The main difference between standard and class modules is in the way they handle the data.

  Class Module Standard Module
1. In the Class module, objects have their own copies of data. In the Standard module, there is only one copy of the global variable exist.
2. These are implementation of OOPs These are the implementation of procedural language.
3. Public variables can only be accessed if an object variable contains a reference to a particular instance of the class. In the standard module, if a variable is declared Public then it can be visible from anywhere.
4. Inheritance is supported by class module It doesn’t support inheritance.
BY Best Interview Question ON 26 Feb 2022