IQ

OOPS

•  What is Polymorphism & Inheritance ?? where you have implemented in your project. 
•   Explanation about interfaces? Why do you use interface and what are the uses of interfaces?
•    What is Encapsulation & Abstraction???

C#

• What is Generics, Index & garbage collection, explain with the real time scenarios of     implementations?
• What are Delegates & Events
• What is memory management & what is memory leak?
• What is LINQ uses and where we can use LINQ.
• How optional parameters will work for you?
• How do you load memory in XML and C#?
• Exception handling
• What is the new version of C# you are working and what are the new features?
•  In C# how many types of constructors?
• What is static class? – C#
• What is common type system? .net

Asp.net

·        How do we implement authentication and authorization? - As.net

·   What is meant by view state? Tell me few scenarios where you used view state? What are the uses of views?

·     About asp.net and new features?

·    Page Life Cycle

·    State management & Session Management

·    User Controls & Master Pages

·    What are the Caching techniques in Asp.net???

·     MVC life cycle. How MVC send request and respond? 

WCF

• What are the diff varieties of WCF and authentication of WCF?
• What are the different bindings in WCF ?·         

Database

• When do we use stored procedures and when do we use functions? 
•             How we do performance optimization of a Query? 
•  Indexes, CTE,
• Different relationships 

Design patterns

• What is dependency injection and interface injection? - Design Patterns
• What is factory pattern, where you have implemented in your project ??- Design       patterns
• What are the different design patterns you have used and explain the same with an example?