MCQ
………..a decomposition reaction.
- ✓$CaCO _3 \stackrel{\Delta}{\longrightarrow} CaO + CO _2$
- B$H _2 O + CO _2 \rightarrow H _2 CO _3$
- C$CaS +2 HCl \rightarrow CaCl _2+ H _2 S$
- D$2 H _2+ O _2 \rightarrow 2 H _2 O$
✓
Answer
Correct option: A.
$CaCO _3 \stackrel{\Delta}{\longrightarrow} CaO + CO _2$
$CaCO _3 \stackrel{\Delta}{\longrightarrow} CaO + CO _2$
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