Home Chemistry General Principles and Processes of Isolation of Elements ( Not In Syllabus ) General Cinnabar (HgS) and galena (PbS) on roasting …
Chemistry General Principles and Processes of Isolation of Elements ( Not In Syllabus ) General Subjective Type
Published on: August 14, 2026

Cinnabar (HgS) and galena (PbS) on roasting often give their respective metals but zinc blende (ZnS) does not. explain.

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Oxide of Pb and Hg are unstable while that of zinc is stable towards heat, therefore, oxides of mercury and lead are reduced by their respective sulphides to the corresponding metals but zinc oxide does not.

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