Answer: A. synthesis or combination reaction
B. Double replacement reaction
C. Single replace ment reaction
D. Combustion
E. Decomposition
Explanation: A is synthesis since A + B --> AB. It produces a single product
B. is double replacement since Ca replaces Al and vice versa
C is single replacement where Mg kicks out Fe in the product formation
D is combustion where a hydro carbon rteacts with oxygen gas to form CO2 and H2O
E is decomposition ( AB) ---> A + B
