Q 1. What are the advantages of oops ?

Q 2. What are the loop types in c# ?

Q 3. What is “Boxing” and “Unboxing” ?

Q 4. What is Garbage Collection(GC) ?

Q 5. What is the difference between Overloading and Overriding ?

Q 6. What is the difference between “is” and “as” operators ?

Q 7. What is the difference between Array and ArrayList ?

Q 8. What are Nullable types ?

Q 9. What is the difference between “out” and “ref” parameters ?

Q 10. Why even create Interface ?

Q 11. What is the purpose of the “params” keyword ?

Q 12. Can you have only a “try” block without a “catch” block ?

Q 13. How to prevent a class from being Inherited ?

Q 14. What is “this” keyword in c# When to use it ?

Q 15. What is the difference between “String” and “StringBuilder” ?When to use what ?

Q 16. What are the different types of Inheritance ?

Q 17. What is the difference between “Readonly” and “Constant”variables ?

Q 18. What is polymorphism and what is its type ?

Q 19. What is the difference between “Continue” and “break” statement ?

Q 20. What is method overloading?In how many ways can a method be overloaded?

Q21. What is the purpose of “using” keyword in c# ?

Q 22. What are access Specifiers?What is the default access modifier in a class?

Q 23. What is the difference between “throw ex” and “through” method ?

Q 24. Do Interfaces have a Constructor ?

Q 25. What is the difference between an Abstract class and an Interface ?