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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
    `AgCl+SO_(2)`
    D
    `Ag+SO_(2)`

  • 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
    `AgCl+SO_(2)`
    D
    `Ag+SO_(2)`

  • When ore is heated generally in presence of air, then process is called

    A
    smelting
    B
    roasting
    C
    calcination
    D
    none
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