No. Water is H2O. It doesn't have carbon and hence will never form carbon dioxide.
Sucrose
Yes, sucrose is the reactant.
the metal carbonate decomposes into a metal oxide and carbon dioxide
It decomposes into calcium oxide and carbon dioxide
Yes, sucrose is the reactant.
Copper Carbonate when heated decomposes to give copper oxide and carbon dioxide.
Because it decomposes to form carbon dioxide and barium oxide.
It decomposes into calcium oxide and carbon dioxide...
Lead dioxide decomposes upon getting heated.
It decomposes into calcium oxide and carbon dioxide...
Heating of limestone is a decomposition reaction as limestone decomposes to give calcium oxide and carbon dioxide.
No, baking soda decomposes when heated to produce carbon dioxide which will extinguish the flame.