Answer:
[tex]\begin{gathered} a:\text{ Double Displacement} \\ b:\text{ Single Replacement} \\ c:\text{ Combination} \\ d:\text{ Decomposition} \end{gathered}[/tex]Explanation:
Here, we want to get the type of reactions listed
We proceed to evaluate the reactions one after the other:
a) This is a double replacement reaction. It usually occurs when molecules exchange ions in the course of their reaction leading to replacement in a molecule by an ion or a group of ions in the other molecule
b) This is a single replacement reaction which in other words could be referred to as a displacement reaction. This occurs usually when a metallic solid reacts with a solution of the salt of less reactive metal
c) This is a combination reaction. It is usually useful in the laboratory and industrial synthesis of some molecules
d) This is a decomposition reaction. It occurs when a particular molecule splits into the constituent molecules that make it up