenation property but lead does not.

hard

What happens when

$(a)$ Borax is heated strongly,

$(b)$ Boric acid is added to water,

$(c)$ Aluminium is treated with dilute $NaOH$,

$(d)$ $BF_3$ is reacted with ammonia?

medium

$STATEMENT$-$1$: In water, orthoboric acid behaves as a weak monobasic acid. because

$STATEMENT$-$2$: In water, orthoboric acid acts as a proton donor.

normal

(IIT-2007)

Draw structure of $Al_2Cl_6$ and give uses of $AlCl_3$.

easy

Which of the following cation can not give borax bead test ?

easy

A layer of coke is spread over bauxite during electrolytic reduction of alumina by Hall-Heroult process. This layer acts as a/an:

Solution

Similar Questions

Explain the following: $(1)$ $Tl (NO_3)_2$ acts as an oxidizing agent. $(2)$ Carbon shows catenation property but lead does not.

What happens when $(a)$ Borax is heated strongly, $(b)$ Boric acid is added to water, $(c)$ Aluminium is treated with dilute $NaOH$, $(d)$ $BF_3$ is reacted with ammonia?

$STATEMENT$-$1$: In water, orthoboric acid behaves as a weak monobasic acid. because $STATEMENT$-$2$: In water, orthoboric acid acts as a proton donor.

Draw structure of $Al_2Cl_6$ and give uses of $AlCl_3$.

Which of the following cation can not give borax bead test ?

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Explain the following:

$(1)$ $Tl (NO_3)_2$ acts as an oxidizing agent.

$(2)$ Carbon shows catenation property but lead does not.

What happens when

$(a)$ Borax is heated strongly,

$(b)$ Boric acid is added to water,

$(c)$ Aluminium is treated with dilute $NaOH$,

$(d)$ $BF_3$ is reacted with ammonia?

$STATEMENT$-$1$: In water, orthoboric acid behaves as a weak monobasic acid. because

$STATEMENT$-$2$: In water, orthoboric acid acts as a proton donor.