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In purification of bauxite ore, it is mi...

In purification of bauxite ore, it is mixed with coke and heated at `1800^(@)C` in presence of nitrogen, this is `:`

A

Hall's process

B

Serpeck's process

C

Baeyer's process

D

Electrolytic reduction.

Text Solution

Verified by Experts

The correct Answer is:
2
Serpeck's method is
`Al_(2)O_(3).2H_(2)O+3C+N_(2)overset(1800^(@)C)rarr 2AIN+3CO+2H_(2)O`
`2AIN+3H_(2)Orarr Al(OH)_(3)darr +NH_(3)`
`2Al(OH)_(3)overset(1473K)rarrAl_(2)O_(3)+3H_(2)O`
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Knowledge Check

  • Ag_(2)S ore Is mixed with NaCl and heated in the presence of air then products formed are

    A
    `AgCl+Na_(2)SO_(4)`
    B
    `AgCl+Na_(2)S`
    C
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    D
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    B
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    C
    `AgCl+SO_(2)`
    D
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  • When ore is heated generally in presence of air, then process is called

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    smelting
    B
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    D
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    Cost iron is prepared from haematite . In most of the Cases ore needs no concentration ,The ore is roasted to remove the volatile impurities ,During roasting the ,mass becomes porous Iron in the form of ferrous oxide os mixed with coke and heated in a blast furnace ,pig iron ios formed and is casted in the desired shape. the approximate wight percent of coke preesent in the charge of blast furnace is

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