MCQ
………is a combination reaction.
- A$Cu + H _2 SO _4 \rightarrow CuSO _4+ H _2$
- ✓$H _2+ Cl _2 \rightarrow 2 HCl$
- C$2 HgO \stackrel{\Delta}{\longrightarrow} 2 Hg + O _2$
- D$CaCO _3 \stackrel{\Delta}{\longrightarrow} CaO + CO _2$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.