Qualitative Analysis - Result Question 65
68. In the following reaction, identify the compounds/reaction conditions represented by the alphabets $A$ and $B$.
$PbS \xrightarrow[\text { air }]{\text { Heat in }} A+PbS \xrightarrow{B} Pb+SO _2$
(1991, 1M)
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Solution:
$PbS \xrightarrow[\text { air }]{\text { Heat in }} PbO+PbS \xrightarrow[\text { absence of air }]{\text { Heat in }} Pb+SO _2$
BETA
