MCQ
- A$CaCO _3+ H _2$
- B$CO _2+ H _2 O + Ca$
- ✓$HCHO + CaCO _3$
- D$CO + H _2 O + Ca ( OH )_2$
✓
Answer
Correct option: C.
$HCHO + CaCO _3$
$HCHO + CaCO _3$
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