Which of following is not correctly matched

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General Principles and processes of Isolation of Elements

hard

Which of the following is not correctly matched

A

$ZnCO_3$ $R$ $Zn$

Calcination followed by
smelting

B

$Al(OH)_3$ $R$ $Al$

Calcination followed by
electrolytic reduction

C

$PbS$ $R$ $Pb$

Partial roasting followed
by self reduction

D

$Cu_2S$ $R$ $Cu$

Roasting followed by
carbon reduction

Solution

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Standard 12

Chemistry

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