QJEEAdv18Chc690: JEE Advanced 2018 Chemistry - Class 12 JEEAdv18Chc690 Solution: Galena (an ore) is partially oxidized by passing air through it …

Galena (an ore) is partially oxidized by passing air through it at high temperature. After some time, the passage of air is stopped, but the heating is continued in a closed furnace such that the contents undergo self-reduction. The weight (in kg) of $$Pb$$ produced per kg of $$O_2$$ consumed is ___________.

(Atomic weights in $$gmo{l}^{-1}:O=16,S=32,Pb=207$$)