Question

give one examples of combination reaction, decomposition reaction, displacement reaction

Answer 1

Combination reaction - C + O2 - - - - - - > CO2
Decomposition reaction - Ca CO3 - - - - - - > Cao + CO2.
Displacement reaction - Fe+ CuSO4 - - - - - - > FeSO4 + Cu.

Answer 2

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* Example of combination reaction
2H2 + O2 _ 2H2O
[ Two or more reactants combine to form single product. ]

* Decomposition reaction :-
NaCl _ Na + Cl
[ When a single compound break down into two or more products.]

* Displacement reaction :-
Zn + CuSO4 _ ZnSO4+ Cu
[ In this more reactive element displaces less reactive element from its aqueous solution. ]


Hope it helps you.