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JEE Advanced 2018 Paper 2

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Question : 26

Total: 54

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 furnance such that the contents undergo self-reduction. The weight (in kg) of Pb produced per kg of O2 consumed is ________.
(Atomic weights in g mol−1: O = 16,S = 32,Pb = 207)

[JEE Adv 2018 P2]

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