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Hoop's process of purification of alumin...

Hoop's process of purification of aluminium involves formation of layers during electrolysis. It involves:

A

the three layers have same densities but different materials.

B

the three layers have different densities.

C

the upper layer is of pure aluminium which acts as a cathode.

D

the bottom layer is of impure aluminium which acts as an anode and middle layer consists of cryolite and `BaF_2` .

Text Solution

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The correct Answer is:
B, C, D
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Knowledge Check

  • Hoop's process of purification of aluminium involves formation of layers during electrolysis. This is because [True/False (T = True, F= False)] (i) the three layers have same densities but different materials (ii) the three layers have different densities (iii) the upper layer is of pure aluminium which acts as a cathode (iv) the bottom layer is of impure a aluminium which acts as an anode and middle layer consists of NaF, BaF_(2) and AlF_(3)

    A
    FTTF
    B
    FTTT
    C
    TTFT
    D
    FFTF

  • Back bonding involves the formation of

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    Coordinate bond
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    `pi` bond
    D
    None of these.

  • sc RNA is involved in formation of

    A
    Polypeptide over ribosome
    B
    Signal recognition ribosome
    C
    tRNA
    D
    Peptide bond formation.

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