MCQ
Which of the following reactions is called roasting ?
- A$ZnCO _3(s)$ $\xrightarrow{\Delta} ZnO ( s )+ CO _2(g)$
- ✓$2 ZnS ( s )+3 O _2$ (g) $\xrightarrow{\Delta} 2 ZnO ( s )+2 SO _2(g)$
- C$ZnO ( s )+ C (s)$ $\xrightarrow{\Delta} Zn ( s )+ CO ( g )$
- D$Zn ( s )+ H _2 O ( g ) \xrightarrow{\Delta} ZnO ( s )+ H _2(g)$