Elements of Groups 16, 17 and 18 — Chemistry STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryElements of Groups 16, 17 and 182 Marks
Question
How is oxygen prepared by thermal decomposition of certain metallic oxides?
✓
Answer
(i) $2 Ag _2 O _{( s )} \xrightarrow{\text { heat }} 4 Ag + O _{2( g )}$ (ii) $2 HgO _{\text {(s) }} \xrightarrow{\text { heat }} 2 Hg + O _{2( g )}$ (iii) $2 PbO _{2( s )} \xrightarrow{\text { heat }} 2 PbO _{( s )}+ O _{2( g )}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.