Answer:
d. Decomposition
Step-by-step explanation:
Reversible changes -
As the name suggests the the changes which can be reversed back to the original compound , is referred to as reversible changes .
All the physical changes are reversible in nature .
For example ,
Melting of ice , as the ice is melted from solid to liquid form , the liquid can again be converted back to solid , by reducing the temperature .
- The process of hydration and dehydration are exactly opposite to each other ,
- As hydration refers to the addition of water on to the system , where as dehydration refers to the process of removing water from the system ,
Hence , the changes are reversible in nature .
- Decomposition is the process of break down of the chemical species into two or more species .
The species can not be further merged back to get back the original compound , hence is not a reversible change .