Make a project report on types of chemical reaction , corrosion , rancidity .This is given in holiday how i can make and reapare and what is project report ?

You have to explain all these in detail that would be your project report.
For eg.- Explain all types of reaction with examples 
Combination reaction, displacement reaction, decomposition reaction , double displacement reaction and redox reactions.
Corrosion will include its definition, reaction, reason why it occurs, and prevention. ​In the same way, you have to explain rancidity.