Breaking of lead bromide into lead and bromine is an example of ________.

Correct option is C

The correct answer is (c) Decomposition reaction.
· The breaking down of lead bromide (PbBr₂) into lead (Pb) and bromine (Br₂) is an example of a decomposition reaction. In this type of reaction, a compound breaks down into two or more simpler substances.
Decomposition Reaction:
· A decomposition reaction involves breaking down a single compound into simpler products. In the case of lead bromide (PbBr₂), when it undergoes electrolysis (or heat decomposition), it decomposes into lead (Pb) and bromine (Br₂).
PbBr₂→Pb+Br₂
This is a clear example of a compound being broken down into its constituent elements, which characterizes a decomposition reaction.
Other Types of Reactions:
· Displacement reaction (Option a): In a displacement reaction, one element displaces another in a compound. This is not the case here.
· Synthesis reaction (Option b): A synthesis reaction involves combining two or more simple substances to form a compound, the opposite of what happens in a decomposition reaction.
· Neutralisation reaction (Option d): A neutralization reaction occurs between an acid and a base to form salt and water. This does not apply to the breaking down of lead bromide.